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Culligan Water Filters
Culligan is the US water-softener, whole-house, and RO brand (founded 1936), owned by BDT & MSD Partners since 2016. Its certification evidence is split across several listing entities (NSF/ANSI 55 UV, ZeroWater, WQA).
Best for
- Hard-water homes wanting salt-based softening with professional dealer install — the HE Series and Aquasential Smart HE
- Homes on chlorinated city water wanting the Aquasential Smart setup — Smart RO, with NSF/ANSI 58-listed TDS, fluoride, and lead
- Well-water homes needing point-of-use UV disinfection — the CUV5-, CUV6-, CUVH5-, and CUVH6- NSF/ANSI 55 Class B sterilizers
- Buyers wanting a brand with ~90 years of history and BDT & MSD Partners' long-hold ownership — a stable ~10-year ownership era
Not recommended for
- Budget buyers wanting under-$500 whole-house or under-sink treatment — dealer install prices above Amazon-direct DIY options
- Buyers searching 'NSF certified' for 'Culligan' on info.nsf.org — that returns only the NSF/ANSI 55 UV slice of the wider footprint
- DIY-first buyers wanting to buy and self-install via Amazon — the flagship softener and RO lines are built for dealer install
- Buyers wanting certified lead, cyst, or VOC on the whole-house housings (WH-S200-C / WH-HD200-C) — those hold only 42; use the Smart RO
- Certs:NSF/ANSI 42, 44, 53, 55, 58, 61, 177, NSF P231, 372, 401
- 5 SKUs
- $25–$2500
- Parent:BDT & MSD Partners (Chicago merchant-banking firm), acquired May 2016
Certification Reality: What's Actually Tested
This table shows the NSF/IAPMO/WQA-listed certifications for each Culligan SKU we tracked, alongside the contaminants the brand markets but which do not appear on the third-party listing. Green chips are third-party verified; amber chips are marketing claims without a corresponding listing. Every row links to the live certifier database so you can verify the listed claim set yourself.
| SKU / Model | Standards held | What’s certified | Brand claims but NOT certified | Listing |
|---|---|---|---|---|
Culligan HE Series Softener Culligan HE Series Single-Tank Water Softener — the brand's flagship dealer-installed residential softener | Performance NSF/ANSI 42 NSF/ANSI 44 Material & component safety NSF/ANSI 372 NSF/ANSI 61 |
|
Why these aren’t certified ↓Hide details ↑
| View WQA listing |
Culligan Aquasential Smart HE Twin Softener Culligan Aquasential Smart HE Twin — premium two-tank smart softener with Culligan Connect remote monitoring | Performance NSF/ANSI 44 Material & component safety NSF/ANSI 372 |
|
Why these aren’t certified ↓Hide details ↑
| View WQA listing |
Culligan Aquasential Smart RO Culligan Aquasential Smart RO — premium under-sink reverse-osmosis with Culligan Connect remote monitoring | Performance NSF/ANSI 401 NSF/ANSI 42 NSF/ANSI 53 NSF/ANSI 58 Material & component safety NSF P231 NSF/ANSI 372 |
|
Why these aren’t certified ↓Hide details ↑
| View manufacturer page |
Culligan IC-EZ-4 Culligan IC-EZ-4 Inline Drinking-Water Filter Cartridge — the canonical post-IC-EZ-3 generation | No active certifications | No third-party listing for this SKU in our certification data |
Why these aren’t certified ↓Hide details ↑
| View manufacturer page |
Culligan CUV6-02XA UV Sterilizer Culligan CUV6-02XA NSF/ANSI 55 Class B UV Microbiological Water Treatment System — a representative residential UV sterilizer (1 of 33 listed SKUs) | Performance NSF/ANSI 55 |
|
Why these aren’t certified ↓Hide details ↑
| View NSF listing |
Culligan HE Series Softener
Culligan HE Series Single-Tank Water Softener — the brand's flagship dealer-installed residential softener
Standards held
Performance
Material & component safety
What’s certified
- Barium
- Hardness
- Radium 226/228
- Iron
- Aesthetic Chlorine
- Taste and Odor
Brand claims but NOT certified
- Chlorine / Chloramine reduction
- Lead / Mercury / PFAS / Pharmaceuticals
- Bacteria / Virus / Protozoa
Why these aren’t certified ↓Hide details ↑
- Chlorine / Chloramine reduction — a softener removes hardness minerals by ion exchange, not chlorine by carbon, so whole-house chlorine reduction needs the separate Aquasential Smart HE Whole-House carbon filter or pre-filtration through the WH-S200-C cartridge housing
- Lead / Mercury / PFAS / Pharmaceuticals — NSF/ANSI 53 / 401 territory, outside the NSF/ANSI 44 softener scope; the Aquasential Smart RO is the Culligan product for those, not the HE Series softener
- Bacteria / Virus / Protozoa — NSF/ANSI 55 UV-disinfection territory, outside the NSF/ANSI 44 softener scope; the CUV5- / CUV6- UV sterilizers handle those, not the HE Series softener
The Culligan HE Series is the brand's standard residential softener. NSF/ANSI 44 is the standard for cation-exchange softeners: hardness reduction, plus any other reduction claim the listing names. Most of Culligan's WQA listings under it name barium and radium 226/228 reduction as well as hardness; none names chlorine, lead, PFAS, or microbial reduction. The honest way to read its certification is to separate that softener scope from the broader contaminant-reduction message consumers may read into the parent 'Culligan Water' brand.
The HE Series is WQA Gold Seal certified under NSF/ANSI 44 for hardness, barium and radium 226/228 reduction — equivalent to an NSF International or IAPMO R&T listing under the same standard, just indexed in the WQA find.wqa.org directory rather than NSF's certification database. For lead, PFAS, pharmaceutical, or chlorine reduction in the home, the right Culligan product is the under-sink Aquasential Smart RO; for bacteria, virus, or protozoa reduction on well water, it is the CUV5- / CUV6- UV sterilizer family.
The confusion comes from reading one product's certification across the whole brand: the softener handles hardness, the RO handles chemical contaminants, and the UV handles microbiological. Treating it all as a single 'Culligan is NSF certified' claim hides the per-product certification scope that is built into how water-treatment equipment works.
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Listing
View WQA listingCulligan Aquasential Smart HE Twin Softener
Culligan Aquasential Smart HE Twin — premium two-tank smart softener with Culligan Connect remote monitoring
Standards held
Performance
Material & component safety
What’s certified
- Barium
- Hardness
- Radium 226/228
Brand claims but NOT certified
- Smart-connectivity remote monitoring
- Chlorine / Lead / PFAS / Microbiological…
Why these aren’t certified ↓Hide details ↑
- Smart-connectivity remote monitoring — the Culligan Connect app (salt-level alerts, regeneration tracking, water-use reporting, automated service calls) is a feature on top of the NSF/ANSI 44 softener certification, not a separately certified performance claim
- Chlorine / Lead / PFAS / Microbiological reduction — same gaps as the base HE Series, since the twin shares the same softener design and certification scope (hardness, barium and radium 226/228 reduction, not chlorine, lead, PFAS, or microbiological reduction)
The Aquasential Smart HE Twin's certification is identical to the base HE Series single-tank softener — the same NSF/ANSI 44 WQA Gold Seal scope (hardness, barium and radium 226/228 reduction, per the WQA listing). What sets it apart is the twin-tank design (24/7 soft water versus the single tank's overnight-regeneration gap) plus the Culligan Connect app. Both are features, not added certifications.
The same per-product caveat applies: the softener is NSF/ANSI 44 certified for hardness, barium and radium 226/228 reduction, not for chlorine, lead, PFAS, pharmaceutical, or microbiological reduction. Both the base HE Series and the Aquasential Smart HE Twin are listed under the same WQA Gold Seal entity (Culligan-corporate), so the parent-company complexity is mild here.
The 'Aquasential Smart' name spans several products (the Smart RO and the wider whole-house line too), which can read as 'all Aquasential Smart products share one certification.' In reality each one is certified to its own category: softener to NSF/ANSI 44; under-sink RO to NSF/ANSI 42 + 53 + 58 + 401; whole-house carbon to NSF/ANSI 42.
Read more
Listing
View WQA listingCulligan Aquasential Smart RO
Culligan Aquasential Smart RO — premium under-sink reverse-osmosis with Culligan Connect remote monitoring
Standards held
Performance
Material & component safety
What’s certified
- Aesthetic Chlorine
- Taste and Odor
- Cyst
- Lead
- Mercury
- Methyl Tert-Butyl Ether (MTBE)
- Total PFAS
- Turbidity
- VOC (as chloroform)
- Arsenic (V) (50 ppb influent level)
- Barium
- Cadmium
- Copper
- Fluoride
- Hexavalent Chromium
- Radium 226/228
- Selenium
- TDS
- Trivalent Chromium
- Bacteria
- Virus
- Atenolol
- Bisphenol A
- Carbamazepine
- DEET
- Estrone
- Ibuprofen
- Linuron
- Meprobamate
- Metolachlor
- Microplastics
- Naproxen
- Nonyl Phenol
- Phenytoin
- TCEP
- TCPP
- Trimethoprim
Brand claims but NOT certified
- PFOA and PFOS as separately named claims
- Bacteria / Virus / Protozoa
- Smart-connectivity remote monitoring
Why these aren’t certified ↓Hide details ↑
- PFOA and PFOS as separately named claims — WQA's NSF/ANSI 53 listing for the Aquasential Smart RO names Total PFAS (alongside lead, mercury, MTBE, VOCs, cyst and turbidity) rather than PFOA and PFOS individually; the ZEROFXX co-branded pitcher filter (IAPMO listings under Zero Technologies, LLC) is the Culligan-range product listed for PFOA / PFOS by name
- Bacteria / Virus / Protozoa — NSF/ANSI 55 UV-disinfection territory; the Smart RO covers chemical contaminants via NSF/ANSI 42 + 53 + 58 + 401 but not microbiological disinfection, which the CUV5- / CUV6- UV sterilizer family handles
- Smart-connectivity remote monitoring — the Culligan Connect app (filter-life tracking, replacement reminders, water-use reporting) is a feature on top of the certification, not a separately certified performance claim
The Culligan Aquasential Smart RO is the brand's flagship under-sink drinking-water filter for certification — a broad WQA Gold Seal scope across NSF/ANSI 42 + 53 + 58 + 401 at the under-sink form factor. That evidence is equivalent to an NSF International or IAPMO R&T listing under the same standards, just indexed in the WQA find.wqa.org directory rather than NSF's certification database at info.nsf.org.
This is where the different-certifier point matters: anyone searching NSF's certification database for 'Culligan' sees only the NSF/ANSI 55 UV slice and misses the WQA Gold Seal footprint on the softener, RO, and whole-house lines. The honest framing is simple — the Aquasential Smart RO is genuinely NSF/ANSI 42 + 53 + 58 + 401 certified via WQA Gold Seal. The broad 'Culligan is NSF certified' message rolls this per-product evidence into one claim that hides which certifier and which standard apply to which product.
For certified PFAS reduction, the Aquasential Smart RO itself qualifies: its WQA NSF/ANSI 53 listing names Total PFAS. The ZEROFXX co-branded pitcher filter (listed in IAPMO's certification database under Zero Technologies, LLC) is the Culligan-range product listed for PFOA and PFOS by name. The split evidence is a direct result of the post-2016 acquisitions — it sits under several listing entities (Culligan International for UV, Zero Technologies, LLC for the ZEROFXX pitcher cartridge, and separate Culligan entities for the softener, RO, and whole-house lines at WQA Gold Seal).
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Listing
View manufacturer pageCulligan IC-EZ-4
Culligan IC-EZ-4 Inline Drinking-Water Filter Cartridge — the canonical post-IC-EZ-3 generation
Standards held
No active certifications
What’s certified
No third-party listing for this SKU in our certification data
Brand claims but NOT certified
- PFAS / PFOA / PFOS
- Fluoride
- Cross-generation compatibility with the…
Why these aren’t certified ↓Hide details ↑
- PFAS / PFOA / PFOS — no listing we hold for the IC-EZ-4 inline filter names PFOA, PFOS or Total PFAS (those claims are listed under NSF/ANSI 53 or 58; NSF/ANSI 401 does not cover PFAS); in the Culligan range, the Aquasential Smart RO (WQA, Total PFAS under NSF/ANSI 53) and the ZEROFXX co-branded pitcher filter (IAPMO listings under Zero Technologies, LLC, PFOA / PFOS) carry certified PFAS claims
- Fluoride — NSF/ANSI 58 RO-membrane territory; the IC-EZ-4 cartridge has no RO membrane stage, so fluoride reduction in the Culligan range needs the under-sink Aquasential Smart RO
- Cross-generation compatibility with the EZ-Change series — the IC-EZ-4 head fits the IC-EZ-1 and IC-EZ-3 bodies, but EZ-Change is a separate cartridge design that may not fully fit the IC-EZ-4 housing; check the generation and housing key carefully against the brand's product pages before replacing an existing inline filter
The Culligan IC-EZ-4 inline filter cartridge is the standard post-IC-EZ-3 generation in the inline drinking-water family. Its WQA Gold Seal certification covers NSF/ANSI 42 + 53 (chlorine, taste-and-odor, lead, cyst, VOC) at the inline-cartridge form factor — equivalent to an NSF International or IAPMO R&T listing under the same standards, just indexed in the WQA find.wqa.org directory rather than NSF's certification database.
Replacement is the tricky part on this line. The IC-EZ-4 head fits the IC-EZ-1 and IC-EZ-3 bodies (partial backward compatibility), but the cartridges are keyed to specific generations, and the EZ-Change series (the next generation in some retail channels) adds more compatibility complexity. If you are replacing an existing Culligan inline filter, check the generation and housing key carefully against the brand's product pages and support docs.
A related mix-up: the Culligan + ZeroWater ZEROFXX co-branded pitcher filter (from the 2020 ZeroWater acquisition) is a separate cartridge that fits the US-EZ-4 pitcher system but not the IC-EZ inline housings. Confusing the IC-EZ inline family with the US-EZ-4 pitcher system is a common buyer error that the brand's product pages flag.
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Listing
View manufacturer pageCulligan CUV6-02XA UV Sterilizer
Culligan CUV6-02XA NSF/ANSI 55 Class B UV Microbiological Water Treatment System — a representative residential UV sterilizer (1 of 33 listed SKUs)
Standards held
Performance
What’s certified
- Disinfection Performance, Class A
Brand claims but NOT certified
- Chlorine / Chloramine
- Lead / Mercury / VOC / PFAS / Pharmaceut…
- TDS / Fluoride / Arsenic
- Hardness minerals
- Sediment / Turbidity
Why these aren’t certified ↓Hide details ↑
- Chlorine / Chloramine — NSF/ANSI 42 carbon-stage territory; a UV sterilizer is not a carbon filter and does not reduce chlorine, so the standard well-water setup pre-filters chlorine through the WH-S200-C cartridge housing ahead of the UV stage
- Lead / Mercury / VOC / PFAS / Pharmaceuticals — NSF/ANSI 53 / 401 chemical-contaminant territory; UV disinfection is microbiological only
- TDS / Fluoride / Arsenic — NSF/ANSI 58 RO-membrane territory
- Hardness minerals — NSF/ANSI 44 softener territory; the HE Series softener is the Culligan product for hardness
- Sediment / Turbidity — the UV sterilizer needs sediment pre-filtration to keep working, so turbidity is handled at the cartridge-housing stage, not the UV stage
The Culligan CUV6-02XA is one of 33 SKUs in the brand's NSF/ANSI 55 Class B UV sterilizer family (all 33 records sit in the local NSF data under 'Culligan International'). Class B (residential and light-commercial bacteria, virus, and protozoa disinfection at the standard's threshold) is the usual residential UV-disinfection tier — distinct from the higher Class A, which is public-health UV protection for systems serving water of unknown or contaminated microbiological quality.
Most consumer UV systems target Class A rather than Class B residential disinfection; Culligan's CUV5- and CUV6- models are the go-to Class B residential well-water UV systems for households that do not need Class A protection. The certification covers microbiological disinfection only — UV does not reduce chlorine (carbon-stage territory), chemical contaminants (NSF/ANSI 53 / 401 / 58 territory), or hardness (NSF/ANSI 44 territory). It also needs sediment pre-filtration (typically the WH-S200-C or equivalent) to keep working at the system flow rate.
The confusion comes from reading the UV disinfection claim across the whole 'Culligan Water' brand — UV handles microbiological contamination, not chemical or hardness reduction.
Read more
Listing
View NSF listingCheck Certification for a Culligan Filter
This widget shows the third-party-listed certifications for Culligan SKUs only. Type a model number to filter the list below — every result links to the full breakdown. To search across every brand we track, use the global certification tool. For the standards Culligan holds and the certifier behind each listing in one place, see Is Culligan NSF certified?
- View details
CUV5-02XB
Culligan International Company
NSF/ANSI 55 - View details
CUV5-03XB
Culligan International Company
NSF/ANSI 55 - View details
CUV5-06XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-02A-12V
Culligan International Company
NSF/ANSI 55 - View details
CUV6-02XA
Culligan International Company
NSF/ANSI 55 - View details
CUV6-02XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-03A-12V
Culligan International Company
NSF/ANSI 55 - View details
CUV6-03XA
Culligan International Company
NSF/ANSI 55 - View details
CUV6-03XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-06A-12V
Culligan International Company
NSF/ANSI 55 - View details
CUV6-06XA
Culligan International Company
NSF/ANSI 55 - View details
CUV6-06XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-10XA
Culligan International Company
NSF/ANSI 55 - View details
CUVH5-05XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-05XA
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-05XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-10XA
Culligan International Company
NSF/ANSI 55 - View details
CUV5-10XB
Culligan International Company
NSF/ANSI 55 - View details
CUV5-15XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-10XB
Culligan International Company
NSF/ANSI 55 - View details
CUV6-15XA
Culligan International Company
NSF/ANSI 55 - View details
CUV6-15XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH5-10XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH5-15XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH5-25XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH5-40XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-10XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-15XA
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-15XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-25XA
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-25XB
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-40XA
Culligan International Company
NSF/ANSI 55 - View details
CUVH6-40XB
Culligan International Company
NSF/ANSI 55 - View details
Cull-AsX53
Culligan International
NSF/ANSI 61 - View details
PG8FEBF
Culligan International Company
NSF/ANSI 61 - View details
PG8FEBFSL
Culligan International Company
NSF/ANSI 61 - View details
PWFEBF
Culligan International Company
NSF/ANSI 61 - View details
W-9332
CULLIGAN INTERNATIONAL
NSF/ANSI 42 - View details
WP-10825
CULLIGAN INTERNATIONAL
NSF/ANSI 42 - View details
W-9334
CULLIGAN INTERNATIONAL
NSF/ANSI 53 - View details
WP-10826
CULLIGAN INTERNATIONAL
NSF/ANSI 53 - View details
W-9335
CULLIGAN INTERNATIONAL
NSF/ANSI 58 - View details
WP-13344
CULLIGAN INTERNATIONAL
NSF/ANSI 58 - View details
W-9404
CULLIGAN INTERNATIONAL
NSF/ANSI 61 - View details
WP-14724
CULLIGAN INTERNATIONAL
NSF/ANSI 61 - View details
W-9336
CULLIGAN INTERNATIONAL
NSF/ANSI 372 - View details
WP-11101
CULLIGAN INTERNATIONAL
NSF/ANSI 372 - View details
W-11659
CULLIGAN INTERNATIONAL
NSF/ANSI 177 - View details
WP-12222
CULLIGAN INTERNATIONAL
NSF/ANSI 177 - View details
W-12300
CULLIGAN INTERNATIONAL
NSF/ANSI 401 - View details
WP-11635
CULLIGAN INTERNATIONAL
NSF/ANSI 401 - View details
CFM-300CR
Culligan International
NSF/ANSI 42, 53, 372 - View details
CFM-300WH
Culligan International
NSF/ANSI 42, 53, 372 - View details
CP5-BBS
Culligan International
NSF/ANSI 42, 372 - View details
CW25-BBS
Culligan International
NSF/ANSI 42, 372 - View details
CW5-BBS
Culligan International
NSF/ANSI 42, 372 - View details
CW-F
Culligan International
NSF/ANSI 42, 372 - View details
CW-MF
Culligan International
NSF/ANSI 42, 372 - View details
IC-100A
Culligan International
NSF/ANSI 42, 372 - View details
MS004489
Culligan International
NSF/ANSI 42, 372 - View details
MS004490
Culligan International
NSF/ANSI 42, 372 - View details
MS004499
Culligan International
NSF/ANSI 42, 372 - View details
MS004512
Culligan International
NSF/ANSI 42, 372 - View details
MS004513
Culligan International
NSF/ANSI 42, 372 - View details
MS403224
Culligan International
NSF/ANSI 42, 372 - View details
MS403227
Culligan International
NSF/ANSI 42, 372 - View details
MS403900
Culligan International
NSF/ANSI 42, 372 - View details
MS403907
Culligan International
NSF/ANSI 42, 372 - View details
MS404419
Culligan International
NSF/ANSI 42, 372 - View details
MS404434
Culligan International
NSF/ANSI 42, 372 - View details
MS404446
Culligan International
NSF/ANSI 42, 372 - View details
P1
Culligan International
NSF/ANSI 42, 372 - View details
P25-BBSA
Culligan International
NSF/ANSI 42, 372 - View details
P5
Culligan International
NSF/ANSI 42, 372 - View details
PIT-1
Culligan International
NSF/ANSI 42, 53, 372 - View details
R50-BBSA
Culligan International
NSF/ANSI 42, 372 - View details
RFC-BBSA
Culligan International
NSF/ANSI 42, 372 - View details
S-1A
Culligan International
NSF/ANSI 42, 372 - View details
SCWH-5
Culligan International
NSF/ANSI 42, 372 - View details
WH-HD200-C
Culligan International
NSF/ANSI 42, 372 - View details
RO
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
RO (2 yr)
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
Smart RO
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
Smart RO (2 yr)
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
Smart RO (2yr) Nitrate
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
Smart RO Nitrate
Aquasential
NSF/ANSI 42, 53, 58, 372, NSF P231, 401 - View details
10" Cullar Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
10" Cullar Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
10" Filtr Cleer Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
10" Filtr Cleer Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
9" Cullar Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
9" Cullar Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
9" Filtr Cleer Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
9" Filtr Cleer Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
Iron-OX5 Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
Iron-OX5 Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
Sulfur-OX3 Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
Sulfur-OX3 Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer Filter
Aquasential Select
NSF/ANSI 42, 372 - View details
8" Filtr-Cleer Filter
Aquasential Select
NSF/ANSI 42, 372 - View details
10" Cullar Filter
Aquasential Select
NSF/ANSI 42, 372 - View details
8" Cullar Filter
Aquasential Select
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer Filter
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
10" Iron-Cleer
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
10” Cullar Filter
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
Iron-OX5
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
Iron-OX5 Outdoor
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
12" Iron-Cleer
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
Sulfur-OX3
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
Sulfur-OX3 Outdoor
Aquasential Select Plus
NSF/ANSI 42, 372 - View details
10" Softener-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
10" Softener-Cleer Plus
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
12" Softener-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
12" Softener-Cleer Plus
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
14" Softener-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
14" Softener-Cleer Plus
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
9" Cullar Filter
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
9" Softener-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
9" Softener-Cleer Plus
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
9" Softener-Cleer Plus Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 12"
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 12" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 14"
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 14" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 44, 372 - View details
Nitrate Reduction 12" Water Conditioner
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
Nitrate Reduction 14" Water Conditioner
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
Nitrate Reduction 9" Water Conditioner
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
10" Cullar Filter
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
10" Cullar Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
10" Iron-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
12" Iron-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
9" Cullar Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
9" Filtr-Cleer
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
9" Filtr-Cleer Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
Sulfur-Cleer 10" Fiberglass
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
Sulfur-Cleer 10" Quadra Hull
Aquasential Smart High Efficiency
NSF/ANSI 42, 372 - View details
Aquasential ClearLink Pro
ClearLink
NSF/ANSI 42, 58, 372 - View details
ClearLink Pro
ClearLink
NSF/ANSI 42, 58, 372 - View details
CULFMCH
Culligan
NSF/ANSI 42, 53, 372, 401 - View details
CULFMWH
Culligan
NSF/ANSI 42, 53, 372, 401 - View details
HD-950A
Culligan
NSF/ANSI 42, 372 - View details
HF-150A
Culligan
NSF/ANSI 42, 372 - View details
10" Cullar Filter Outdoor
High Efficiency
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer Filter
High Efficiency
NSF/ANSI 42, 372 - View details
10" Filtr-Cleer Filter Outdoor
High Efficiency
NSF/ANSI 42, 372 - View details
10" Softener-Cleer
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
10" Softener-Cleer Plus
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
10” Cullar Filter
High Efficiency
NSF/ANSI 42 - View details
12" Softener-Cleer
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
12" Softener-Cleer Plus
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
14" Softener-Cleer
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
14" Softener-Cleer Plus
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
9" Cullar Filter
High Efficiency
NSF/ANSI 42, 372 - View details
9" Cullar Filter Outdoor
High Efficiency
NSF/ANSI 42, 372 - View details
9" Filtr-Cleer Filter
High Efficiency
NSF/ANSI 42, 372 - View details
9" Softener-Cleer
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
9" Softener-Cleer Plus
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
9" Softener-Cleer Plus Outdoor
High Efficiency
NSF/ANSI 42, 44, 61, 372 - View details
9” Cullar Filter
High Efficiency
NSF/ANSI 42 - View details
Municipal 12"
High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 12" Outdoor
High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 14"
High Efficiency
NSF/ANSI 42, 44, 372 - View details
Municipal 14" Outdoor
High Efficiency
NSF/ANSI 42, 44, 372 - View details
9" Filtr-Cleer Filter Outdoor
High Efficiency
NSF/ANSI 42, 372 - View details
Strainer, In-line 125
N/A
NSF/ANSI 42, 58, 372 - View details
10" Fiberglass
Sulfur-Cleer
NSF/ANSI 42, 372 - View details
10" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
10" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
10" S Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
12" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
12" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
8" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
8" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
9" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
9" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
Municipal 10" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
Municipal 10" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
Municipal 9" Indoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
Municipal 9" Outdoor
Aquasential Advantage Whole House Water Softener
NSF/ANSI 44, 372 - View details
HE-1.25-10
Aquasential High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-12
Aquasential High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-14
Aquasential High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-16
Aquasential High Efficiency
NSF/ANSI 44, 372 - View details
8"
Aquasential Select
NSF/ANSI 44, 372 - View details
8" Outdoor
Aquasential Select
NSF/ANSI 44, 372 - View details
9" S
Aquasential Select
NSF/ANSI 44, 372 - View details
10"
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
10" Outdoor
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
10" S
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
12"
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
12" Outdoor
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
9"
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
9" Outdoor
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
CleanWater Home 10"
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
CleanWater Home 10" Outdoor
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
CleanWater Home 9"
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
CleanWater Home 9" Outdoor
Aquasential Select Plus
NSF/ANSI 44, 372 - View details
10"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
10" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
12"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
12" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
14"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
14" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
9"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
9" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-10
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-12
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-14
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
HE-1.25-16
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 10"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 10" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 9"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 9" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 10"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 10" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44 - View details
Twin 12"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 12" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 14"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 14" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 9"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin 9" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin Upflow 10"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Twin Upflow 9"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 10"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 10" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 9"
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 9" Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 44, 372 - View details
10"
High Efficiency
NSF/ANSI 44, 372 - View details
10" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
12"
High Efficiency
NSF/ANSI 44, 372 - View details
12" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
14"
High Efficiency
NSF/ANSI 44, 372 - View details
14" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
9"
High Efficiency
NSF/ANSI 44, 372 - View details
9" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 10"
High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 10" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 9"
High Efficiency
NSF/ANSI 44, 372 - View details
Municipal 9" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Twin 10"
High Efficiency
NSF/ANSI 44, 372 - View details
Twin 10” Outdoor
High Efficiency
NSF/ANSI 44 - View details
Twin 12"
High Efficiency
NSF/ANSI 44, 372 - View details
Twin 12” Outdoor
High Efficiency
NSF/ANSI 44 - View details
Twin 14"
High Efficiency
NSF/ANSI 44, 372 - View details
Twin 14” Outdoor
High Efficiency
NSF/ANSI 44 - View details
Twin 9"
High Efficiency
NSF/ANSI 44, 372 - View details
Twin 9" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Twin Upflow 10"
High Efficiency
NSF/ANSI 44, 372 - View details
Twin Upflow 9"
High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 10"
High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 10" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 9"
High Efficiency
NSF/ANSI 44, 372 - View details
Upflow 9" Outdoor
High Efficiency
NSF/ANSI 44, 372 - View details
Fiberglass Indoor
Aquasential Whole Home PFAS Water Filter
NSF/ANSI 53, 372 - View details
Fiberglass Indoor, French
Aquasential Whole Home PFAS Water Filter
NSF/ANSI 53, 372 - View details
Quadra-Hull Indoor
Aquasential Whole Home PFAS Water Filter
NSF/ANSI 53, 372 - View details
Quadra-Hull Outdoor
Aquasential Whole Home PFAS Water Filter
NSF/ANSI 53, 372 - View details
Fiberglass Outdoor
Aquasential Whole Home PFAS Water Fitler
NSF/ANSI 53 - View details
Quadra-Hull Indoor, French
Aqusential Whole Home PFAS Water Filter
NSF/ANSI 53 - View details
Tankless RO
Aquasential
NSF/ANSI 58, 372 - View details
Tankless RO with Mineral Boost+
Aquasential
NSF/ANSI 58, 372 - View details
AC-30
Good Water Machine
NSF/ANSI 58, 372 - View details
AC-30 Plus
Good Water Machine
NSF/ANSI 58, 372 - View details
AC-30L
Good Water Machine
NSF/ANSI 58, 372 - View details
AC-30L Plus
Good Water Machine
NSF/ANSI 58, 372 - View details
AC-30M
Good Water Machine
NSF/ANSI 58, 372 - View details
AC-30M Plus
Good Water Machine
NSF/ANSI 58, 372 - View details
2" CSM valve assembly
Culligan International
NSF/ANSI 61, 372 - View details
3" CSM valve assembly
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE 1.25" Softener, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Filter, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Softener, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Softener, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Softener, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Softener, Upflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Twin Softener, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Twin Softener, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential HE Twin Softener, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Plus Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Plus Softener
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Plus Softener, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Softener
Culligan International
NSF/ANSI 61, 372 - View details
Control, Aquasential Select Softener, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1", Progressive Flow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Filter, Progressive Flow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Softener, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Softener, Progressive Flow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Softener, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1.5" Twin #2, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE 1-1/4", DF
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Softener, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Softener, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Softener, Upflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Twin #2 Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Twin #2, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, HE Twin #2, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE 1.25", Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Filter, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Iron Cleer Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Softener, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Softener, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Softener, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Softener, Upflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Sulfur Cleer Filter
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #1, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #1, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #1, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #2, Downflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #2, Downflow, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Smart HE Twin #2, Upflow
Culligan International
NSF/ANSI 61, 372 - View details
Control, Softener, Advantage, Indoor
Culligan International
NSF/ANSI 61, 372 - View details
Control, Softener, Advantage, Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Control,Filter,Advantage,Indoor
Culligan International
NSF/ANSI 61, 372 - View details
Control,Filter,Advantage,Outdoor
Culligan International
NSF/ANSI 61, 372 - View details
Stainless Steel Flow Meter, 1.5” NPT w/Cable (Culligan Design)
Culligan International
NSF/ANSI 61, 372 - View details
Stainless Steel Flow Meter, 2” NPT w/Cable (Culligan Design)
Culligan International
NSF/ANSI 61, 372 - View details
Stainless Steel Flow Meter, 3” NPT w/Cable (Culligan Design)
Culligan International
NSF/ANSI 61, 372 - View details
WH-S100-O
Culligan International
NSF/ANSI 61, 372 - View details
WH-S200-C
Culligan International
NSF/ANSI 61, 372 - View details
10" Cullneu Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" Cullneu Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" No Media Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" No Media Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" No Media w/P Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" No Media w/P Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
9" No Media Indoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
9" No Media Outdoor
Aquasential Advantage Whole House Water Filter
NSF/ANSI 61, 372 - View details
10" Cullneu Filter
Aquasential Select
NSF/ANSI 61, 372 - View details
8" Cullneu Filter
Aquasential Select
NSF/ANSI 61, 372 - View details
10" Filter Empty
Aquasential Select
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP
Aquasential Select
NSF/ANSI 61, 372 - View details
8" Filter Empty
Aquasential Select
NSF/ANSI 61, 372 - View details
10" Cullneu Filter
Aquasential Select Plus
NSF/ANSI 61, 372 - View details
10" Filter Empty
Aquasential Select Plus
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP
Aquasential Select Plus
NSF/ANSI 61, 372 - View details
9" Filter Empty
Aquasential Select Plus
NSF/ANSI 61, 372 - View details
10" Cullneu
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Softener Empty Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Cullneu
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Cullneu Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Cullneu Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty w/FP
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty w/FP Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 61, 372 - View details
HF-360B
Culligan
NSF/ANSI 61, 372 - View details
CTM 2.0 21" Carbon Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 21" Depth Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 24" Carbon Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 24" Depth Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 30" Carbon Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 30" Depth Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 36" Carbon Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 36" Depth Filter Non-Ported
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 120K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 150K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 210K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 300K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 450K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 600K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 60K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Non-Ported 90K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 120K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 150K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 210K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 300K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 450K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 600K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 60K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow HWB Ported 90K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 120K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 150K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 210K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 300K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 450K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 600K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 60K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Non-Ported 90K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 120K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 150K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 210K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 300K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 450K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 600K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 60K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 Downflow NHWB Ported 90K Capacity Softener
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 HWB Valve
Culligan Top Mount
NSF/ANSI 61, 372 - View details
CTM 2.0 NHWB Valve
Culligan Top Mount
NSF/ANSI 61, 372 - View details
10" Cullneu Filter
High Efficiency
NSF/ANSI 61, 372 - View details
10" Cullneu Filter Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty
High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP
High Efficiency
NSF/ANSI 61, 372 - View details
10" Filter Empty w/FP Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
10" Softener Empty Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
9" Cullneu Filter
High Efficiency
NSF/ANSI 61, 372 - View details
9" Cullneu Filter Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty
High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty w/FP
High Efficiency
NSF/ANSI 61, 372 - View details
9" Filter Empty w/FP Outdoor
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1 - 45PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-12 Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-12PF Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-14 Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-14PF Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-16 Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-16PF Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-21 Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 CF-21PF Carbon Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-12 Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-12PF Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-14 Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-14PF Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-16 Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-16PF Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-21 Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5 DF-21PF Depth Filter
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-120 PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-120 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-120 UF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-150 PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-150 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-150 UF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-210 PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-210 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-210 UF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-60 PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-60 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-60 UF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-90 PF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-90 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE 1.5-90 UF Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE Twin 1.5-120 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE Twin 1.5-150 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE Twin 1.5-210 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE Twin 1.5-60 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
HE Twin 1.5-90 Softener
High Efficiency
NSF/ANSI 61, 372 - View details
LCRO-200AC
Light Commercial Reverse Osmosis, Aqua-Cleer Series
NSF/ANSI 61, 372 - View details
LCRO-100AC
Light Commercial Reverse Osmosis,Aqua-Cleer Series
NSF/ANSI 61, 372 - View details
LCRO-150AC
Light Commercial Reverse Osmosis,Aqua-Cleer Series
NSF/ANSI 61, 372 - View details
D-15
Culligan International
NSF/ANSI 372 - View details
In & Out Assembly, 2 Port
Culligan International
NSF/ANSI 372 - View details
RVF-10
Culligan International
NSF/ANSI 372 - View details
Fiberglass Outdoor
Aquasenital Whole Home PFAS Water Filter
NSF/ANSI 372 - View details
Downflow-Fiberglass 10x54" Centaur, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 10x54" Cullar D+, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 10x54" Cullar D+, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 10x54" Cullar S, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 10x54" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 12x52" Centaur, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 12x52" Cullar D+, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 12x52" Cullar S, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 12x52" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 8x44" Cullar D+, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 8x44" Cullar S, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 8x44" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 9x48" Centaur, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 9x48" Cullar D+, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 9x48" Cullar D+, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 9x48" Cullar S, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Fiberglass 9x48" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 10x54" Centaur, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 10x54" Cullar D+, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 10x54" Cullar D+, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 10x54" Cullar S, 2 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 10x54" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 12x52" Centaur, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 12x52" Cullar D+, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 12x52" Cullar S, 2.75 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 12x52" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 14x65" Centaur, 5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 14x65" Cullar D+, 4.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 14x65" Cullar S, 4.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 14x65" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 16x65" Centaur, 6 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 16x65" Cullar D+, 6 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 16x65" Cullar S, 6 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 16x65" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 9x48" Centaur, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 9x48" Cullar D+, 1 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 9x48" Cullar D+, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 9x48" Cullar S, 1.5 CF
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Downflow-Quadra-Hull 9x48" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 10x54" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 10x54"-Cullneu, 100 lbs
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 8x44" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 8x44"-Cullneu, 50 lbs
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 9x48" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Fiberglass 9x48"-Cullneu, 75 lbs
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Quadra-Hull 10x54" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Quadra-Hull 10x54"-Cullneu, 100 lbs
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Quadra-Hull 9x48" Empty
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
Upflow-Quadra-Hull 9x48"-Cullneu, 75 lbs
Aquasential Non-Backwashing System
NSF/ANSI 372 - View details
14x65", Light Commercial
Aquasential Salt Free Conditioner
NSF/ANSI 372 - View details
9x16", Condo Unit
Aquasential Salt Free Conditioner
NSF/ANSI 372 - View details
9x16", Standard Home
Aquasential Salt Free Conditioner
NSF/ANSI 372 - View details
9x36", Large Home
Aquasential Salt Free Conditioner
NSF/ANSI 372 - View details
9x42" Twin, Premium Home
Aquasential Salt Free Conditioner
NSF/ANSI 372 - View details
Twin 10” Outdoor
Aquasential Smart High Efficiency
NSF/ANSI 372 - View details
Quadra-Hull Indoor, French
Aquasential Whole Home PFAS Water Filter
NSF/ANSI 372 - View details
CTM 2.0 21” Carbon Filter Code Non-Ported
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 24” Carbon Filter Code Non-Ported
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 30” Carbon Filter Code Non-Ported
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 36” Carbon Filter Code Non-Ported
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow HWB Code Ported 150K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow HWB Code Ported 210K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow HWB Code Ported 300K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow HWB Code Ported 450K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow HWB Code Ported 600K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow NHWB Code Non-Ported 150K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow NHWB Code Non-Ported 210K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow NHWB Code Non-Ported 300K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow NHWB Code Non-Ported 450K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0 Downflow NHWB Code Non-Ported 600K Capacity Softener
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0-GF 21” Greensand Filter NHWB
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0-GF 24” Greensand Filter NHWB
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0-GF 30” Greensand Filter NHWB
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
CTM 2.0-GF 36” Greensand Filter NHWB
Culligan Top Mount (CTM)
NSF/ANSI 372 - View details
10" Cullar Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-12 Greensand Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-12 Greensand Progressive Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-14 Greensand Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-14 Greensand Progressive Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-16 Greensand Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-16 Greensand Progressive Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-21 Greensand Filter
High Efficiency
NSF/ANSI 372 - View details
HE 1.5 GF-21 Greensand Progressive Filter
High Efficiency
NSF/ANSI 372 - View details
Twin 10" Outdoor
High Efficiency
NSF/ANSI 372 - View details
Twin 12" Outdoor
High Efficiency
NSF/ANSI 372 - View details
Twin 14" Outdoor
High Efficiency
NSF/ANSI 372
Listings as of Oct 5, 2026.
About Culligan
Culligan is broadly third-party certified — but the proof is scattered across three certifiers, not all on NSF. It's the century-old US softener brand, founded by Emmett Culligan in 1936 in Northbrook, Illinois (it built the first US residential water softener). Owned by BDT & MSD Partners since May 2016, after passing through many hands; HQ is 9399 West Higgins Road, Suite 1100, Rosemont, IL 60018.
Still softener-first, but the lineup spans softeners, RO, whole-house, drinking-water, and well-water UV. The headline softeners are the HE Series and the Aquasential Smart HE Twin; documented installed prices for them are on our Culligan water softener cost page. Other headline SKUs: Aquasential Smart RO (~$1,200-$2,500), IC-EZ-1/IC-EZ-3/IC-EZ-4 inline filters (~$50-$120), WH-S200-C/WH-HD200-C whole-house housings (~$120-$300), FM-15A faucet-mount (~$25-$35), and the CUV5-/CUV6-/CUVH5-/CUVH6- UV sterilizers. A 2020 buyout of Zero Technologies (ZeroWater) added the co-branded ZEROFXX pitcher filter.
The catch: the cert proof lives in three places. Only the UV sterilizers (33 records, NSF/ANSI 55) show up under 'Culligan International' on NSF's directory. The ZEROFXX pitcher is listed at IAPMO under Zero Technologies, LLC (NSF/ANSI 42, 53, 401). The softener, RO, and whole-house lines are WQA Gold Seal-certified (NSF/ANSI 42, 44, 53, 58, 401) at find.wqa.org. Search 'Culligan' on NSF alone and you only see the UV slice.
Sold through a ~600-dealer US network, with ~15,000 reviews at 4.4 stars.
Ownership history
- 1936
Emmett Culligan founds the Culligan Zeolite Company in Northbrook, Illinois and builds the first residential water softener in the United States. The core idea is bringing zeolite ion-exchange softening — until then a commercial and industrial technique — into the single-family home.
- 1947
Culligan launches the 'Hey Culligan Man!' radio campaign, one of the most-recognized brand catchphrases in 20th-century US advertising. It builds the brand's dealer-network sales model, where a local 'Culligan Man' delivers softener salt and services the home's equipment — a model that carries into the 21st century.
- 1950s
Culligan goes public on the back of the post-WWII suburban-softener boom, becoming one of the well-known mid-century US household brands alongside Maytag, Whirlpool, and Frigidaire.
- 1973
Beatrice Foods buys Culligan during its conglomerate era. Beatrice was a Chicago-based conglomerate that gathered many consumer brands across food, household products, and durable goods through the 1960s-1980s.
- 1985
Chicago Pacific Corporation buys Culligan from Beatrice Foods as Beatrice sells off its wider consumer-brand portfolio.
- 1989
Maytag Corporation buys Culligan from Chicago Pacific. Culligan runs as the water-treatment unit inside Maytag's appliance portfolio through the 1990s.
- 1995
Maytag spins Culligan off to US Filter, part of an industry-wide consolidation that pulled many water-treatment brands under the US Filter parent.
- 1999
Veolia, the French utility conglomerate, buys US Filter — and Culligan with it — as part of its global water-utility expansion. Culligan runs as the US consumer-residential brand inside Veolia's portfolio.
- 2004
Castle Harlan, a New York private-equity firm, buys Culligan from Veolia, returning the brand to US private ownership.
- 2007
Clayton, Dubilier & Rice buys Culligan from Castle Harlan for $840 million — one of the largest private-equity deals in consumer water treatment during the 2000s buyout era.
- 2012
Centerbridge Partners buys Culligan from Clayton, Dubilier & Rice (price undisclosed) and runs the brand through 2016, continuing to expand the dealer-network sales model.
- May 2016
BDT Capital Partners buys Culligan from Centerbridge Partners. BDT is a Chicago-based merchant-banking and family-investment firm led by Byron Trott, a former Goldman Sachs Vice Chairman whom Warren Buffett has repeatedly called 'one of the few investment bankers I trust.' BDT's long-hold approach — aiming at decades rather than the usual 3-7 year PE fund timeline — sets up the brand's post-2016 stability.
- 2020
Under BDT, Culligan buys Zero Technologies, LLC (the ZeroWater brand), adding pitcher filters to its lineup through the Culligan + ZeroWater ZEROFXX cartridge, which fits the Culligan US-EZ-4 system. The ZEROFXX cartridge is listed in IAPMO's certification database under Zero Technologies, LLC for NSF/ANSI 42 + 53 + 401 (Lead, Mercury, PFOA / PFOS, Total PFAS, Fluoride, Cadmium, Copper, Chromium-VI, and 13 NSF/ANSI 401 emerging compounds).
- 2023
BDT Capital Partners merges with Michael Dell's MSD Partners to form BDT & MSD Partners, and Culligan stays inside the merged firm's portfolio. The merger adds MSD's Dell-family investment arm to BDT, and the combined firm keeps the long-hold approach.
- 2026
Culligan is a stable BDT & MSD Partners portfolio company about 10 years into BDT's ownership, still rolling up regional dealer networks and adjacent water-treatment specialists. There is no announced exit or IPO, and the dealer-network sales model remains the brand's core, with ~600+ US dealers per its locator page.
Culligan HE Series Water Softener (Single-Tank Ion-Exchange)
The flagship single-tank salt-based softener, used in most dealer installs. Smart electronics regenerate by actual usage, not a clock timer (saves salt and water).
- Certified: WQA Gold Seal under NSF/ANSI 44 (hardness, plus barium and radium 226/228 on most listed models).
- Removes: hardness minerals via ion exchange; not chlorine, lead, or PFAS (those need the RO or whole-house carbon).
- Best for: single-family homes (1-5 baths) on hard water who want dealer install plus service, vs DIY brands (Aquasure Harmony, Whirlpool WHES40E, GE).
- Price: documented installed quotes and rental offers are on our Culligan water softener cost page.
Culligan Aquasential Smart HE Twin Softener (Two-Tank Smart Softener)
The premium two-tank softener with Culligan Connect app monitoring. Twin tanks give 24/7 soft water — one regenerates while the other supplies, so there's no overnight gap like the single-tank HE Series.
- Certified: WQA Gold Seal under NSF/ANSI 44 — same cert as the base HE Series; the smart app (salt alerts, regeneration tracking, usage reports) is a feature, not a separate cert.
- Best for: premium or larger homes (5+ baths) wanting softening plus smart monitoring.
- Price: documented installed quotes and rental offers are on our Culligan water softener cost page.
Culligan Aquasential Smart RO (Under-Sink Reverse Osmosis with Smart Connectivity)
The premium under-sink RO with Culligan Connect filter-life tracking — the brand's broadest drinking-water cert.
- Certified: WQA Gold Seal under NSF/ANSI 58 (RO — TDS, fluoride, arsenic-pentavalent, cadmium, barium, copper, radium, selenium), NSF/ANSI 42 (chlorine, taste-and-odor), plus 53 and 401 on select cartridges.
- Best for: households also running the Aquasential Smart HE Twin — softening plus RO under one dealer service contract.
- Price: ~$1,200-$2,500 dealer-install (dedicated faucet, smart gateway, first-year service).
Culligan IC-EZ-1 / IC-EZ-3 / IC-EZ-4 Inline Drinking-Water Filter Cartridges
The under-sink inline drinking-water filter family.
- Certified: WQA Gold Seal under NSF/ANSI 42 and 53 — chlorine, taste-and-odor, lead, mercury, cysts.
- Variants: the IC-EZ-1/IC-EZ-3/IC-EZ-4 series replaced the older IC/IC-EZ generations; the IC-EZ-4 is in turn replaced by the EZ-Change series in some channels. Cross-fit is partial — the IC-EZ-4 head fits IC-EZ-1 and IC-EZ-3 bodies, but cartridges are keyed to a generation. Check your housing before ordering a refill — buyers routinely get the wrong one.
- Price: ~$50-$120 per cartridge; replace every 6-12 months.
Culligan WH-S200-C / WH-HD200-C Whole-House Cartridge-Housing Filters
Whole-house housings for sediment plus light chemical reduction at the point of entry.
- Certified: WQA Gold Seal under NSF/ANSI 42 (chlorine, taste-and-odor) at the carbon-cartridge stage. NSF/ANSI 53 (lead, cyst, VOC) is brand-claimed, not listed at the housing level — for listed health-contaminant reduction, use the Aquasential Smart RO instead.
- Variants: WH-S200-C standard-duty; WH-HD200-C heavy-duty (higher flow, longer intervals). Both take R-50-BBSA sediment and RC-EZ-1/RC-EZ-3/RC-EZ-4 chemical cartridges.
- Price: ~$120-$300 housings; cartridges ~$25-$80 each.
Culligan FM-15A Faucet-Mount Filter
The faucet-mount filter — push-on/twist-lock onto a standard kitchen faucet, no plumbing needed. The cheapest cert-bearing Culligan drinking-water SKU; competes with the PUR PFM400H (NSF/ANSI 42, 53, 401).
- Certified: WQA Gold Seal under NSF/ANSI 42 (chlorine, taste-and-odor) and NSF/ANSI 53 (lead).
- Best for: renters and entry-tier buyers who don't want the Smart RO's dealer install.
- Price: ~$25-$35; cartridges ~$10-$15 each.
Culligan CUV5- / CUV6- / CUVH5- / CUVH6- NSF/ANSI 55 UV Sterilizer Family
The UV disinfection family for residential and light-commercial well water — the brand's only SKUs on NSF's directory (33 records).
- Certified: NSF/ANSI 55 Class B (bacteria, virus, protozoa for residential/light-commercial use — not the higher Class A public-health tier).
- Removes: microbes only — needs a sediment pre-filter (WH-S200-C or similar) to keep UV effective; doesn't touch chlorine, chemicals, or hardness.
- Variants: flow 1.6 GPM (CUV6-02XA) up to 28 GPM (CUVH6-40XB); UV lamp replaced yearly.
- Price: ~$500-$2,500 dealer-install by flow rate.
Culligan + ZeroWater ZEROFXX Co-Branded Pitcher Filter (post-2020 ZeroWater Acquisition)
Culligan's pitcher entry from the 2020 ZeroWater buyout — a co-branded cartridge for the US-EZ-4 system on ZeroWater's 5-stage architecture (sediment, carbon, ion-exchange, carbon, sediment). The broadest cert-listed contaminant menu in the lineup.
- Certified: IAPMO-listed under Zero Technologies, LLC for NSF/ANSI 42, 53, 401 — Lead, Mercury, PFOA/PFOS, Total PFAS, Fluoride, Cadmium, Copper, Chromium-VI, plus 13 emerging compounds.
- Note: fits the US-EZ-4 pitcher, not the IC-EZ inline housings — a different cartridge family.
- Price: ~$20-$30 per cartridge.
Headquartered at 9399 West Higgins Road, Suite 1100, Rosemont, IL 60018 (per the NSF directory's address-of-record on the 33 UV-sterilizer listings) — corporate, engineering, and product development.
Manufacturing is spread across US facilities (softener-tank fabrication plus a midwest/southeast/southwest dealer-distribution network) plus international partners for some categories. The ZEROFXX pitcher cartridge is made by Zero Technologies, LLC.
Culligan does not disclose component country-of-origin (RO membranes, UV lamps, softener resin, housings, valves). The ~600-dealer US network handles install, service, and refills for the softener/RO/whole-house lines; the Amazon-direct SKUs (FM-15A, IC-EZ inline filters, WH-S200-C/WH-HD200-C, ZEROFXX) ship through retail.
Culligan products we have verified
Each page checks the model's certification listings live in the NSF, IAPMO R&T and WQA directories, separates what the brand claims from what a certifier has listed, and prices ten years of ownership.
- Culligan Pitcher / Dispenser review: specs, true cost and cert check
Complete system · checked 2026-08-30
- Culligan WH-S200-C review: specs, true cost and cert check
Complete system · checked 2026-09-02
Which Culligan Filter Is Right for You?
We mapped each Culligan SKU’s NSF-listed certifications against the 10 contaminants people search for most. Where Culligan doesn’t have a certified SKU, we say so.
How Culligan Compares
Culligan Aquasential Smart HE Twin Softener vs Pentair Pelican PSE-1800
| Feature | Culligan Aquasential Smart HE Twin Softener | Pentair Pelican PSE-1800 |
|---|---|---|
| Format | Whole-house twin-tank salt-based ion-exchange softener with smart connectivity | Whole-house carbon + salt-based softener combo (single-tank) |
| NSF/ANSI 44 (cation-exchange softener — hardness reduction) | Yes — WQA Gold Seal certified | Yes — salt-based softener stage is cation-exchange |
| NSF/ANSI 42 (chlorine, taste-and-odor reduction at carbon stages) | No — softener-only architecture; chlorine reduction requires complementary Aquasential Smart HE Whole-House carbon filter | Yes — WQA Gold Seal certified (Pelican carbon stage covers chlorine + chloramine at whole-house POE) |
| Smart connectivity / remote monitoring | Yes — Culligan Connect app (salt-level alerts, regeneration tracking, water-usage reporting) | No — manual salt-level monitoring |
| Twin-tank 24/7 soft-water availability | Yes — twin-tank architecture provides continuous soft water (no overnight regeneration gap) | No — single-tank softener stage has overnight regeneration gap |
| Dealer-network service depth | ~600+ US Culligan dealers (per culligan.com locator) with same-day / next-day service in most metros | Pentair / Pelican dealer network smaller than Culligan's; many installs go through independent plumbers |
| Best for | Premium households wanting integrated whole-house softening + smart-home water monitoring + dealer-network service depth | Households wanting whole-house chlorine reduction + softening at materially lower price point with DIY-install option |
Format
Culligan Aquasential Smart HE Twin Softener
Whole-house twin-tank salt-based ion-exchange softener with smart connectivity
Pentair Pelican PSE-1800
Whole-house carbon + salt-based softener combo (single-tank)
NSF/ANSI 44 (cation-exchange softener — hardness reduction)
Culligan Aquasential Smart HE Twin Softener
Yes — WQA Gold Seal certified
Pentair Pelican PSE-1800
Yes — salt-based softener stage is cation-exchange
NSF/ANSI 42 (chlorine, taste-and-odor reduction at carbon stages)
Culligan Aquasential Smart HE Twin Softener
No — softener-only architecture; chlorine reduction requires complementary Aquasential Smart HE Whole-House carbon filter
Pentair Pelican PSE-1800
Yes — WQA Gold Seal certified (Pelican carbon stage covers chlorine + chloramine at whole-house POE)
Smart connectivity / remote monitoring
Culligan Aquasential Smart HE Twin Softener
Yes — Culligan Connect app (salt-level alerts, regeneration tracking, water-usage reporting)
Pentair Pelican PSE-1800
No — manual salt-level monitoring
Twin-tank 24/7 soft-water availability
Culligan Aquasential Smart HE Twin Softener
Yes — twin-tank architecture provides continuous soft water (no overnight regeneration gap)
Pentair Pelican PSE-1800
No — single-tank softener stage has overnight regeneration gap
Dealer-network service depth
Culligan Aquasential Smart HE Twin Softener
~600+ US Culligan dealers (per culligan.com locator) with same-day / next-day service in most metros
Pentair Pelican PSE-1800
Pentair / Pelican dealer network smaller than Culligan's; many installs go through independent plumbers
Best for
Culligan Aquasential Smart HE Twin Softener
Premium households wanting integrated whole-house softening + smart-home water monitoring + dealer-network service depth
Pentair Pelican PSE-1800
Households wanting whole-house chlorine reduction + softening at materially lower price point with DIY-install option
Bottom line: dealer service and smart features vs built-in chlorine reduction. Both are WQA Gold Seal-certified — Culligan under NSF/ANSI 44 for softening; Pelican under NSF/ANSI 42 (chlorine) plus 61 and 372 for its carbon stage.
- Pick the Culligan Aquasential Smart HE Twin if you want twin-tank 24/7 soft water, the Culligan Connect app, and ~600+ dealers for service.
- Pick the Pelican PSE-1800 if you want built-in whole-house chlorine reduction and the option to install it yourself.
Sources for facts in this comparison
- Brand officialaccessed: 2026-05-23https://www.culligan.com/product/smart-he-twin-water-softener
- Culligan Aquasential Smart HE Twin brand-official product page documents the twin-tank architecture, Culligan Connect smart-connectivity hardware, and the WQA Gold Seal certification under NSF/ANSI 44
- WQA listingaccessed: 2026-10-04https://find.wqa.org/find-products/ctl/detail/mid/1054/cid/culligan_internation/sid/2/keyword/culligan
- WQA Gold Seal directory, Culligan International's NSF/ANSI 44 listings: High Efficiency, Aquasential Smart High Efficiency (single and twin tank), Aquasential High Efficiency, Aquasential Select, Aquasential Select Plus and Aquasential Advantage softener rows; most claim barium, hardness and radium 226/228 reduction
- WQA listingaccessed: 2026-05-23https://www.wqa.org/programs/product-certification/
- WQA Gold Seal product-certification program documentation confirms WQA's role as one of several accredited certification bodies authorized to issue performance listings against the NSF/ANSI standards — applies to both Culligan and Pentair Pelican WQA-listed SKUs in this comparison
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo vs Aquasana Rhino EQ-1000
| Feature | Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo | Aquasana Rhino EQ-1000 |
|---|---|---|
| Format | Whole-house carbon (chlorine reduction) + separate salt-based softener stage — Culligan dealer-installed | Whole-house carbon-tank backwashing + salt-free scale-inhibitor — Aquasana DIY or dealer install |
| NSF/ANSI 42 (chlorine, taste-and-odor reduction at carbon stage) | Yes — WQA Gold Seal certified on the Smart HE Whole-House carbon stage | No — the Aquasana Rhino is independently lab-tested per the brand's own pages, not third-party certified under NSF/ANSI 42 |
| NSF/ANSI 44 (cation-exchange softener — hardness reduction) | Yes — WQA Gold Seal certified on the HE Series softener stage | No — Aquasana Rhino uses salt-free TAC scale-inhibitor architecture, not true softening (different scope from NSF/ANSI 44) |
| Salt-free vs salt-based softening | Salt-based ion-exchange softening (sodium-regeneration cycle, requires brine tank refill) | Salt-free TAC scale-inhibitor (no sodium addition, no brine tank, no regeneration cycle) |
| Service / install path | Culligan dealer-network professional install + ongoing service (the brand's structural go-to-market model) | Aquasana DIY install or independent plumber install; less established dealer-service network than Culligan |
| Carbon stage service interval | 5-7 year media replacement on the Smart HE Whole-House | 5-6 year media replacement on the Rhino EQ-1000 |
| Best for | Hard-water households wanting true salt-based softening + cert-listed chlorine reduction + dealer-network service depth at the premium price tier | Hard-water households wanting salt-free scale control + DIY-install + materially lower price point |
Format
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Whole-house carbon (chlorine reduction) + separate salt-based softener stage — Culligan dealer-installed
Aquasana Rhino EQ-1000
Whole-house carbon-tank backwashing + salt-free scale-inhibitor — Aquasana DIY or dealer install
NSF/ANSI 42 (chlorine, taste-and-odor reduction at carbon stage)
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Yes — WQA Gold Seal certified on the Smart HE Whole-House carbon stage
Aquasana Rhino EQ-1000
No — the Aquasana Rhino is independently lab-tested per the brand's own pages, not third-party certified under NSF/ANSI 42
NSF/ANSI 44 (cation-exchange softener — hardness reduction)
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Yes — WQA Gold Seal certified on the HE Series softener stage
Aquasana Rhino EQ-1000
No — Aquasana Rhino uses salt-free TAC scale-inhibitor architecture, not true softening (different scope from NSF/ANSI 44)
Salt-free vs salt-based softening
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Salt-based ion-exchange softening (sodium-regeneration cycle, requires brine tank refill)
Aquasana Rhino EQ-1000
Salt-free TAC scale-inhibitor (no sodium addition, no brine tank, no regeneration cycle)
Service / install path
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Culligan dealer-network professional install + ongoing service (the brand's structural go-to-market model)
Aquasana Rhino EQ-1000
Aquasana DIY install or independent plumber install; less established dealer-service network than Culligan
Carbon stage service interval
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
5-7 year media replacement on the Smart HE Whole-House
Aquasana Rhino EQ-1000
5-6 year media replacement on the Rhino EQ-1000
Best for
Culligan Aquasential Smart HE Whole-House Carbon + HE Series Softener Combo
Hard-water households wanting true salt-based softening + cert-listed chlorine reduction + dealer-network service depth at the premium price tier
Aquasana Rhino EQ-1000
Hard-water households wanting salt-free scale control + DIY-install + materially lower price point
Bottom line: true salt softening with listed certs vs salt-free scale control you can install yourself. Culligan's carbon stage is WQA-listed under NSF/ANSI 42 and its softener under NSF/ANSI 44; the Rhino's chlorine claim is brand-tested, not listed.
- Pick the Culligan combo if you want real salt-based softening, cert-listed chlorine reduction, and ~600+ dealers for service.
- Pick the Aquasana Rhino EQ-1000 if you want salt-free (no sodium, no brine tank — good for low-sodium diets or septic) and a DIY install.
Sources for facts in this comparison
- Brand officialaccessed: 2026-05-23https://www.culligan.com/product/smart-he-whole-house-water-filter
- Culligan Aquasential Smart HE Whole-House brand-official product page documents the WQA Gold Seal certification under NSF/ANSI 42 and the catalytic-carbon media architecture for chlorine + chloramine reduction at whole-house point-of-entry
- WQA listingaccessed: 2026-10-04https://find.wqa.org/find-products/ctl/detail/mid/1054/cid/culligan_internation/sid/2/keyword/culligan
- WQA Gold Seal directory, Culligan International's NSF/ANSI 44 listings: High Efficiency, Aquasential Smart High Efficiency (single and twin tank), Aquasential High Efficiency, Aquasential Select, Aquasential Select Plus and Aquasential Advantage softener rows; most claim barium, hardness and radium 226/228 reduction
- Brand officialaccessed: 2026-05-23https://www.aquasana.com/whole-house-water-filters/rhino-100365488.html
- Aquasana Rhino EQ-1000 brand-official product page documents the salt-free TAC scale-inhibitor architecture and the brand-published lab-testing cert framing (NSF/ANSI 42 / 61 / 372 across the Rhino family per the brand's certified-products page; OptimH2O whole-house variant is IAPMO-tested)
Looking for a broader comparison? See our full whole-house filter roundup.
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What Reddit Says About Culligan
These quotes are paraphrased — not verbatim — from public Reddit threads. Each card links to the original thread so you can read the discussion in context and verify the sentiment for yourself.
“An owner looking for cheaper cartridges for a Culligan RO system ran into the defining complaint about dealer-installed equipment: the encapsulated cartridge format takes no third-party adapter, and the sub's read was that this is a deliberate design outcome rather than an accident of engineering. The consequence for buyers is that the purchase decides the consumable supplier for the life of the system, which is a cost worth pricing over ten years rather than at the point of installation.”View thread
“A household already running a whole-house filter but still seeing scale on fixtures asked whether to add a Culligan softener. The clarification is the one most buyers in this category need: a salt-free conditioner and an ion-exchange softener are different technologies solving different problems, the conditioner's media exhausts and needs periodic replacement, and only the softener actually removes hardness. If your complaint is scale and staining, the distinction decides which product will fix it.”View thread
Quotes verified on 2026-05-23.
Culligan Customer Reviews Summary
What Customers Love
- Dealer service runs deep — the same dealer who installs the system also handles service, salt delivery, and maintenance.
- The Aquasential Smart HE Twin keeps soft water flowing 24/7, with no overnight gap like single-tank softeners have.
- The Culligan Connect app adds salt-level alerts, regeneration tracking, water-use reporting, and automatic service scheduling.
- About 90 years of history and BDT's long-hold ownership give buyers more brand stability and warranty support than newer water-treatment brands.
Common Concerns
- Dealer install costs far more than buying an Amazon-direct softener such as the Aquasure Harmony and installing it yourself.
- The certifications are scattered across three databases (NSF, IAPMO, and WQA's find.wqa.org), so searching only NSF's for 'Culligan' misses the WQA Gold Seal and IAPMO listings.
- The replacement-cartridge naming (IC-EZ-1 / IC-EZ-3 / IC-EZ-4 / EZ-Change) and only-partial compatibility make it easy to order the wrong one.
- Because pricing is set by the dealer, it varies by region, water hardness, and household size — the ranges shown are typical, not fixed retail prices.
Culligan runs a ~600-dealer US service network per its locator page — a far deeper service footprint than Amazon-direct softener rivals like Aquasure Harmony, Whirlpool WHES40E, and GE softeners.
The FM-15A faucet-mount filter (~$25-$35 on Amazon) is the brand's most-reviewed Amazon product, with ~3,500-4,500 reviews at a 4.4-star average — the entry-level way most people first try a Culligan filter.
The 'Hey Culligan Man!' jingle (1947 onward) gave the brand roughly 90 years of name recognition long before online reviews existed, so awareness runs well ahead of what the per-product review counts suggest.
Review counts and ratings are as published by the sources above, on the dates shown. Individual results may vary.
About Culligan Marketing Language
Some claims on Culligan packaging and product pages are frequently confused with what the underlying third-party certifications actually cover. The note below documents one such mismatch with primary-source citations so you can verify the specifics yourself.
Search NSF's certification database for 'Culligan' and you only see the UV sterilizers — the softener, whole-house, RO, and ZeroWater pitcher lines are certified through WQA and IAPMO instead.
Bottom line: Culligan is broadly certified — but you have to check three directories to see it. A ~90-year history plus the 2020 ZeroWater buyout scattered the listings across NSF International, IAPMO R&T, and WQA.
- NSF directory (info.nsf.org) — only the UV sterilizers: 33 records under 'Culligan International' for NSF/ANSI 55.
- IAPMO (pld.iapmo.org) — the co-branded ZEROFXX pitcher, listed under Zero Technologies, LLC for NSF/ANSI 42, 53, 401.
- WQA Gold Seal (find.wqa.org) — the softeners, RO, and whole-house lines, the bestsellers, for NSF/ANSI 42, 44, 53, 58, 401.
WQA listings are accredited and equal to NSF — just indexed separately. So Culligan really is certified across NSF/ANSI 42, 44, 53, 55, 58, and 401; the proof is just spread out. Searching NSF alone makes a broadly-certified brand look like it only certifies UV.
Sources
- NSF listingaccessed: 2026-05-23https://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName=Culligan+International
- NSF's certification database company-name search for 'Culligan International' returns 33 records under NSF/ANSI 55 (UV Microbiological Water Treatment Systems) covering the CUV5- / CUV6- / CUVH5- / CUVH6- UV sterilizer family — the cert-evidence anchor for the local NSF data slice at Culligan International
- IAPMO listingaccessed: 2026-05-23https://pld.iapmo.org/
- IAPMO's certification database search for the Culligan + ZeroWater co-branded ZEROFXX pitcher filter under Zero Technologies, LLC returns Active listings under NSF/ANSI 42 + 53 + 401 — the cert-evidence anchor for the post-2020 ZeroWater-acquisition integration
- WQA listingaccessed: 2026-05-23https://www.wqa.org/programs/product-certification/
- WQA Gold Seal product-certification program documentation confirms WQA's role as one of several accredited certification bodies authorized to issue performance listings against the NSF/ANSI standards — Culligan's softener / whole-house / RO cert evidence is indexed at find.wqa.org rather than in NSF's certification database
- WQA listingaccessed: 2026-10-04https://find.wqa.org/find-products/ctl/detail/mid/1054/cid/culligan_internation/sid/2/keyword/culligan
- WQA Gold Seal directory, Culligan International's NSF/ANSI 44 listings: High Efficiency, Aquasential Smart High Efficiency (single and twin tank), Aquasential High Efficiency, Aquasential Select, Aquasential Select Plus and Aquasential Advantage softener rows; most claim barium, hardness and radium 226/228 reduction
- Brand officialaccessed: 2026-05-23https://www.culligan.com/about-us
- Culligan brand-official About Us page documents the 1936 founding, the ~90-year ownership history culminating in the May 2016 BDT Capital Partners acquisition, and the post-2020 ZeroWater-acquisition product-line integration — the corporate-history anchor for the parent-company / private-label rollup confusion pattern
Verified 2026-05-23.
Frequently Asked Questions About Culligan Water Filters
Yes — but the certs sit at three different certifiers (NSF, IAPMO, and WQA), so no one search shows them all.
- NSF (info.nsf.org) — 33 records under 'Culligan International' for the NSF/ANSI 55 UV sterilizers (CUV5-/CUV6-/CUVH5-/CUVH6-).
- IAPMO (pld.iapmo.org) — the co-branded ZEROFXX pitcher under Zero Technologies, LLC for NSF/ANSI 42, 53, 401 (Lead, Mercury, PFOA/PFOS, Total PFAS, plus 13 emerging compounds).
- WQA Gold Seal (find.wqa.org) — softeners (NSF/ANSI 44), the Smart RO (42, 53, 58, 401), and whole-house carbon (42). Equal to NSF, just indexed separately.
You can search Culligan International on the NSF DWTU directory for the UV slice. Before picking a SKU, check your water quality by ZIP code so the cert scope matches your water.
How We Researched Culligan
Our brand assessments follow a four-tier source ladder. We start with Tier 1 primary sources — NSF International, IAPMO, and WQA certification listings, plus SEC filings and EPA records — to establish what is third-party verified. We then layer in brand-official statements (corporate sites, datasheets, support pages) for context, tier-1 journalism for independent reporting, and community signals (Reddit threads, Amazon reviews) for real-world ownership experience. Every claim on this page traces back to one of the citations below.
Reviewed by TapWaterData Editorial.
All sources (7)
- NSF listingAccessed 2026-05-23https://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName=Culligan+International
NSF's certification database company-name search for 'Culligan International' returns 33 records under NSF/ANSI 55 (UV Microbiological Water Treatment Systems) covering the CUV5- / CUV6- / CUVH5- / CUVH6- UV sterilizer family — the anchor for the local NSF data slice
- Brand officialAccessed 2026-05-23https://www.culligan.com/
Culligan brand-official homepage documents the residential water-softener + whole-house + RO + drinking-water product strategy across the dealer-network direct-to-consumer model — the canonical century-old US water-treatment brand
- Brand officialAccessed 2026-05-23https://www.culligan.com/about-us
Culligan brand-official About Us page documents the 1936 founding by Emmett Culligan in Northbrook IL, the ~90-year ownership history across Beatrice Foods, Chicago Pacific, Maytag, multiple private-equity rollups, and the current BDT Capital Partners parent
- Brand officialAccessed 2026-05-23https://www.bdtcap.com/
BDT Capital Partners brand-official homepage documents the firm's long-hold private merchant-banking / family-investment orientation — founded 2009 by Byron Trott, headquartered in Chicago, focused on multi-generational family-business investments. Acquired Culligan in May 2016
- IAPMO listingAccessed 2026-05-23https://pld.iapmo.org/
IAPMO's certification database search for the Culligan + ZeroWater co-branded ZEROFXX pitcher filter under Listee Name 'Zero Technologies, LLC' confirms Active NSF/ANSI 42 + 53 + 401 listings covering Lead, Mercury, PFOA / PFOS, Total PFAS, Fluoride, Cadmium, Copper, Chromium-VI, plus 13 NSF/ANSI 401 emerging compounds — the cert-evidence anchor for the post-2020 ZeroWater-acquisition integration
- WQA listingAccessed 2026-05-23https://www.wqa.org/programs/product-certification/
WQA Gold Seal product-certification program documentation confirms WQA's role as one of several accredited certification bodies authorized to issue performance listings against the NSF/ANSI drinking-water-treatment-unit standards — substantively equivalent to NSF International or IAPMO R&T listings under the same standard. Culligan's softener / whole-house / RO cert evidence is indexed at find.wqa.org
- Brand officialAccessed 2026-05-23https://www.aquasana.com/whole-house-water-filters/rhino-100365488.html
Comparison facts: Aquasana Rhino EQ-1000 brand-official product page documents the salt-free TAC scale-inhibitor architecture and the brand-published lab-testing cert framing — used in the Culligan Aquasential Smart HE Whole-House + HE Series Softener Combo vs Aquasana Rhino EQ-1000 comparison
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