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Find the exact OEM filter for your Master Spas hot tub or swim spa — every series, every model, every year. Master Spas has changed its filter platform several times since the 1990s; this guide maps each one, checked against Master Spas documentation and our own parts catalog before we publish it.
Which Master Spas line is your spa?
Pick your model
Which year or configuration?
Your serial number is on a plate near the filter area, on the spa system pack, or on the frame behind the front skirt panel. On most spas built since 2009, the first two digits are the model year (2212345 = 2022). Getaway serials start with “R”, swim spas with “H”, and 2008-and-earlier spas with “M”. Full details in How to identify your model — or send us the serial number and a photo of your filters and we’ll match it for you.
Fitment chart last updated .
Hot Tubs
Most Twilight Series hot tubs run three filters: an outer skimming filter with the EcoPur Charge mineral core locked inside, plus a stand-alone filter in a second housing. The TS 120 and TS 240 are the exception — they use a TeleWeir cartridge system instead. For 2017–2024 spas that means the X268546 outer, X268532 EcoPur Charge, and X268543 stand-alone. The 2025 platform moved to new cartridges (X268566/X268567) that do not interchange with earlier years.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| All models except TS 120 / TS 240TS 6.1, TS 6.2, TS 7.1, TS 7.15, TS 7.2, TS 7.25, TS 8.1, TS 8.2, TS 8.25, TS 8.3, TS 8.35, TS 67.15, TS 67.25, TS 87.3, TS MP, TS FitOriginal X268551/X268512 outer, X268511 EcoPur insert and X268365 stand-alone are discontinued; these are Master Spas' current replacements. Stand-alone filter fits the second (smaller-hose) filter position on dual-filter models only. TS x.1 and x.15 models (2009-2010) were documented without the EcoPur mineral insert - if your spa has no inner core, ask us before ordering. | 2009-2016 | X268546 | 1 | X268532 | 1 | X268543 ×1 | Complete set |
| TS 120 / TS 240TS 120, TS 240Original TeleWeir set (X268514/X268545 outer + X268513 EcoPur) is discontinued; X268548 + X268532 is the factory replacement. Some 2010-2014 TS 120/240 configurations used the 13-inch X268553 PWW50L TeleWeir cartridge instead - measure your old filter or ask us. | 2010-2016 | X268548 | 1 | X268532 | 1 | — | Complete set |
| All models except TS 240TS 6, TS 6.2, TS 7.2, TS 7.25, TS 8.2, TS 8.25, TS 8.3, TS 8.35, TS 67.25, TS 87.3 | 2017-2024 | X268546 | 1 | X268532 | 1 | X268543 ×1 | Complete set |
| TS 240 / TS 120 (TeleWeir)TS 240, TS 120 | 2017-2024 | X268548 | 1 | X268532 | 1 | — | Complete set |
| New platform - 3-filter configurationTS 6.2, TS 7.2, TS 7.25, TS 8.2, TS 8.25, TS 67.252025 filters are NOT interchangeable with earlier years. If your spa has only two filters, see the 2-filter configuration row. 2025 'Heritage' Twilight models built on the legacy platform continue with the 2017-2024 filters above - ask us if unsure. Late-production X268560 units are stamped X268572. | 2025-current (3-filter) | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
| New platform - 2-filter configurationTS 6.2, TS 7.2, TS 7.25, TS 8.2, TS 8.25, TS 67.25For 2025+ spas with two filters (outer + EcoPur, no stand-alone bay): the X268567 outer is 7.5 in long vs 9 in for X268566. Count your filter housings or measure the old outer before ordering - or ask us. | 2025-current (2-filter) | X268567 | 1 | X268532 | 1 | — | Complete set |
| TS 240X (TeleWeir)X268568 is the 2025 TeleWeir cartridge (also used on 2025 Clarity models - the linked set contains exactly this row's two parts). | 2025-current | X268568 | 1 | X268532 | 1 | — | Complete set |
Michael Phelps Legend Series
Legend Series spas — badged LSX, and MPL from 2015 to 2024 — have used four distinct filter systems since 1996. The big one to know: most 2004–2013 Legends have two filter wells, so you need two outer filters and two EcoPur cores per change. From 2014 on, the series shares the Twilight-style three-filter setup (X268546 + X268532 + X268543). Spas from the black-standpipe era convert to the current cartridges — just remove the old standpipe and lid.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| Legend Series (legacy LSX)70 sq ft cartridge, pre-EcoPur era (also used on Down East Spas of the same years). | 1996-2000 | X268500 | 1 | — | — | — | Shop filter |
| Legend Series (Eco Pur era)X268057 old-style Eco Pur fits all 2002-2003 Master Spas models; it pairs with a micro outer filter whose part number varies - contact us to match it. Some models used the X298600 macro flat filter or the X268080 40 sq ft cartridge instead; 2001 fitment needs confirmation. | 2001-2003 | — | — | X268057 | 1 | — | Shop filter |
| LSX 557 / 700 / 800 / 825 / 850 / 1000 / 1050LSX 557, LSX 700, LSX 800, LSX 825, LSX 850, LSX 1000, LSX 1050Most Legend spas of this era have TWO filter wells - order two of each. Original X268552/X268325 outer + X268056 Eco Pur + black standpipe system is discontinued; remove the black standpipe and lid when installing the new-style set. 2009-2013 spas with a long canister filter in the smaller-hose position use the 3-piece Twilight-style set instead - match what you remove. | 2004-2013 | X268546 | 2 | X268532 | 2 | — | Complete set |
| LSX / MPL 700 / 800 / 900LSX 700, LSX 800, LSX 900, MPL 700, MPL 800, MPL 900Whichever original outer your spa has (X268533 or X268551), X268546 is the factory replacement, and X268532 replaces every earlier Eco Pur cartridge. If your spa has two skimmer wells, match the number of filters you remove. | 2014-2016 | X268546 | 1 | X268532 | 1 | X268543 ×1 | Complete set |
| MPL / LSX 700 / 800 / 850 / 900MPL 700, MPL 800, MPL 850, MPL 900, LSX 700, LSX 800, LSX 850, LSX 900 | 2017-2024 | X268546 | 1 | X268532 | 1 | X268543 ×1 | Complete set |
| LSX 700 / 800 / 850 / 900 - 3-filter configurationLSX 700, LSX 800, LSX 850, LSX 9002025 filters are NOT interchangeable with earlier years. If your spa has only two filters, see the 2-filter configuration row. Late-production X268560 units are stamped X268572. | 2025-current (3-filter) | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
| LSX 700 / 800 / 850 / 900 - 2-filter configurationLSX 700, LSX 800, LSX 850, LSX 900For 2025+ spas with two filters (outer + EcoPur, no stand-alone bay): the X268567 outer is 7.5 in long vs 9 in for X268566. Count your filter housings or measure the old outer before ordering - or ask us. | 2025-current (2-filter) | X268567 | 1 | X268532 | 1 | — | Complete set |
| LSX 302025 Legend platform: X268566 outer + X268532 EcoPur Charge + X268560 stand-alone. As with the other 2025 Legend spas, some builds use the shorter 7.5 in X268567 outer instead of X268566 - count your housings or confirm outer length before ordering. | 2025-current | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
Healthy Living & LH Hot Tubs
Healthy Living hot tubs (2013–2021) started on the TeleWeir system and moved to the EcoPur Charge combo in 2017. Either way, today they take the same two parts: the X268548 outer with the X268532 EcoPur Charge core. The current LH Spas line (L5–S7, 2025+) uses the new 2025 filter platform — fitment varies by model, so check with us first.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| All Healthy Living modelsHL7, HL8Original TeleWeir filters (X268514/X268545 + X268513 Eco Pur, also X268544/X268520 short TeleWeir) are discontinued; X268548 + X268532 is the factory replacement. | 2013-2016 | X268548 | 1 | X268532 | 1 | — | Complete set |
| All Healthy Living modelsHL7, HL 7.5, HL8, HL 8.5, HL8 DL, HL 616L, HL 620L, HL 628, HL 628L, HL 630LFactory fitment tables list 2018-2020 for this combo; the 2017 EcoPur Charge transition and the line's 2021 final year come from the owner's manuals. | 2017-2021 | X268548 | 1 | X268532 | 1 | — | Complete set |
| L5 / L6 / L7 / S6 / S7LH L5, LH L6, LH L7, LH S6, LH S7The official part finder lists a single cartridge for the LH / Living Healthy line - X268543 for 2023-2024 LH6/LH7 and X268560 for 2025-2026 LH6/LH7 - with no separate outer filter or EcoPur core. Your L5 / L7 / S6 / S7 are not individually listed, so send us your exact model or a photo of your filter and we will match it before you order. | 2025-current | Confirm with us | — | Confirm with us | — | — | Ask us |
Shop all Healthy Living & LH Spas filters → ↑ Use the filter finder
Balance & Precision Hot Tubs
Clarity Spas launched in 2013 with CLS-numbered models; the Balance and Precision names arrived in 2017. Every EcoPur-equipped Clarity through 2024 takes the X268548 outer + X268532 EcoPur Charge pair. The 2025 refresh switched to the X268568 outer with the same EcoPur core. Two early models — the CLS 360 and CLS 415 — used a single plain cartridge with no mineral core.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| CLS 360 / CLS 415CLS 360, CLS 415These two models use a single plain cartridge behind the weir (no EcoPur); the CLS 360 was built through 2014. The oval-tub X268521 PMA20-F2M is the likely cartridge for the CLS 415 - confirm with us before ordering. | 2013-2015 | Confirm with us | — | Confirm with us | — | — | Ask us |
| CLS 524 / 730 / 738 / 855 / 1055 (Eco Pur equipped)CLS 524, CLS 730, CLS 730L, CLS 738, CLS 738L, CLS 855, CLS 855L, CLS 1055Original short-TeleWeir filters (X268544/X268520 + X268513 Eco Pur) are discontinued; X268548 + X268532 is the factory replacement. | 2013-2015 | X268548 | 1 | X268532 | 1 | — | Complete set |
| Balance 6 / 6 CS / 7 / 8 / 9, Precision 67 / 7 / 8Balance 6, Balance 6 CS, Balance 7, Balance 8, Balance 9, Precision 67, Precision 7, Precision 82016 Balance/Precision models shipped with the earlier short-TeleWeir cartridges (X268544/X268520 + X268513), all replaced by this same set. Balance 6/6 CS/9 and Precision 67 joined the lineup in 2017. Factory fitment tables list 2018+; the 2017 start comes from the EcoPur Charge table and the 2017 owner's manual. | 2016-2024 | X268548 | 1 | X268532 | 1 | — | Complete set |
| Balance 6 / 6 CS / 7 / 8 / 9, Precision 67 / 7 / 8Balance 6, Balance 6 CS, Balance 7, Balance 8, Balance 9, Precision 67, Precision 7, Precision 82025 filters are NOT interchangeable with earlier years. The X268559 non-EcoPur cartridge applies to some 2025 Clarity/Getaway configurations, and factory materials also associate the shorter X268569 with some Clarity builds - measure your old filter or ask us if unsure. Precision 67 is 2025-only (dropped for 2026). | 2025-current | X268568 | 1 | X268532 | 1 | — | Complete set |
Value Hot Tubs
Getaway Spas — the rotationally molded GS San Miguel, Ocho Rios, and Bar Harbor — take a two-part set: the X268550 PMA-R5 outer with the X268532 EcoPur Charge (2017–2024), or the X268569 outer with the same core on 2025+ models. Getaway serial numbers start with “R”. If you have one of the earlier Caribbean-named Getaways, contact us and we’ll match it.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| Caribbean modelsBermuda, Antigua, Cayman, Exuma, St. LuciaNo official fitment record exists for the mid-2010s Caribbean-named Getaway models. Send us a photo of your filter or your serial number and we will match it. | 2014-2016 | Confirm with us | — | Confirm with us | — | — | Ask us |
| GS San Miguel / Ocho Rios / Bar HarborSan Miguel, Ocho Rios SE, Ocho Rios LE, Ocho Rios CS, Bar Harbor SE, Bar Harbor LEOriginal X268537 outer is discontinued; X268550 is the factory replacement. | 2017-2024 | X268550 | 1 | X268532 | 1 | — | Complete set |
| GS San Miguel / Ocho Rios / Bar HarborSan Miguel, Ocho Rios SE, Ocho Rios LE, Ocho Rios CS, Bar Harbor SE, Bar Harbor LE2025 filters are NOT interchangeable with earlier years. This set is for Getaways with the EcoPur Charge core; the X268559 non-EcoPur cartridge applies to some 2025 Getaway configurations - ask us if your spa has no inner core. | 2025-current | X268569 | 1 | X268532 | 1 | — | Complete set |
Legacy Hot Tubs
Down East Spas ran alongside Master Spas’ main lines through 2013 and shared their filter platforms. The 2004–2013 black-standpipe models (Bar Harbor, Cape Cod, Exeter, Hampton, Portsmouth, Windsor) convert straight to the current X268546 + X268532 new-style set — pull the black standpipe and lid out first. The Somerset and East Hampton weir models use the X268548 + X268532 pair.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| All modelsX268500 (8 in diameter, 70 sq ft) fits 1996-2000 Down East models. Some 1999-2001 models used the smaller 5-in X268201 25 sq ft cartridge instead, which is discontinued with no direct replacement - measure your old filter, and ask us about 2001 models. | 1996-2001 | X268500 | 1 | — | — | — | Shop filter |
| Bar Harbor / Cape Cod / Exeter / Hampton / Portsmouth / WindsorBar Harbor, Cape Cod, Exeter, Hampton, Portsmouth, WindsorX268057 old-style Eco Pur (closed top, molded handle, no standpipe) pairs with a micro outer filter - contact us to match the outer cartridge for your model. | 2002-2003 | — | — | X268057 | 1 | — | Shop filter |
| Bar Harbor / Cape Cod / Exeter / Hampton / Portsmouth / WindsorBar Harbor, Cape Cod, Exeter, Hampton, Portsmouth, Windsor, Windsor STSOriginal X268552/X268325 outer + X268056 Eco Pur + black standpipe system is discontinued. Remove the black standpipe and lid when installing the new-style set. | 2004-2013 | X268546 | 1 | X268532 | 1 | — | Complete set |
| Somerset / East Hampton (weir models)Somerset, East HamptonOriginal short-TeleWeir X268544/X268520 + X268513 (the '2010 Down East Eco Pur') are discontinued; X268548 + X268532 is the factory replacement. | 2010-2012 | X268548 | 1 | X268532 | 1 | — | Complete set |
| Select legacy models (weir cartridges)Two in-stock legacy cartridges fit select Down East and Freedom models: X268300 PRB35-IN (35 sq ft, 5 in diameter, 9.25 in long) and X268080 PMA40-F2M (40 sq ft, 7.1 in diameter). Measure your old filter or send us a photo and we will match it. | varies | Confirm with us | — | Confirm with us | — | — | Ask us |
Fitness Swim Spas
Swim spas run more filtration than hot tubs — three to seven cartridges depending on the model. 2017–2024 H2X spas combine the X268549 outer and X268532 EcoPur Charge in the skimmer with one to three X268542 stand-alone filters: a Trainer 12 takes three filters total, the Trainer 15 family four, and a Trainer 19 seven. Therapool models use hot-tub-style cartridges instead. On the 2025 platform, most models moved to the X268566/X268560 family — but the Trainer 12, Trainer 18D, and Challenger 18D kept the older cartridges.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| All models (Trainer / Crosstrainer / early Trainer 12-19D)H2X Swim Spa, H2X RX, Crosstrainer, Crosstrainer 2, Trainer 12, Trainer 14, Trainer 15, Trainer 15D, Trainer 17, Trainer 18, Trainer 19, Trainer 19DOriginal one-piece Eco Pur X268045 is discontinued - Master Spas' replacement is the X268549 outer + X268532 EcoPur Charge combo. The X268542 stand-alone fits 2006-2024. Match the number of cartridges you remove from the basket. | 2006-2016 | X268549 | 1 | X268532 | 1 | X268542 ×1 | Complete set |
| Trainer 12 (single-skimmer)Three-filter configuration for swim spas with a single filter skimmer housing. | 2017-2024 | X268549 | 1 | X268532 | 1 | X268542 ×1 | Complete set |
| Trainer 15 / 15D / 18 / 18D, Challenger 15D / 18DTrainer 15, Trainer 15D, Trainer 18, Trainer 18D, Challenger 15D, Challenger 18D, Challenger 18D ProFour-filter configuration: EcoPur skimmer plus two stand-alone bays. The model-to-configuration mapping is dealer-documented, not factory-published, and Challenger models begin in 2019 - count your housings before ordering, or ask us. Cartridge part numbers themselves are factory-confirmed for every model listed. | 2017-2024 | X268549 | 1 | X268532 | 1 | X268542 ×2 | Complete set |
| Trainer 19 / 19DTrainer 19, Trainer 19DSeven-filter configuration (two EcoPur skimmers + three stand-alone bays), matching the factory 7-filter set for Trainer 19 and MP Momentum. The count is factory-documented for the Trainer 19; the 19D is assumed identical - count your housings if unsure. | 2017-2024 | X268549 | 2 | X268532 | 2 | X268542 ×3 | Complete set |
| Challenger 19DUses the same X268549 / X268532 / X268542 cartridges as other 2017-2024 H2X models. The factory part finder lists both the 4-filter and 7-filter sets for this spa, so the exact count is not fixed - count your housings; larger layouts take the 7-filter set (SWIMSPAEPRSET19). | 2019-2024 | X268549 | 1 | X268532 | 1 | X268542 ×2 | Complete set |
| Therapool (pre-Charge era)The X268543 stand-alone is factory-documented for 2015-2016 Therapools, but the outer/mineral combination predates EcoPur Charge and is not published - ask us to match your cartridges. | 2015-2016 | Confirm with us | — | Confirm with us | — | — | Ask us |
| Therapool SE / Therapool DTherapool SE, Therapool DTherapool uses the hot-tub-style filter system, not the Trainer swim spa cartridges. | 2017-2024 | X268546 | 1 | X268532 | 1 | X268543 ×1 | Complete set |
| Therapool SE / Therapool DTherapool SE, Therapool D2025 filters are NOT interchangeable with earlier years. Per the factory part finder, 2025+ Therapool SE and D use the 2025 swim-spa platform: X268566 outer + X268532 EcoPur Charge + X268560 stand-alone (NOT the earlier X268568). Late-production X268560 units are stamped X268572; confirm outer length (X268566 is 9 in, some builds take the 7.5 in X268567) before ordering. | 2025-current | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
| Therapool 13 / Therapool 15Therapool 13, Therapool 15Therapool 15's introduction year is undocumented; the cartridge fitment is factory-listed for both models. | 2019-current | X268548 | 1 | X268532 | 1 | X268554 ×1 | Complete set |
| Trainer 15 / 15D / 19 / 19D, Challenger 15D / 19DTrainer 15, Trainer 15D, Trainer 19, Trainer 19D, Challenger 15D, Challenger 19DEXCEPTIONS: 2025 Trainer 12, Trainer 18D and Challenger 18D continue to use the previous X268549 + X268532 + X268542 filters. The factory store separately lists X268559 for 'most 2025 H2X' without a published fitment page - if your outer measures under 9 in, ask us first. Larger models may need additional stand-alone filters - match what you remove. Late-production X268560 units are stamped X268572. | 2025-current | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
| Trainer 12 / Trainer 18D / Challenger 18DTrainer 12, Trainer 18D, Challenger 18DThese three models kept the previous-generation filters on the 2025 platform. Stand-alone filter count varies by housing layout - match what you remove. | 2025-current | X268549 | 1 | X268532 | 1 | X268542 ×1 | Complete set |
| Trainer 19D MAX / 21 / 21D, Challenger 19D MAX / 21DTrainer 19D MAX, Trainer 21, Trainer 21D, Challenger 19D MAX, Challenger 21D2025 swim-spa platform: X268566 outer + X268532 EcoPur Charge + X268560 stand-alone (late-production X268560 stamped X268572). These are large multi-housing swim spas, so you will likely need more than one set - count your housings and match what you remove. NOT interchangeable with pre-2025 filters. | 2025-current | X268566 | 1 | X268532 | 1 | X268560 ×1 | Complete set |
Shop all H2X Fitness Swim Spas filters → ↑ Use the filter finder
Signature Swim Spas
Michael Phelps Signature swim spas share the H2X cartridge family. Force and Signature models (2017–2024) run the four-filter configuration; the dual-end Momentum takes the full seven-filter set — it has a spa end and a swim end, each with its own filtration. 2025+ models (including the Signature Pro and Momentum Deep) moved to the X268566/X268560 platform.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| All models (Momentum / Signature / Force / Impact)MP Momentum 50, MP Momentum 80, MP Signature, MP Force, MP ImpactThe original 2011 one-piece Eco Pur X268045 + X265010 are discontinued; the X268549 outer + X268532 EcoPur Charge + X268542 stand-alone is Master Spas' current replacement (same as 2012-2016). Larger and dual-end models take more stand-alone filters - match what you remove. The MP Xtreme is listed separately below. | 2011 | X268549 | 1 | X268532 | 1 | X268542 ×1 | Complete set |
| All models (Momentum / Signature / Force / Impact)MP Momentum 50, MP Momentum 80, MP Momentum 80 Deep, MP Signature, MP Signature S, MP Force, MP Force Deep, MP ImpactOriginal one-piece Eco Pur X268045 + X265010 are discontinued - the X268549 + X268532 combo plus X268542 is Master Spas' replacement. Match the number of cartridges you remove. | 2012-2016 | X268549 | 1 | X268532 | 1 | X268542 ×1 | Complete set |
| Force / Force D / Signature / Signature DMP Force, MP Force Deep, MP Signature, MP Signature DFour-filter configuration (EcoPur skimmer + two stand-alone bays). The model-to-configuration mapping is dealer-documented, not factory-published, and Signature D fitment is inferred from the Signature plus the factory's blanket 2017-2024 statement - count your housings before ordering, or ask us. | 2017-2024 | X268549 | 1 | X268532 | 1 | X268542 ×2 | Complete set |
| Momentum / Momentum DMP Momentum, MP Momentum 80, MP Momentum 80 Deep, MP Momentum D, MP Momentum DeepSeven-filter configuration - the Momentum has separate spa and swim ends, each with filtration. | 2017-2024 | X268549 | 2 | X268532 | 2 | X268542 ×3 | Complete set |
| MP XtremeThe Xtreme appears in every MP owner's manual 2011-2025 but in no filter fitment table for any year. Its era suggests the standard MP swim spa cartridges, but neither parts nor counts are documented - send us your serial number and filter photos. | 2012-2025 | Confirm with us | — | Confirm with us | — | — | Ask us |
| Momentum / Momentum Deep / Force / Force D / Signature / Signature D / Signature ProMP Momentum, MP Momentum Deep, MP Force, MP Force Deep, MP Signature, MP Signature D, MP Signature ProUnlike the 2025 hot tubs, 2025+ Michael Phelps swim spas KEPT the previous swim-spa cartridges: X268549 outer + X268532 EcoPur Charge + X268542 stand-alone. Force / Signature run the 4-filter set; the dual-end Momentum takes the 7-filter set (SWIMSPAEPRSET19). Count your housings and match what you remove. | 2025-current | X268549 | 1 | X268532 | 1 | X268542 ×2 | Complete set |
Shop all MP Signature Swim Spas filters → ↑ Use the filter finder
Legacy Whirlpool, Freedom, Contractor, Instinct, Chilly GOAT
Master Spas has built several value and specialty lines over the years. The 2023+ Legacy Whirlpool models take the same X268546 + X268532 set as the Twilight Series. Contractor Series, Freedom, Tahiti, Instinct, and Chilly GOAT cold tubs each have their own cartridge, listed below. Not listed? Ask us — if Master Spas built it, we can identify the filter.
| Model | Years | Outer Filter | Qty | Inner (EcoPur) Filter | Qty | Stand-Alone Filter | Shop |
|---|---|---|---|---|---|---|---|
| Intrepid / Inspire / Enterprise / 730L / AcclaimIntrepid, Inspire, Enterprise, 730L, AcclaimFactory tables list model year 2023 only; 2024+ Legacy Whirlpool fitment is not yet published - ask us to confirm newer builds. | 2023 | X268546 | 1 | X268532 | 1 | — | Complete set |
| Older Legacy Whirlpool & Freedom modelsLegacy Whirlpool (older), Freedom SpasThree cartridge sizes appear across these models: X268080 (40 sq ft, 7.1 in dia), X268300 PRB35-IN (35 sq ft, 5 in dia), and X268526 PMA15P3 (15 sq ft, 4.6 in dia) - measure your old filter or ask us. Standpipe-era models can convert to the X268546 + X268532 new-style set. | pre-2023 | X268080 | 1 | — | — | — | Shop filter |
| All modelsOriginal X268100 20 sq ft cartridge is discontinued with no direct replacement. Contact us for options. | all years | — | — | — | — | — | Ask us |
| All modelsOriginal X268519 PLBS50-M is discontinued; X268558 is the factory replacement. | 2011 and earlier | X268558 | 1 | — | — | — | Shop filter |
| All models except CS 415 | 2012 | X268554 | 1 | — | — | — | Shop filter |
| CS 415 (oval)Built around 2012; exact production years unpublished. Measure to confirm: 4.75 in diameter x 9.75 in total length. | 2012 | X268521 | 1 | — | — | — | Shop filter |
| All modelsInstinct, Natural Instinct, Pure Instinct, Vital InstinctInstinct Spas do not use an EcoPur core - they take a single cartridge. The official part finder lists X268554 (PWW35L, no handle) for 2025 Natural / Pure / Vital Instinct and the X268563 standard handled filter for 2026. We stock X268554; tell us your model year and whether your cartridge has a molded handle and we will match it. | 2025-current | Confirm with us | — | Confirm with us | — | — | Ask us |
| All models | all years | X268526 | 1 | — | — | — | Shop filter |
Shop all Other Master Spas Brands filters → ↑ Use the filter finder
Master Spas uses a two-part filter in most spas built since 2002: a pleated outer filter and an EcoPur Charge mineral core that locks inside it. The outer cartridge does the mechanical work — it traps leaves, hair, body oils, and scum before they reach the plumbing. The inner core is the water-care half: Master Spas describes it as replicating the way nature purifies water with copper and zinc. As water passes through, low levels of copper and zinc oxides help control bacteria, algae, and scale, which is why a spa with a fresh EcoPur core needs noticeably less sanitizer. EcoPur reduces the chemicals you use by up to 80% — let the filter do the work for you.
Many models add a third cartridge — a stand-alone filter in a separate housing — and swim spas run up to seven cartridges across multiple housings. The EcoPur set always belongs in the filter port closest to the topside control panel. One important chemistry note: EcoPur filters are not compatible with bromine systems.
From 2002 through 2016 the mineral cartridge went through several one-piece versions (Eco Pur). In 2017 Master Spas switched every brand to the current snap-in EcoPur Charge design, and in 2025 the outer cartridges were redesigned again. That history is why the chart above splits by year — the right filter depends on when your spa was built, not just the model name.
Master Spas’ guidance is consistent across every owner’s manual: the EcoPur Charge core gets replaced every 6 months — the minerals deplete whether the fabric looks dirty or not — and it lines up with the recommended 180-day drain-and-refill. The outer and stand-alone filters last about a year with regular cleaning. Rinse weekly, deep-clean monthly, replace annually.
Heavy bather load shortens all of these intervals. Replace a filter early if the fabric is fuzzy, frayed, or torn, the pleats stick together, the end caps are brittle or cracked, or an odor survives cleaning. A tired filter shows up as cloudy water and FLO errors long before it looks worn out.
| Task | How often |
|---|---|
| Rinse filters with a garden hose | Weekly |
| Soak outer filters overnight in filter cleaner | Monthly |
| Replace EcoPur Charge core (with drain & refill) | Every 6 months |
| Replace outer / stand-alone filters | About every 12 months |
Weekly: pull the outer and stand-alone cartridges and spray between the pleats with a garden hose until the water runs clear. Monthly: soak them overnight in a spa filter cleaner, then rinse thoroughly — leftover cleaner will foam your spa when it fires back up. Keeping a spare set means the spa never waits on a wet filter, and rotating two sets makes both last longer.
The EcoPur Charge core plays by different rules: rinse it with the hose only. Soaking it in cleaner deactivates the copper-zinc minerals that make it work.
Seeing a FLO error on the topside panel? A dirty filter is the most common cause — clean or replace the filters before chasing anything else, and see our Master Spas error code guides if it persists.
Master Spas filters aren’t generic cartridges. Threads differ across the lineup — 2-inch male threads, SAE threads, closed-bottom MBT designs — and lengths and diameters changed with nearly every platform. The 2025 cartridges don’t fit earlier spas at all (Master Spas makes small adapters, X251168 and X251169, specifically to retrofit 2025 filters into older tubs). A filter that’s close-but-not-quite either won’t seal or lets water bypass the pleats, and an off-spec flow rating is a classic source of FLO errors and heater shutdowns.
The EcoPur Charge core has no aftermarket equivalent — the mineral system is a patented Master Spas design, so a knock-off “compatible” insert is just fabric. And because your spa’s water care program assumes the mineral core is present, skipping it means more sanitizer and more work.
OEM cartridges keep everything inside the spec your spa was engineered — and warrantied — around. That’s all we stock: genuine Master Spas replacement filters, straight from the manufacturer.
Everything you need is on the serial number plate. Check three places: near the filter area, on the spa system pack (behind the equipment door), or on the listing plate on the frame behind the front skirt panel. Older spas put it on the skirting itself.
Fastest route of all: send us the serial number plus a photo of your filters. We match Master Spas fitments every day, and a photo removes all doubt.
Replace the EcoPur Charge mineral core every 6 months and the outer and stand-alone filters about once a year. Rinse filters weekly and soak the outer filters in a filter cleaner monthly. Heavy bather load shortens all of those intervals.
EcoPur Charge is Master Spas’ mineral water-purification core. It uses copper and zinc to help control bacteria, algae, and scale so you use fewer chemicals. The current part is X268532 (PMA-EPR), which snaps inside the outer filter and replaces all earlier Eco Pur mineral cartridges. It is not compatible with bromine systems.
Master Spas says never to run the pumps without filters in place, and the EcoPur core is a designed part of the filtration system. Without it your water loses the mineral purification the water-care program assumes, so plan on more sanitizer and closer water testing. Replace a spent core rather than running without one.
No. Thread type, diameter, and length differ by series and year — a Getaway cartridge will not seal in a Twilight, and 2025-platform filters do not fit earlier spas at all. Match your exact model and year in the chart above.
Find the serial number near the filter area, on the spa system pack, or on the plate behind the front skirt panel. On most models built since 2009 the first two digits are the model year (2212345 = 2022). Getaway serials start with R, swim spas start with H, and 2008-and-earlier spas start with M.
2017–2024 Twilight spas use the X268546 outer with the X268532 EcoPur Charge core, plus the X268543 stand-alone filter. The TS 120 and TS 240 use X268548 + X268532 instead. 2009–2016 spas take the same current replacement parts, and 2025 models switched to the new X268566/X268567 cartridges.
2017–2024 H2X swim spas combine an X268549 outer and X268532 EcoPur Charge in the skimmer, plus one to three X268542 stand-alone filters depending on the model. A Trainer 12 takes three filters total, the Trainer 15 family takes four, and a Trainer 19 takes seven. Therapool models use hot-tub-style cartridges instead.
Master Spas superseded most older filters: X268365 became X268543; X268551, X268512, and X268533 became X268546; X268511, X268056, X268513, and X268045 are all replaced by the X268532 EcoPur Charge; X268045’s outer role went to X268549; X265010 became X268542; and X268514, X268545, X268544, and X268520 became X268548. The chart above lists the current part for every model.
No. Dishwashers, bleach, dish soap, and pressure washers all damage the filter media. Rinse with a garden hose weekly and soak outer filters overnight in a spa filter cleaner monthly. Never soak the EcoPur core — soaking deactivates its minerals; rinse it only.
Some come close physically, but Master Spas filters use specific threads, lengths, and flow ratings, and the EcoPur Charge mineral core has no aftermarket equivalent. Off-spec filters are a common cause of FLO errors and bypassed debris. We stock genuine OEM cartridges only.
A dirty or failing filter is the most common cause. Remove and clean the filters, or replace them if they are due, then restart the spa. If the error persists, check our Master Spas error code guides — it can also point to a pressure switch or circulation pump issue.
It varies: most 2017–2024 H2X and MP swim spas use three filters (outer + EcoPur + one stand-alone), larger models like the Trainer 15 family use four, and dual-end spas like the MP Momentum and Trainer 19 use seven. Count your filter housings or check the chart above.
Send us your serial number or a photo of your old filter. We’re Suntek Pools & Spas — a Master Spas dealer for over 35 years — and matching filters is what we do all day.