GE Appliances FTHLM
- Whole-house
- Point of entry
- City water
- Replacement element
- Listed
$54.96as of 2026-09-02
Secondary sourceVerified 2026-09-02Retailer listing
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Our verdict on the GE Appliances FTHLM
The GE FTHLM (the Premium tier of GE's three-tier FTHLM/FTHTM/FTHPM whole-house replacement filter family for the GXWH50M and GXWH70M systems) is a $54.96, 0.5-micron carbon-block cartridge rated for 15,000 gallons or 3 months, but as of 2026-09-02 no NSF, IAPMO, or WQA listing certifies its marketed lead-reduction claim -- IAPMO R&T's active NSF/ANSI 42 file (W-9755) lists FTHLM only as a material-safety-certified component.[1][2]
Best for
- Owners of a GE GXWH50M or GXWH70M whole-house system whose Premium-tier cartridge is due for its 3-month/15,000-gallon change and who are comfortable relying on GE's own marketed sediment, sand, chlorine-taste-and-odor and lead claims rather than an independently certified performance listing for those contaminants.
Not for
- Buyers choosing FTHLM specifically because they believe its lead-reduction claim is independently certified -- IAPMO R&T's file W-9755 lists FTHLM only as a 'material safety' certified component, and no NSF, IAPMO, or WQA listing found (as of 2026-09-02) certifies a lead-reduction or any other contaminant-reduction performance claim for FTHLM specifically.
- Any GE whole-house host other than GXWH50M or GXWH70M -- the manufacturer/retailer listing names only these two compatible systems, and does not extend to GE's other whole-house or refrigerator/undersink SmartWater cartridge lines.
Secondary sourceVerified 2026-09-02IAPMO listingRetailer listing
Which models the GE Appliances FTHLM fits
The GE Appliances FTHLM fits the 2 models listed below, verified 2026-09-02.[1][2]
| Model | Notes |
|---|---|
| GXWH50M | GE whole-house filtration system using the tool-free FTH-series cartridges. |
| GXWH70M | GE's WiFi-connected 'Smart Whole House Leak Detection & Water Filtration System.' GE's own product page states this specific model is no longer being manufactured, though the FTHLM cartridge itself remains actively sold and restocked on Amazon. |
Secondary sourceVerified 2026-09-02Retailer listingBrand official
Certification check: GE Appliances FTHLM
Listed in the IAPMO R&T directory as of 2026-09-02. The listed claims have not been recorded.
| Directory | Result | Listing |
|---|---|---|
| NSF | No listing found (checked 2026-09-02) | View listing |
| IAPMO R&T | Listing found (checked 2026-09-02) | View listing |
| WQA | No listing found (checked 2026-09-02) | View listing |
Claimed vs. certified: GE Appliances FTHLM
| Contaminant | Status | Third-party listing | What the brand says |
|---|---|---|---|
| Chlorine taste and odor | Marketed only | No entry |
|
| Lead | Marketed only | No entry |
|
| Particulate (0.5 micron) | Marketed only | No entry |
|
| Sand | Marketed only | No entry |
|
| Sediment | Marketed only | No entry |
|
| Soil | Marketed only | No entry |
|
How long the GE Appliances FTHLM lasts, and what it costs a year
The GE Appliances FTHLM is rated for 15,000 gallons or 3 months, verified 2026-09-02. Replacing it on that schedule costs $219.84 a year, verified 2026-09-02.
Cost per year
| Element | Replace | Cost per year |
|---|---|---|
| FTHLM | every 3 months, or every 15,000 gallons | $219.84 |
| Total per year | $219.84 | |
Secondary sourceVerified 2026-09-02Retailer listing
What the GE Appliances FTHLM does not do
FTHLM fits only GE's GXWH50M and GXWH70M whole-house systems; the manufacturer/retailer listing names no other compatible host, so it is not described as fitting any other GE whole-house system or GE's separate refrigerator or undersink SmartWater cartridges. The GE Appliances FTHLM's recorded operating limits are feed water pressure at least 20 psi and up to 120 psi, feed water temperature at least 40 F and up to 100 F, filtered water flow up to 12 gpm, verified 2026-09-02.
FTHLM fits only GE's GXWH50M and GXWH70M whole-house systems; the manufacturer/retailer listing names no other compatible host, so it is not described as fitting any other GE whole-house system or GE's separate refrigerator or undersink SmartWater cartridges.[1]
Secondary sourceVerified 2026-09-02Retailer listing
IAPMO R&T's active NSF/ANSI 42 listing (file W-9755, checked 2026-09-02) lists FTHLM only as a 'material safety' certified component; no NSF, IAPMO, or WQA listing found as of 2026-09-02 certifies a lead-reduction, or any other contaminant-reduction, performance claim specifically for FTHLM, even though GE's own marketing describes the cartridge as reducing lead.[1]
Primary sourceVerified 2026-09-02IAPMO listing
Operating limits
| Parameter | Limit | What it means |
|---|---|---|
| feed water pressure | at least 20 psi and up to 120 psi[1] | Host-system (GXWH50M/GXWH70M) rated operating pressure through which FTHLM filters; GE's spec page states '25 Min - 125 Max' but both of GE's own technical documents for this host -- the Installation Instructions and the Performance Data Sheet -- state 20-120 PSI (1.4-8.2 bar), so the datasheet figure is used here per the trust order in favor of the marketing spec table. Separately, the Performance Data Sheet rates FTHLM's own pressure drop at 25 PSI at 4 gal/min, roughly 3x the 8-9 PSI drop of the FTHPM/FTHTM tiers -- the Premium tier's most consequential practical limitation. Primary sourceVerified 2026-09-02Manufacturer datasheet |
| feed water temperature | at least 40 F and up to 100 F[1] | Host-system (GXWH70M) rated operating temperature; GE's spec page does not publish a separate cartridge-only rating. Primary sourceVerified 2026-09-02Brand official |
| filtered water flow | up to 12 gpm[1] | GXWH70M host system: 4.0 gpm rated (continuous) flow, 12.0 gpm stated maximum. Primary sourceVerified 2026-09-02Brand official |
Do not buy it for these situations
Water pressureDo not install on a feed-water supply outside the host system's rated 20-120 psi operating range.[1]
Primary sourceVerified 2026-09-02Manufacturer datasheet
How the GE Appliances FTHLM works
The GE Appliances FTHLM treats water in one stage: Activated carbon, verified 2026-09-02.[1]
| Stage | Method | Media | Micron rating |
|---|---|---|---|
| 1 | Activated carbon | Carbon block | 0.5 µm |
Secondary sourceVerified 2026-09-02Retailer listing
Fit and sizing: GE Appliances FTHLM
The GE Appliances FTHLM is a whole-house unit installed at the point of entry, for city water. It is rated for 4 gpm of service flow, verified 2026-09-02.
| Form factor | Whole-house |
|---|---|
| Installed at | Point of entry (whole house) |
| Water source | City water |
| Service flow | 4 gpm[1] Primary sourceVerified 2026-09-02Brand official |
| Dimensions | 11.9 in H × 4.1 in W × 3.8 in D[1] Secondary sourceVerified 2026-09-02Retailer listing |
| Operating pressure | 25–125 psi[1] Primary sourceVerified 2026-09-02Brand official |
| Operating temperature | 40–100 F[1] Primary sourceVerified 2026-09-02Brand official |
| Connection size | 0.75 in[1] Primary sourceVerified 2026-09-02Brand official |
What the GE Appliances FTHLM really costs
The GE Appliances FTHLM costs $54.96 as of 2026-09-02. Over ten years, including installation and replacement elements, the recorded total is $2,198.40.
DIY install[1]
Primary sourceVerified 2026-09-02Brand official
Replacement schedule
| Element | Replace | Cost per year |
|---|---|---|
| FTHLM | every 3 months, or every 15,000 gallons | $219.84 |
Secondary sourceVerified 2026-09-02Retailer listing
Ten-year cost of ownership
| Purchase price (as of 2026-09-02) | $54.96 |
|---|---|
| Replacement elements, 10 × $219.84/year | $2,198.40 |
| Sum of the lines above (as of 2026-09-02) | $2,253.36 |
| Recorded ten-year total | $2,198.40 |
Warranty: GE's Limited One-Year Warranty covers defects in materials or workmanship in the manufactured product for one (1) year from the original purchase, but explicitly excludes 'Filter cartridge and batteries after 30 days from date of purchase' -- so the FTHLM cartridge itself is warrantied for 30 days from purchase, not the full one-year term that applies to the rest of the system. (1 years)[1]
Primary sourceVerified 2026-09-02Manufacturer datasheet
Installing the GE Appliances FTHLM
Installing the GE Appliances FTHLM is an easy job of about 80 minutes. DIY install, verified 2026-09-02.
Manufacturer documentation
- Install manual: https://images.salsify.com/image/upload/s--c17n6izx--/d57df96fcb65a2625288aa2cf9b2d40f85c4ea5d.pdf (accessed 2026-09-02)
- Install video: https://www.youtube.com/watch?v=0ea8GAEvd2k (accessed 2026-09-02)
Ongoing maintenance
- Replace the FTHLM cartridge — every 3 months
Secondary sourceVerified 2026-09-02Retailer listing
Track record: GE Appliances FTHLM
Amazon shows 4.8 out of 5 from 319 reviews as of 2026-09-02.
| Source | Rating | Reviews | As of |
|---|---|---|---|
| Amazon | 4.8 out of 5 | 319 | 2026-09-02 |
What owners praise
One reviewer reports the Premium cartridge cleared their household's iron bacteria problem when installed downstream of a water softener.[1]
Secondary sourceVerified 2026-09-02Amazon review
Two reviewers independently describe replacement as easy or quick -- one calls it 'quick and straightforward,' the other 'easy to install' -- and the first of those reviewers separately describes the filters as reliable and worth continuing to buy despite the price.[1]
Secondary sourceVerified 2026-09-02Amazon review
What owners complain about
Value for money draws mixed opinions: Amazon's own tally shows 11 customers mentioning it, split 6 positive to 5 negative, with some owners calling the Premium cartridge worth the price and others noting it isn't the cheapest option.[1]
Secondary sourceVerified 2026-09-02Amazon review
The GE Appliances FTHLM against its family and its rivals
The GE Appliances FTHLM has 2 siblings in its family: FTHTM, FTHPM. Search demand pairs it with ge GXWH40L (twist-off FXHTC cartridge system).
The rest of the family
| Model | What differs |
|---|---|
| FTHTM | Advanced tier: granulated carbon media, 5-micron nominal rating, $27.84 vs. FTHLM's $54.96 as of 2026-09-02; 4.6 stars / 326 ratings. IAPMO R&T file W-9755 lists FTHTM (unlike FTHLM) with an independently certified NSF/ANSI 42 claim of Particulate Class III plus Chlorine, Taste and Odor reduction at 4 gpm / 25,000 gallons for the same GXWH50M/GXWH70M hosts. |
| FTHPM | Basic tier: polypropylene media, 30-micron nominal rating, $17.78; 4.6 stars / 182 ratings. IAPMO R&T file W-9755 lists FTHPM (unlike FTHLM) with an independently certified NSF/ANSI 42 Particulate Class V claim at 4 gpm for the same GXWH50M/GXWH70M hosts, but no chlorine/taste/odor claim. |
Cross-shopped against
| Rival | Why this pair |
|---|---|
| ge GXWH40L (twist-off FXHTC cartridge system) | Same manufacturer's older, twist-off-canister whole-house prefilter line already in this database; relevant to a buyer comparing GE's tool-free FTH-series systems against its simpler FXHTC-cartridge systems. |
The GE Appliances FTHLM and cartridges sold as compatible
IAPMO R&T file W-9755 (NSF/ANSI 42-2022, Active as of 2026-09-02) certifies FTHTM and FTHPM for independent particulate/chlorine-taste-and-odor reduction claims when installed in the GXWH50M or GXWH70M host. FTHLM, the Premium, lead-marketed cartridge in the same three-tier family and the primary model of this record, appears in that SAME file only once, in a separate, single-column 'Component' section listing component model numbers (alongside GXWH04F3, UNFCTFBL, FXWTC, FXHSC, FXWSC and FXUSC, each its own row rather than a host/component pairing) with footnote 5: 'This component is certified for material safety only.' No NSF, IAPMO, or WQA listing found as of 2026-09-02 extends a contaminant-reduction performance certification to FTHLM itself; GE's 'reduces lead' marketing claim for FTHLM has no certified counterpart in this record's certified.listedClaims, which is why that array is empty for this record despite an active, found IAPMO listing.[1]
Primary sourceVerified 2026-09-02IAPMO listing
GE Appliances FTHLM questions, answered
What's the difference between the GE FTHLM, FTHTM, and FTHPM whole-house filters?
They are three price/performance tiers of the same GXWH50M/GXWH70M-compatible cartridge family: FTHLM (Premium, $54.96 as of 2026-09-02, carbon block, 0.5 micron), FTHTM (Advanced, $27.84, granulated carbon, 5 micron), and FTHPM (Basic, $17.78, polypropylene, 30 micron). All three share the same 15,000-gallon/3-month rated life, but only FTHTM and FTHPM carry an independently certified NSF/ANSI 42 reduction claim in IAPMO R&T file W-9755 -- FTHLM's listing in that same file covers material safety only.
Does the GE FTHLM whole-house filter actually reduce lead?
Verified health claim
GE markets FTHLM as reducing lead, but as of 2026-09-02 no NSF, IAPMO, or WQA directory lists an independently certified lead-reduction performance claim for FTHLM specifically -- IAPMO R&T's active NSF/ANSI 42 file (W-9755) lists it only as a 'material safety' certified component, not as tested for contaminant reduction. The lower-priced FTHTM and FTHPM tiers in the same family do carry certified (though not lead-specific) reduction claims in that same file.
Which GE whole-house systems use the FTHLM filter?
FTHLM fits GE's GXWH50M and GXWH70M whole-house filtration systems. GXWH70M is GE's WiFi-connected 'Smart Whole House Leak Detection & Water Filtration System'; GE's own product page lists that specific model as no longer being manufactured, though FTHLM itself remains actively sold and restocked on Amazon.
How often should I replace the GE FTHLM filter?
GE rates FTHLM for 15,000 gallons or 3 months, whichever comes first. At $54.96 per cartridge (as of 2026-09-02) and four replacements a year, that works out to about $219.84 a year in filter cost alone.
Sources: [1]
Sources and data report: GE Appliances FTHLM
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 |
|---|---|
| certified.certIndexKey | No matching entry for FTHLM (manufacturer slug or model id) was found in this repo's own certification index corpus (data/certifications/by-brand/); this is a fact about our indexed corpus, not evidence against certification, and is unrelated to the live liveCertChecks above. |
| fit.bathroomsServed | Neither GE's GXWH70M spec page nor the FTHLM Amazon listing publishes a bathrooms-served rating for this whole-house prefilter; GE rates it by gpm flow, not fixture count. |
| fit.householdSize | Not published by GE or any captured retailer source for FTHLM or its GXWH50M/GXWH70M hosts. |
| fit.roOutputGpd | Not applicable -- FTHLM is a carbon-block prefilter, not a reverse-osmosis system, so no RO membrane output figure exists. |
| fit.roTankCapacity | Not applicable -- FTHLM is not a reverse-osmosis system and has no storage tank. |
| fit.requiresElectricity | No source explicitly states whether the FTHLM cartridge itself requires electricity. The GXWH70M host system's leak-detection and WiFi-alert features do require power, but no captured source distinguishes the passive filter cartridge's own power requirement from the connected housing's requirement, and asserting one without a direct statement would be a guess. |
| fit.requiresDrain | No source explicitly states a drain requirement for FTHLM or its GXWH50M/GXWH70M hosts; captured materials describe push-to-connect plumbing installation but do not address drain routing. |
| cost.msrp | GE does not sell FTHLM directly through geappliances.com, and geapplianceparts.com (where the sibling ge-xwfe/ge-whole-house records sourced MSRP) returned a Cloudflare bot-detection challenge on every attempt this pass, so no manufacturer list price distinct from the Amazon street price could be established. |
| cost.wasteRatio | Not applicable -- FTHLM is not a reverse-osmosis system and produces no drain waste; GE publishes no waste ratio for it. |
| cost.moneyBackGuarantee | No money-back guarantee was found on the Amazon listing or the GXWH70M brand page for this cartridge. |
| seo.verification | The independent verification loop has not run; this field is intentionally reserved for its verification stamp. |
Every source behind this page
- Retailer listingaccessed: 2026-09-02https://www.amazon.com/dp/B08JHZGLG9
- FTHLM is in stock, actively sold, '500+ bought in past month', with 319 current ratings as of 2026-09-02
- 'Guaranteed fit - Compatible with select GE Whole Home Filtration Systems, including GXWH50M and GXWH70M'
- Additional details table: 'Compatible Water Purifier Models GE GXWH50M, GE GXWH70M'
- Tier comparison table: 'Filter Capacity (gallons) 15,000' for FTHLM
- 'Three-month filter life - For best filtration results, filters should be replaced every three months or 15,000 gallons.'
- Tier comparison table: 'Filter Life 3 months' for FTHLM
- Title: 'Replace Every 3 Months for Best Results'
- $54.96 price, 15,000-gallon/3-month rated life, 0.5-micron rating, 'Guaranteed fit' with GXWH50M and GXWH70M only
- Brand marketing bullet: 'Reduce lead using this premium cartridge'
- Tier comparison table: FTHLM 'Filter Type: Carbon block', 'Particulate Reduction: 0.5 micron'
- 'Item Dimensions D x W x H 3.8"D x 4.1"W x 11.9"H'
- 'Price, product page $54.96'
- $54.96 unit price; 'Lasts three months or 15,000 gallons before needing to be replaced'; annualUsd = $54.96 x 4 replacements/year = $219.84
- Reviewer: 'installation is quick and straightforward'
- 'Lasts three months or 15,000 gallons before needing to be replaced'
- Reviewer: 'Works fantastic at getting rid of our iron bacteria. Have the filter housing in place after the water softener.'
- Amazon AI review summary: 'Customers find the water filter performs well, with one mentioning it effectively removes iron bacteria.'
- One reviewer (June 28, 2026): 'installation is quick and straightforward'
- Another reviewer (March 29, 2026): 'Easy to install, durable and the cost to have it delivered as well.'
- The first reviewer also states: 'These filters aren't the cheapest option, but they've been reliable, easy to replace, and have consistently performed well for our household. I'll definitely continue purchasing them.'
- Amazon AI review summary: 'Customers have mixed opinions about the filter's value for money, with some finding it worth the price while others note it isn't the cheapest option.'
- Amazon review tally: '11 customers mention value for money, 6 positive, 5 negative'
- Tier comparison table: prices, filter type, micron rating, capacity, filter life for FTHLM/FTHTM/FTHPM
- $54.96 unit price
- Brand officialaccessed: 2026-09-02https://www.geappliances.com/appliance/GE-Smart-Whole-House-Leak-Detection-Water-Filtration-System-GXWH70M
- GXWH70M accessories list: 'Filters FTHLM (Premium) FTHTM (Advanced) FTHPM (Basic), All sold separately'
- 'This model is no longer being manufactured'
- Specs & Details: 'Feed Water Temperature 40-100 F'
- Specs & Details: 'Max. Filtered Water Flow (gpm) 12.0', 'Rated Filtered Water Flow (gpm) 4.0'
- Specs & Details: 'Rated Filtered Water Flow (gpm) 4.0' for the GXWH70M host system this cartridge is installed in
- Specs & Details: 'Feed Water Pressure (psi) 25 Min - 125 Max.'
- Specs & Details: 'Port Threads 3/4" Push-To-Connect', 'Plumbing Connections 3/4" (1" adapter sold separately)'
- 'Easy-change Filter: Quickly change your filter without using tools'
- 'Push-to-Connect Fittings...replace with filters without using tools'
- IAPMO listingaccessed: 2026-09-02https://myplc.iapmo.org/certificate#/18905
- IAPMO R&T file W-9755 (NSF/ANSI 42-2022, Active) lists FTHLM once, in a separate 'Component' product-type section -- a single-column table of component model numbers (GXWH04F3, UNFCTFBL, FTHLM, FXWTC, FXHSC, FXWSC, FXUSC, each its own row, not a host/component pairing) -- footnoted 'This component is certified for material safety only.' No reduction-claim row exists for FTHLM anywhere in the file, unlike FTHTM and FTHPM which each carry a reduction-claim row under GXWH50M and GXWH70M.
- FTHLM appears once in file W-9755, in the Component section -- a single-column table of component model numbers (GXWH04F3, UNFCTFBL, FTHLM, FXWTC, FXHSC, FXWSC, FXUSC, each its own row, not a host/component pairing) -- footnoted 'This component is certified for material safety only'; no separate reduction-claim row for FTHLM exists in the file
- W-9755 models table lists GXWH50M and GXWH70M each paired with FTHPM (Particulate Class V) and FTHTM (Particulate Class III, Chlorine, Taste and Odor; 25,000 gal at 4 gpm)
- W-9755 Component section lists FTHLM (alongside GXWH04F3 and five other component model numbers, each its own row in a single-column table) footnoted 'This component is certified for material safety only', with no reduction claim attached
- FTHTM and FTHPM carry reduction-claim rows under GXWH50M/GXWH70M; FTHLM appears only as a material-safety-only component elsewhere in the file
- FTHLM appears once in file W-9755, in a separate 'Component' product-type section -- a single-column table of component model numbers (GXWH04F3, UNFCTFBL, FTHLM, FXWTC, FXHSC, FXWSC, FXUSC, each its own row, not a host/component pairing) -- footnoted 'This component is certified for material safety only'
- Manufacturer datasheetaccessed: 2026-09-02https://images.salsify.com/image/upload/s--5AhFcORB--/4c9a17d1cdee8410e84ee9f46e4c26f785a72b18.pdf
- Application Guidelines/Water Supply Parameters: 'Pressure 20-120 PSI (1.4 - 8.2 bar)'
- 'FTHLM Cartridge Pressure Drop of 25 PSI at 4 gal/min', vs. 'FTHPM Cartridge – Pressure Drop of 8 PSI at 4 gal/min' and 'FTHTM Cartridge – Pressure Drop of 9 PSI at 4 gal/min'
- 'LIMITED ONE-YEAR WARRANTY ... What does this warranty not cover? ... Filter cartridge and batteries after 30 days from date of purchase.'
- 'For how long after the original purchase? -- One (1) year.'
- INSTALLATION INSTRUCTIONS step 7: 'Open faucet for 10 minutes (40 gallons) to flush system, wait 1 hour and repeat 10 minute (40 gallon flush).' 10 + 60 + 10 = 80 minutes of specified elapsed time for the mandatory flush/wait cycle alone, not counting steps 1-6 (relieve pressure, open housing, twist out old filter, wash housing, lubricate O-ring, seat new filter, reassemble), which carry no separately published duration.
- Manufacturer datasheetaccessed: 2026-09-02https://images.salsify.com/image/upload/s--c17n6izx--/d57df96fcb65a2625288aa2cf9b2d40f85c4ea5d.pdf
- GXWH50M/GXWH70M 'Installation Instructions' / 'Use & Care Manual' (1,648,825-byte PDF, linked as 'Use & Care Manual', 'Owners Manual' and 'Installation Instructions' from the GXWH70M brand page's Manuals & Downloads section): safety precautions, proper installation, rated service flow (4 gpm/15 lpm), and a 'Filter Cartridge Replacement' section covering the FTHLM/FTHTM/FTHPM cartridges installed in this host system
- Brand officialaccessed: 2026-09-02https://www.youtube.com/watch?v=0ea8GAEvd2k
- GE Appliances' official YouTube video (title via oEmbed: 'Installation - Smart Whole House Water Filtration System'), embedded on the GXWH70M brand page under the 'Easy Install' play button
- Government agencyaccessed: 2026-09-02https://www.cpsc.gov/search?search_api_fulltext=GE%20FTHLM
- CPSC full-text search for 'GE FTHLM' returned no results
- Government agencyaccessed: 2026-09-02https://www.cpsc.gov/search?search_api_fulltext=GE%20GXWH70M
- CPSC full-text search for 'GE GXWH70M' returned no results
- NSF listingaccessed: 2026-09-02https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=FTHLM&hdModlStd=ModlStd&
- NSF directory search for 'FTHLM' returns no matching products
- WQA listingaccessed: 2026-09-02https://find.wqa.org/find-products#/keyword/FTHLM
- WQA directory search for 'FTHLM' returns no results
Cite this page
TapWaterData Editorial. "GE Smart Water Filter (FTHLM) Review: Cost & Cert." TapWaterData, verified 2026-09-02. https://www.tapwaterdata.com/filters/brand/ge/smart-water-filter
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