PUR Replacement filters
- Faucet
- Point of use
- City water
- Replacement element
- Listed
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Our verdict on the PUR Replacement filters
PUR water filter replacement is not one universal cartridge: RF-9999 is for PUR faucet systems, while CRF-950Z and the current PPF951K are for PUR pitchers and dispensers. Replace the faucet element after 100 gallons or 3 months and the pitcher/dispenser element after 40 gallons or 2 months.[1][2][3]
Best for
- Owners who match RF-9999 to a listed PUR faucet host or CRF-950Z/PPF951K to a PUR pitcher or dispenser
Not for
- Water that is microbiologically unsafe or of unknown quality unless it receives adequate disinfection before or after filtration
- RF-9999 faucet installations outside the published 20–100 psig working-pressure range
Primary sourceVerified 2026-08-30Brand officialManufacturer datasheet
Which models the PUR Replacement filters fits
The PUR Replacement filters fits the 37 models listed below, verified 2026-08-30.[1][2][3]
| Model | Notes |
|---|---|
| FM2000B | RF-9999 faucet host |
| FM3333B | RF-9999 faucet host |
| FM2100B | RF-9999 faucet host |
| FM2500V | RF-9999 faucet host |
| FM2700G | RF-9999 faucet host |
| FM2800N | RF-9999 faucet host |
| FM3700B | RF-9999 faucet host |
| FM4000B | RF-9999 faucet host |
| PFM100B | RF-9999 faucet host |
| PFM150W | RF-9999 faucet host |
| PFM200B | RF-9999 faucet host |
| PFM222B | RF-9999 faucet host |
| PFM244W | RF-9999 faucet host |
| PFM270G | RF-9999 faucet host |
| PFM300V | RF-9999 faucet host |
| PFM310M | RF-9999 faucet host |
| PFM350V | RF-9999 faucet host |
| PFM360F | RF-9999 faucet host |
| PFM400H | RF-9999 faucet host |
| PFM400HC | RF-9999 faucet host |
| PFM410F | RF-9999 faucet host |
| PFM420W | RF-9999 faucet host |
| PFM450S | RF-9999 faucet host |
| PFM800HX | RF-9999 faucet host |
| PPT700X | PPF951K pitcher host; X is the published color suffix |
| PPT711X | PPF951K pitcher host; X is the published color suffix |
| PPT111X | PPF951K pitcher host; X is the published color suffix |
| PPT001X | PPF951K pitcher host; X is the published color suffix |
| PPT120X | PPF951K pitcher host; X is the published color suffix |
| CR1100X | PPF951K pitcher host; X is the published color suffix |
| DS1800X | PPF951K dispenser host; X is the published color suffix |
| DS1811X | PPF951K dispenser host; X is the published color suffix |
| PDI4000X | PPF951K dispenser host; X is the published color suffix |
| PDS1820X | PPF951K dispenser host; X is the published color suffix |
| PPT600X | PPF951K pitcher host; X is the published color suffix |
| PPT650X | PPF951K pitcher host; X is the published color suffix |
| All PUR pour-through pitchers and dispensers | NSF directory scope published for CRF-950Z |
Primary sourceVerified 2026-08-30Manufacturer datasheetNSF listing
Certification check: PUR Replacement filters
Listed by NSF under NSF/ANSI 401, NSF/ANSI 42, and NSF/ANSI 53, and by IAPMO R&T under NSF/ANSI 401, NSF/ANSI 42, and NSF/ANSI 53, checked in the certifier directories as of 2026-08-30.
- NSF
- NSF/ANSI 401NSF/ANSI 42NSF/ANSI 53
- IAPMO R&T
- NSF/ANSI 401NSF/ANSI 42NSF/ANSI 53
| Directory | Result | Listing |
|---|---|---|
| NSF | Listing found (checked 2026-08-30) | View listing |
| IAPMO R&T | Listing found (checked 2026-08-30) | View listing |
| WQA | Listing found (checked 2026-08-30) | View listing |
Claimed vs. certified: PUR Replacement filters
| Contaminant | Status | Third-party listing | What the brand says |
|---|---|---|---|
| PPF951K: chlorine taste and odor | Marketed only | No entry |
|
| PPF951K: lead at pH 6.5 | Marketed only | No entry |
|
| RF-9999: chlorine taste and odor | Marketed only | No entry |
|
| RF-9999: lead at pH 6.5 | Marketed only | No entry |
|
| PPF951K: microplastics | Certified and marketed |
|
|
| PPF951K: total PFAS | Certified and marketed |
|
|
| RF-9999: microplastics | Certified and marketed |
|
|
| RF-9999: total PFAS | Certified and marketed |
|
|
| CRF-950Z: benzene | Certified only |
| No entry |
| CRF-950Z: bisphenol A | Certified only |
| No entry |
| CRF-950Z: cadmium | Certified only |
| No entry |
| CRF-950Z: carbon tetrachloride | Certified only |
| No entry |
| CRF-950Z: chlorine | Certified only |
| No entry |
| CRF-950Z: copper | Certified only |
| No entry |
| CRF-950Z: estrone | Certified only |
| No entry |
| CRF-950Z: ethylbenzene | Certified only |
| No entry |
| CRF-950Z: ibuprofen | Certified only |
| No entry |
| CRF-950Z: linuron | Certified only |
| No entry |
| CRF-950Z: mercury | Certified only |
| No entry |
| CRF-950Z: methoxychlor | Certified only |
| No entry |
| CRF-950Z: microplastics | Certified only |
| No entry |
| CRF-950Z: naproxen | Certified only |
| No entry |
| CRF-950Z: nominal particulate, Class I | Certified only |
| No entry |
| CRF-950Z: nonylphenol | Certified only |
| No entry |
| CRF-950Z: phenytoin | Certified only |
| No entry |
| CRF-950Z: simazine | Certified only |
| No entry |
| CRF-950Z: taste and odor | Certified only |
| No entry |
| CRF-950Z: tetrachloroethylene | Certified only |
| No entry |
| CRF-950Z: toluene | Certified only |
| No entry |
| CRF-950Z: trimethoprim | Certified only |
| No entry |
| CRF-950Z: xylenes | Certified only |
| No entry |
| CRF-950Z: zinc | Certified only |
| No entry |
| PPF951K: benzene | Certified only |
| No entry |
| PPF951K: bisphenol A | Certified only |
| No entry |
| PPF951K: cadmium | Certified only |
| No entry |
| PPF951K: carbon tetrachloride | Certified only |
| No entry |
| PPF951K: chlorine | Certified only |
| No entry |
| PPF951K: copper | Certified only |
| No entry |
| PPF951K: estrone | Certified only |
| No entry |
| PPF951K: ethylbenzene | Certified only |
| No entry |
| PPF951K: ibuprofen | Certified only |
| No entry |
| PPF951K: lead | Certified only |
| No entry |
| PPF951K: linuron | Certified only |
| No entry |
| PPF951K: mercury | Certified only |
| No entry |
| PPF951K: methoxychlor | Certified only |
| No entry |
| PPF951K: naproxen | Certified only |
| No entry |
| PPF951K: nonylphenol | Certified only |
| No entry |
| PPF951K: particulate Class I | Certified only |
| No entry |
| PPF951K: phenytoin | Certified only |
| No entry |
| PPF951K: simazine | Certified only |
| No entry |
| PPF951K: taste and odor | Certified only |
| No entry |
| PPF951K: tetrachloroethylene | Certified only |
| No entry |
| PPF951K: toluene | Certified only |
| No entry |
| PPF951K: trimethoprim | Certified only |
| No entry |
| PPF951K: xylenes | Certified only |
| No entry |
| PPF951K: zinc | Certified only |
| No entry |
| RF-9999: atenolol | Certified only |
| No entry |
| RF-9999: bisphenol A | Certified only |
| No entry |
| RF-9999: carbamazepine | Certified only |
| No entry |
| RF-9999: chlorine | Certified only |
| No entry |
| RF-9999: DEET | Certified only |
| No entry |
| RF-9999: estrone | Certified only |
| No entry |
| RF-9999: ibuprofen | Certified only |
| No entry |
| RF-9999: lead | Certified only |
| No entry |
| RF-9999: linuron | Certified only |
| No entry |
| RF-9999: meprobamate | Certified only |
| No entry |
| RF-9999: mercury | Certified only |
| No entry |
| RF-9999: metolachlor | Certified only |
| No entry |
| RF-9999: naproxen | Certified only |
| No entry |
| RF-9999: nonylphenol | Certified only |
| No entry |
| RF-9999: particulate Class I | Certified only |
| No entry |
| RF-9999: phenytoin | Certified only |
| No entry |
| RF-9999: taste and odor | Certified only |
| No entry |
| RF-9999: TCPP | Certified only |
| No entry |
| RF-9999: trimethoprim | Certified only |
| No entry |
| RF-9999: VOC | Certified only |
| No entry |
How long the PUR Replacement filters lasts, and what it costs a year
Replacing it on that schedule costs $0.00 a year, verified 2026-08-30.
Cost per year
| Element | Replace | Cost per year |
|---|---|---|
| RF-9999 | every 3 months, or every 100 gallons | No yearly figure recorded |
| CRF-950Z / PPF951K | every 2 months, or every 40 gallons | No yearly figure recorded |
| Total per year | $0.00 | |
Primary sourceVerified 2026-08-30Brand official
What the PUR Replacement filters does not do
PUR identifies RF-9999 for faucet systems and CRF-950Z/PPF951K for pitchers and dispensers; do not treat the two cartridge forms as interchangeable. The PUR Replacement filters's recorded operating limits are RF-9999 faucet-system working pressure at least 20 psig and up to 100 psig, verified 2026-08-30.
PUR identifies RF-9999 for faucet systems and CRF-950Z/PPF951K for pitchers and dispensers; do not treat the two cartridge forms as interchangeable.[1][2]
Primary sourceVerified 2026-08-30Brand official
Like other leading brands, PUR does not filter microbes.[1][2]
Primary sourceVerified 2026-08-30Manufacturer datasheet
The PUR faucet and pitcher filters are not intended to purify water.[1][2]
Primary sourceVerified 2026-08-30Manufacturer datasheet
Operating limits
| Parameter | Limit | What it means |
|---|---|---|
| RF-9999 faucet-system working pressure | at least 20 psig and up to 100 psig[1] | Applies to faucet-mount systems using RF-9999, not to pitcher/dispenser cartridges Primary sourceVerified 2026-08-30Manufacturer datasheet |
Do not buy it for these situations
Water pressureDo not use an RF-9999 faucet host outside its published 20–100 psig working-pressure range.[1]
Primary sourceVerified 2026-08-30Manufacturer datasheet
What the PUR Replacement filters really costs
DIY install[1]
Primary sourceVerified 2026-08-30Brand official
Replacement schedule
| Element | Replace | Cost per year |
|---|---|---|
| RF-9999 | every 3 months, or every 100 gallons | Not recorded |
| CRF-950Z / PPF951K | every 2 months, or every 40 gallons | Not recorded |
Primary sourceVerified 2026-08-30Brand official
Ten-year cost of ownership
| Replacement elements, 10 × $0.00/year | $0.00 |
|---|---|
| Sum of the lines above (as of 2026-08-30) | $0.00 |
Installing the PUR Replacement filters
DIY install, verified 2026-08-30.
Manufacturer documentation
- Install manual: https://www.pur.com/pur_support_filters/ (accessed 2026-08-30)
Ongoing maintenance
- Replace RF-9999, then flush cold filtered water for five minutes before first use — every 3 months
- Replace CRF-950Z/PPF951K and reset the pitcher filter light if equipped — every 2 months
Primary sourceVerified 2026-08-30Brand official
Track record: PUR Replacement filters
Amazon — RF99994 four-pack shows 4.7 out of 5 from 18,637 reviews as of 2026-08-30; Amazon — PPF951K1 one-pack shows 4.5 out of 5 from 28,307 reviews as of 2026-08-30.
| Source | Rating | Reviews | As of |
|---|---|---|---|
| Amazon — RF99994 four-pack | 4.7 out of 5 | 18,637 | 2026-08-30 |
| Amazon — PPF951K1 one-pack | 4.5 out of 5 | 28,307 | 2026-08-30 |
The PUR Replacement filters against its family and its rivals
The PUR Replacement filters has 5 siblings in its family: PPF951K, CRF-950Z, RF-9999, PPF900Z, RF-3375.
The rest of the family
| Model | What differs |
|---|---|
| PPF951K | Current pitcher/dispenser cartridge; 40 gallons or 2 months |
| CRF-950Z | Pitcher/dispenser identifier; 40 gallons or 2 months |
| RF-9999 | Faucet cartridge; 100 gallons or 3 months |
| PPF900Z | Basic pitcher/dispenser cartridge; 40 gallons or 2 months |
| RF-3375 | Alternate faucet cartridge listed alongside RF-9999; 100 gallons or 3 months |
The PUR Replacement filters and cartridges sold as compatible
The dated certifier listings cover the named OEM PUR elements CRF-950Z, RF-9999 and PPF951K within their published host scopes. This record makes no certification claim for a third-party cartridge merely marketed as compatible with a PUR host.[1][2][3][4][5]
Primary sourceVerified 2026-08-30NSF listingIAPMO listingWQA listing
PUR Replacement filters questions, answered
How often should I replace a PUR faucet filter?
Replace an RF-9999 faucet filter after 100 gallons or 3 months, whichever comes first. PUR also instructs owners to flush cold filtered water for five minutes after installing a new faucet cartridge.
Sources: [1]
Are PUR pitcher and faucet replacement filters interchangeable?
Do PUR RF-9999 and PPF951K filters remove microbes?
Sources and data report: PUR Replacement filters
Every figure above is taken from the highest-trust source that carries it and re-derived from that source by a separate check. How we verify product data.
What we could not establish, and why
| Field | Why it is blank |
|---|---|
| identity.asin | The approved row combines separately sold RF99994 and PPF951K1 packs with different confirmed Amazon ASINs, so no single ASIN represents this family record. |
| identity.upc | PUR's product pages, performance sheets, and the two exact Amazon listings did not publish one UPC that applies to the combined faucet and pitcher-filter family. |
| identity.capacity | The official performance sheets publish incompatible element capacities: RF-9999 is 100 gallons and CRF-950Z/PPF951K is 40 gallons. The schema permits only one family-level capacity, so it is not collapsed. |
| identity.lifespan | PUR publishes 3 months for RF-9999 and 2 months for CRF-950Z/PPF951K. The schema permits one lifespan for this combined record, so the variant schedules remain in cost.replacementSchedule. |
| certified.certIndexKey | No matching local certification-index artifact was available in this worktree; the separate dated live NSF, IAPMO R&T, and WQA checks establish directory evidence without treating corpus silence as certification evidence. |
| mechanism.treatmentMethods | PUR names activated carbon and ion-exchange materials for current PPF951K but does not publish one ordered treatment train shared with RF-9999, and generic ion exchange cannot be mapped safely to the closed anion-exchange vocabulary. |
| fit.bathroomsServed | The manufacturer performance sheets and support pages describe point-of-use cartridges and publish no bathroom sizing range. |
| fit.householdSize | The manufacturer performance sheets and support pages publish no supported household-size range for either cartridge form. |
| fit.serviceFlowGpm | RF-9999 is rated at 0.52 gpm while the pitcher element is stated as 2 gallons per day; the schema has one service-flow field and these unlike measures cannot be collapsed. |
| fit.roOutputGpd | These are faucet and pour-through elements, not reverse-osmosis membranes; PUR publishes no RO output. |
| fit.roTankCapacity | These elements do not use an RO storage tank; PUR publishes no tank-capacity specification. |
| fit.dimensions | The captured OEM pages and performance sheets did not publish one height-width-depth set, and the two cartridge forms have different physical dimensions. |
| fit.pressureRange | The RF-9999 faucet systems have a 20–100 psig range, while pitcher/dispenser elements have no pressurized operating range. The variant-specific bound is preserved in effectivenessBounds instead of being applied family-wide. |
| fit.connectionSize | These are twist-in replacement elements rather than plumbed housings, and the OEM documents publish no family-level connection size. |
| fit.requiresElectricity | The official replacement instructions do not state an electricity requirement for the cartridges; no absence value was inferred from omitted specifications. |
| fit.requiresDrain | The official replacement instructions do not state a drain requirement; no absence value was inferred from omitted specifications. |
| cost.msrp | The captured PUR product pages did not publish a stable manufacturer suggested retail price for the combined replacement-filter family. |
| cost.streetPrice | Exact Amazon prices were confirmed for different pack-specific variants ($54.99 RF99994 and $13.77 PPF951K1 on 2026-08-30), but the schema permits only one family street price, so neither was misrepresented as universal. |
| cost.tenYearTotalUsd | A single ten-year total cannot be calculated honestly because the record combines two replacement schedules and multiple pack-specific prices without one family street price; no arithmetic was manufactured. |
| cost.wasteRatio | PUR's faucet and pitcher performance sheets publish no wastewater ratio for these non-RO cartridges. |
| cost.warranty | The captured product, support, and performance-sheet sources did not state a cartridge warranty term that could be tied to both variants. |
| cost.moneyBackGuarantee | The captured PUR pages did not publish a dated money-back guarantee applying to both replacement-filter variants. |
| install.difficulty | PUR publishes owner-performed replacement steps but no standardized easy/moderate/hard rating common to both cartridge forms. |
| install.estimatedHours | PUR's official replacement instructions do not publish an installation-time estimate. |
| install.video | The official support pages exposed a pitcher setup video, but no single opened video covered both the RF-9999 faucet and CRF-950Z/PPF951K pitcher variants in this combined record. |
| trackRecord.recallsAndLitigation | The CPSC query returned no PUR water-filter results, but it does not establish the absence of litigation; no source with complete recall-and-litigation coverage for this combined family was obtained. |
| seo.verification | The independent verification loop has not run; that later stage stamps this field. |
Every source behind this page
- Brand officialaccessed: 2026-08-30https://www.pur.com/shop/replacement-filters/pur-plus-faucet-filter/
- PUR currently publishes RF-9999 as a purchasable faucet replacement filter
- Brand officialaccessed: 2026-08-30https://www.pur.com/shop/replacement-filters/pur-plus-pitcher-filter/
- PUR currently publishes PPF951K as a purchasable pitcher and dispenser replacement filter
- Manufacturer datasheetaccessed: 2026-08-30https://www.pur.com/wp-content/uploads/NEW-PDS_RF9999_FM_28OCT25.pdf
- RF-9999 compatible faucet-unit model list
- RF-9999 faucet-host scope, 20–100 psig range, and unsafe-water warning
- RF-9999 performance sheet says PUR does not filter microbes
- RF-9999 performance sheet says the faucet filter is not intended to purify water
- RF-9999 faucet systems have a 20–100 psig working-pressure range
- RF-9999 minimum and maximum working pressure
- RF-9999 minimum and maximum usable water temperature
- RF-9999 microbe limitation and unsafe-water warning
- Manufacturer datasheetaccessed: 2026-08-30https://www.pur.com/wp-content/uploads/PUR_PDS_Pitcher_Filters_PPF951K.pdf
- PPF951K compatible pitcher and dispenser model list
- PPF951K pitcher/dispenser scope and unsafe-water warning
- PPF951K performance sheet says PUR does not filter microbes
- PPF951K performance sheet says the pitcher filter is not intended to purify water
- PPF951K minimum and maximum usable water temperature
- PPF951K microbe limitation and unsafe-water warning
- NSF listingaccessed: 2026-08-30https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=PUR+CRF%2D950Z&hdModlStd=ModlStd&
- CRF-950Z replacement-element listing says it is for use in all pour-throughs and dispensers
- NSF listing names the OEM PUR CRF-950Z element and its pour-through/dispenser scope
- Brand officialaccessed: 2026-08-30https://www.pur.com/pur_support_filters/
- RF-9999 is the faucet cartridge and has a 100-gallon or three-month change interval
- PUR pitcher cartridges have a 40-gallon or two-month change interval
- Separate faucet and pitcher replacement-filter identities, fit, and schedules
- Official cartridge replacement instructions are written for the owner to perform
- Faucet filters are changed every three months or 100 gallons
- Pitcher filters are changed every two months or 40 gallons
- Official twist-in cartridge replacement steps specify no tools
- Official faucet and pitcher replacement instructions and flushing steps
- RF-9999 replacement, flushing, and three-month maintenance instructions
- Pitcher replacement and two-month maintenance interval
- RF-9999 replacement interval and initial flush instruction
- PUR separates faucet and pitcher replacement-filter compatibility
- Brand officialaccessed: 2026-08-30https://www.pur.com/pur_support_pitchers/
- CRF950Z is identified as a PUR PLUS pitcher filter
- PUR PLUS pitcher filter preparation and filter-light reset instructions
- NSF listingaccessed: 2026-08-30https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=PUR+RF%2D9999&hdModlStd=ModlStd&
- NSF listing names the OEM PUR RF-9999 element within listed faucet systems
- IAPMO listingaccessed: 2026-08-30https://myplc.iapmo.org/certificate#/29904
- IAPMO R&T listing W-29904 names RF-9999 and PPF951K within their published host scopes
- WQA listingaccessed: 2026-08-30https://find.wqa.org/find-products/ctl/detail/mid/1054/cid/kaz_usa_inc/sid/1/keyword/rf-9999
- WQA component listing names PUR RF-9999x
- WQA listingaccessed: 2026-08-30https://find.wqa.org/find-products/ctl/detail/mid/1054/cid/kaz_usa_inc/sid/1/keyword/ppf951k
- WQA component listing names PUR PPF951Kx
Cite this page
TapWaterData Editorial. "PUR Water Filter Replacement: Fit & Cert Check." TapWaterData, verified 2026-08-30. https://www.tapwaterdata.com/filters/brand/pur/replacement-filters
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