Parts
Model number to replacement part: which cartridge, membrane or lamp fits, on what interval, and which cross-fit alternatives exist.
You already own the equipment. These pages give the exact replacement part number, the interval it is changed on, and the alternatives that fit the same housing.
Refrigerator filters 19 pages
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LG LT600P Water Filter: Part Numbers and Cross-Fits
LG LT600P (5231JA2006A / 5231JA2006F) is rated 300 gallons or 6 months; NSF lists it at 0.5 gpm to NSF/ANSI 42 and 53, with lead and cyst reduction.
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GE GSWF Water Filter: Fit, Interval, NSF Cross-Fits
GE GSWF twist-and-lock cartridge: GE says 6 months, prints both 300 and 750 gallons, and has stopped making it. Which cross-fits NSF lists to 42, 53 and 401.
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Frigidaire EPTWFU01 Filter: Specs and Cross-Fits
Frigidaire EPTWFU01 PureSource Ultra II: 125 gal, 0.65 gpm, 6 months, IAPMO R&T certified to NSF/ANSI 42, 53 and 401. NSF-listed cross-fits are 200 gal at 0.5 gpm.
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Whirlpool EDR2RXD1 everydrop Filter 2: Fit and Specs
everydrop Filter 2 EDR2RXD1: 200 gallons or 6 months, NSF/ANSI 42, 53 and 401, 70 contaminants including 99% of microplastics, per Whirlpool's own product page.
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Samsung DA29-00003G Filter: Fit and Cross-Fits
DA29-00003G is Samsung's HAFIN1/EXP cartridge for head DA97-06317A, not the 300-gallon HAF-CIN DA29-00020B; the ICEPURE cross-fit lists NSF/ANSI 42.
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LG LT800P Water Filter: Part Numbers and Cross-Fits
LG LT800P (ADQ73613401, ADQ73613408) is rated 200 gallons or 6 months, NSF/ANSI 42 and 53 per LG's page; ICEPURE's cross-fit lists 42 and 372, not 53.
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Frigidaire WF3CB Replacement: Fit and Cross-Fits
Frigidaire WF3CB is the PureSource3 cartridge. Its NSF-listed cross-fits are rated 300 gal at 0.5 gpm to NSF/ANSI 42; the EPTWFU01 is a different 200 gal element.
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Whirlpool EDR4RXD1 Water Filter: Fit and Cross-Fits
Whirlpool EDR4RXD1 (EveryDrop Filter 4) replaces Maytag UKF8001 and 4396395 per cross-fit makers, rated 300 gallons or 6 months, NSF/ANSI 42 and 372.
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Samsung HAF-QIN/EXP Filter: DA97-17376B Fit, Interval
Samsung lists HAF-QIN/EXP as cartridge DA97-17376B for system DA97-08006C, rated 300 gallons or 6 months, NSF/ANSI 42 and 53 (no 401 on Samsung's page).
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Whirlpool EDR3RXD1 Water Filter: Fit and Cross-Fits
Whirlpool EDR3RXD1 (EveryDrop Filter 3) replaces P1WB2 and, per cross-fit makers, 4396841: 200 gallons or 6 months, 73 contaminants per Whirlpool.
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Kenmore 9081 Water Filter: EveryDrop Cross-Reference
Kenmore 46-9081 is EveryDrop Filter 1 (EDR1RXD1), 46-9083 is Filter 3 (EDR3RXD1), 200 gallons or 6 months each; 46-9930 lists under Filter 1.
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GE XWF vs XWFE Water Filter: Fit, Chip, Cross-Fits
GE XWFE replaces the XWF and fits any GE fridge that names either; GE says 6 months, no gallon figure. Which cross-fits carry the chip.
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GE MWF Water Filter: Fit, Cross-Fits, NSF Listing
GE MWF twist-in cartridge: which GE and Hotpoint fridges take it, and which cross-fits NSF lists to 42, 53 and 401 at 300 gallons and 0.5 gpm.
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Frigidaire ULTRAWF Filter: Fit, Cross-Fits, WF3CB
Frigidaire ULTRAWF fits the PureSource Ultra push-twist housing. Cross-fits list NSF/ANSI 42 at 300 gal, 0.5 gpm. Not a WF3CB or EPTWFU01 fit.
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Whirlpool EDR1RXD1 Water Filter: Fit and Cross-Fits
Whirlpool EDR1RXD1 (EveryDrop Filter 1) replaces W10295370A: 200 gallons or 6 months, NSF/ANSI 42, 53 and 401 per Whirlpool, and the cross-fits.
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Samsung DA29-00020B Filter: Fit and Cross-Fits
Samsung rates the DA29-00020B (HAF-CIN/EXP) at 300 gallons or 6 months and lists it to NSF/ANSI 42 and 53; fits RF22 to RF28 French-door models.
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LG LT700P Water Filter: Part Numbers and Cross-Fits
LG LT700P (ADQ36006101) is rated 200 gallons or 6 months, NSF/ANSI 42 and 53 per LG's page, and does not fit an LT1000P (ADQ74793501) housing.
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LG LT1000P Water Filter: Fit, Interval, Cross-Fits
LG LT1000P (ADQ74793501) is rated 200 gallons or 6 months and listed to NSF/ANSI 42, 53 and 401 by LG. It does not fit LT700P refrigerators.
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GE RPWFE Water Filter: Fit, Chip, Cross-Fits
GE RPWFE: 170 gallons or 6 months, NSF/ANSI 42 and 53 per GE's data sheet, plus the RFID chip the RPWF lacks. Which cross-fits carry a chip.
Filters and cartridges 10 pages
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Shower Filter Replacement Cartridge by Model
Aquasana AQ-4100/4105 take AQ-4125 (10,000 gal or 6 months), Culligan WSH-C125 takes WHR-140, Sprite HO2 takes HOC (25,000 gal), SL2 takes SLC, SF100 takes SFC100.
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ZeroWater Filter Compatibility and When to Change
One ZR-017 filter fits every legacy ZeroWater pitcher; the 2025 Culligan ZeroWater line takes ZEROF01. Both makers say replace at a TDS reading of 006.
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PUR Pitcher Filter Compatibility: PPF951K vs PPF900Z
PUR Plus PPF951K (99.7% lead reduction at pH 6.5) and plain PPF900Z fit the same 14 PUR pitchers, replaced every 2 months or 40 gallons per PUR.
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Aquasana AQ-5300 Replacement Filters by Model
Aquasana AQ-5300 takes AQ-C3-R (600 gal), AQ-5300+ takes AQ-C3M-R (800 gal), AQ-5200 takes AQ-C2-R (500 gal), Direct Connect AQ-MF-1-R (784 gal), all 6 months.
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GE Whole House Water Filter Replacement by Housing
GE GXWH40L and GXWH35F take the 10 x 4.5 in FXHSC or FXHTC every 3 months; GXWH04F shares the WS03X10038 O-ring. Which FX cartridge fits which housing.
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Culligan HF-360 and WH-HD200-C Replacement Filters
The Culligan HF-360 takes 10 x 2.5 in cartridges (CW-MF, CW-F, P5); the WH-HD200-C takes 10 x 4.5 in (R50-BBSA, CW5-BBS, RFC-BBSA), 8,000 to 24,000 gallons each.
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20 Inch Big Blue Cartridge Compatibility
Every 20 in Big Blue housing takes a 20 x 4.5 in cartridge: Pentek DGD at 4.50 in, EP-20BB at 4.63 in, 1 to 25 micron. Carbon block runs fatter than sediment media.
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10 Inch Water Filter Cartridge Compatibility
A standard 10 in housing takes any 10 x 2.5 in DOE cartridge: Pentek P5 sediment at 2.38 x 9.88 in, CBC-10 carbon block at 2.88 x 9.75 in, on a #237 O-ring.
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iSpring WGB32B Replacement Filters and Cross-Fits
The iSpring WGB32B takes one FP25B and two FC25B 20 x 4.5 in cartridges, changed every 6-12 months or 100,000 gallons. Pentek DGD and EP-20BB cross-fit.
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Express Water WH300SCKS Replacement Filters
Express Water WH300SCKS takes FLTWH2045S1, FLTWH2045K and FLTWH2045C1 (set FLTWH2045CKS1), 4.5 x 20 in, changed every 6-12 months or 100,000 gallons.
Drinking water 8 pages
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Aquasana AQ-5200 Replacement Filters: AQ-C2-R
Aquasana Claryum 2-Stage AQ-5200 and AQ-6200 take the AQ-C2-R set (AQ-5200R): 500 gallons or 6 months, 0.5 gpm, WQA to NSF/ANSI 42, 53, 401 per Aquasana.
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AquaTru Replacement Filters: Classic and Carafe
AquaTru Classic filters last 6 months/600 gal (Pre/Carbon), 2 years/1,200 gal (RO), 1 year/600 gal (VOC). Carafe filters are rated 300 gal and do not swap.
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Reverse Osmosis Tank Replacement: Fit and Precharge
Standard RO tanks: 1/4 in NPT, 4 gal nominal, about 3.2 gal usable, factory precharge 5 to 10 psi by maker. Which tank fits, and how to swap it.
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Reverse Osmosis Membrane Replacement: 1812 Sizes
A 1812 RO membrane is 11.74 x 1.75 in per DuPont's data sheet: FilmTec TW30-1812, iSpring MC7 and MC1, APEC MEM-ES-50 and Express Water ROM all fit.
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Waterdrop G3P800 Replacement Filters
The Waterdrop G3P800 takes the WD-G3-N1CF (6 months), WD-G3-N3CB (12 months) and WD-G3P800-N2RO membrane (24 months). Only the membrane differs across the G3 line.
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iSpring RCC7 Replacement Filters by Stage
iSpring RCC7 stages take FP15, FG15, FC15 (10 in, 5 micron) every 6 months, the MC7 membrane every 2-3 years, FT15 yearly. F7-GAC fits RCC7, F9K fits RCC7AK.
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Brita Filter Compatibility: Standard, Elite, Stream
Brita Standard (OB03) and Elite (OB06) fit every Brita pitcher except Stream and interchange: 40 gal vs 120 gal. Stream (OB05) fits only 3 models.
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APEC ROES-50 Replacement Filters and Cross-Fits
The APEC ROES-50 takes FILTER-SET-ES (stages 1-3, every 6-12 months) and a MEM-ES-50 membrane every 2-4 years. The ROES-PH75 needs the ESPH sets, not the ES ones.
City water 4 pages
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Brita Faucet Filter Replacement: FR-200 Fit Guide
Every Brita faucet mount (FF-100/SAFF-100, Elite or Elite Advanced) takes the FR-200: 100 gallons, 0.58 gpm, WQA-certified to NSF/ANSI 42, 53 and 401.
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PUR Faucet Filter Replacement: RF9999 vs RF3375
PUR's sheet gives RF9999 and RF3375 one rating: 100 gallons, 0.52 gpm, NSF/ANSI 42, 53 and 401, and one fit list of 24 mounts from FM2500V to PFM400H.
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Waterdrop 10UA, 15UA, 10UB Replacement Filters
Waterdrop 10UA and 10UB take the WD-RF10 (11,000 gallons or 12 months); the 15UA takes the WD-RF15 (19,000 gallons or 24 months). UF housings differ.
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Aquasana Rhino EQ-1000 Replacement Filters
The Aquasana Rhino EQ-1000 takes an EQ-304 pre-filter every 2 months, an EQ-PFC.35 post-filter every 6 months and an EQ-1000R tank at 1,000,000 gallons or 10 years.
Water softeners 3 pages
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Water softener resin: 8% crosslink guide
Refill 1 cu ft of 8% crosslink cation resin per rated cubic foot (ResinTech CG8, Purolite C100E). ResinTech's highly crosslinked CNS10 only behind a chlorine feed.
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Fleck 5600SXT Parts and Pentair Part Numbers
Fleck 5600SXT parts by Pentair number: seal kit 60125, bypass 60049, turbine meter 60626, injector 10913-x by tank size, per service manual 42684.
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Whirlpool WHES30 and WHES40 Parts and Error Codes
Whirlpool WHES30/WHES40 parts by number: seal kit 7129716, nozzle and venturi 7398705 (WHES40) or 7398674 (WHES30), brine valve 7381180, and what Err1 to Err5 mean.
Well water 3 pages
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Well Pump Pressure Switch Replacement 30-50, 40-60
Read the pressure pair off the old switch. Square D Pumptrol FSG2J20 is 20-40, FSG2J21 is 30-50, FSG2J24 is 40-60 psi; add M4 for a low-pressure cutoff.
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Well Pressure Tank Cross-Reference by Model
Amtrol WX-202, Water Worker HT-20B, Goulds V60, Flexcon WR 60 and Red Lion RL20A share the 20-gallon, 1 in slot. Drawdown at 40/60 psi: 5.3 to 5.9 gal.
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Viqua UV Lamp Cross-Reference: S330RL to 602806
Viqua S463RL fits the S5Q-PA, S330RL the S2Q-PA, 602805 the D4, 602806 the E4. Each lamp is rated 9,000 hours, changed yearly; sleeve cleaned every 12 months.
Reverse osmosis 2 pages
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DREO Reverse Osmosis Replacement Filters by Model
DREO RO Water Filter 112 takes one 265 gallon combo cartridge; the 511 takes DR-KPA018 (about 1,050 gallons) or DR-KPA017 plus the 6 month DR-KPA016.
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Bluevua RO100ROPOT Replacement Filters by Stage
Bluevua RO100ROPOT and RO100ROPOT-UV take the same PP, CTO, RO and PCF filters: 12 months for PP, CTO and PCF, 12-24 months for the RO membrane.