6 Best Hot Tub Replacement Filters (November 2026)
The best hot tub replacement filters include the Malaka Spa Replacement Filter FD2007 Compatible for PWW50L replacements, the Macaberry Type Ⅵ Hot Tub Spa Filter for frequent Type VI changes, and the PACETAP 1 1/2" SAE Thread Screw for PWW50P3 thread filters.
On this page (4 sections)
The best hot tub filter replacement for most PWW50L owners is the Malaka FD2007 2-pack, with a 50 sq. ft. filtration area, a 2 in female SAE thread and a top handle. Choose by exact dimensions, connection style and spa model before ordering.
A replacement cartridge only works well when it fits the filter housing and pump system. See replacement hot tub pumps if the pump, rather than the cartridge, needs attention.
Compare the old filter's length, outside diameter, openings, thread and model number before you compare pack sizes.
If you're still choosing a spa, start with our guide to hot tubs. If you're weighing warm-water soaking against dry heat, our Sauna vs Hot Tub: Dry Heat or Warm Water? guide explains the main difference.
Our picks at a glance
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1
Best for PWW50L replacementsMalaka Spa Replacement Filter FD2007 Compatible
9.7/10 our score
See it on Amazon -
2
Best for frequent Type VI changesMacaberry Type Ⅵ Hot Tub Spa Filter
9.6/10 our score
See it on Amazon -
3
- 4
Check itLYJHKJ Type VI Inflatable Hot Tub Filters
Best for SaluSpa model matching - 5
Check itVickmons 2 Pack PBF40M Spa Hot Tub
Best for Bullfrog PBF40M systems - 6
Check itHot Spring Watkins Grandee Tri-X Replacement Filter
Best for Hot Spring Highlife spas
Which hot tub replacement filters are the best?
The best hot tub replacement filters are the ones that match your spa's cartridge format without forcing a different thread, opening or height. Malaka leads this group for the PWW50L format, while the Type VI options suit inflatable systems and the remaining picks target specific spa families.
We compared the stated dimensions, connection styles, model compatibility, filtration area and pack size. Our score weighs specs, features and buyer feedback against what you're shopping for.
Malaka Spa Replacement Filter FD2007 Compatible: Best for PWW50L replacements
- 13 3/16 in length
- 5 in outside diameter
- 2 in female SAE thread
- 50 sq. ft. filtration area
- 2-pack
This 2-pack is made for PWW50L, 4CH-949 and FC-0172 replacements. Its 50 sq. ft. filtration area and top handle suit owners who need a direct cartridge match.
Pros
- Clear dimensions
- Top handle
- 2-pack
- 50 sq. ft. filtration area
Cons
- Compatibility depends on exact model and thread size
The Malaka FD2007 is the strongest overall pick when your spa uses the PWW50L, 4CH-949 or FC-0172 format. It measures 13 3/16 in long and 5 in across, so compare those measurements with your old cartridge before ordering.
The cartridge has a 2 in female SAE thread, a top handle and a 50 sq. ft. filtration area. Those details help identify the fit more accurately than a general search for hot tub filters replacement.
The 2-pack also gives you a spare cartridge for the next change. Its polyester construction is stated in the product information, and the filter is designed to reduce sediment.
Choose it when your old filter matches the named models and thread. For another PWW50 format, compare our guide to the best PWW50 hot tub filter options before buying.
Macaberry Type Ⅵ Hot Tub Spa Filter: Best for frequent Type VI changes
- Type VI cartridge
- Compatible with Lay-Z-Spa and Coleman SaluSpa 90352E and 58323
- 4.1 x 3.1 in size
- 12-pack
A 12-pack gives inflatable hot tub owners a large supply of Type VI cartridges. The design fits Lay-Z-Spa, Coleman SaluSpa 90352E and 58323 systems when those models match your pump.
Pros
- 12-pack
- Type VI format
- Fits several named inflatable spa systems
Cons
- Only suitable for systems that use Type VI cartridges
Macaberry is the best fit for owners of inflatable spas that use a Type VI cartridge. Its named compatibility includes Lay-Z-Spa and Coleman SaluSpa 90352E and 58323 systems.
Each cartridge measures 4.1 x 3.1 in, and the pack contains 12 filters. That larger supply suits frequent changes, shared spas or households that want replacement cartridges ready for the season.
The Type VI cartridge sits inside the filter pump and captures dirt as water passes through. Macaberry describes a dacron fabric that collects hair, leaves, dust, sediment and sand.
Confirm the pump's cartridge type before ordering. Our guide to the best SaluSpa hot tub filters can help if you need more model-specific comparisons.
PACETAP 1 1/2" SAE Thread Screw: Best for PWW50P3 thread filters
- 8 1/4 in length
- 6 in outside diameter
- 1 1/2 in SAE thread
- 45 sq. ft. filtration area
- 2-pack
This 2-pack targets Pleatco PWW50P3, Unicel 6CH-940, Filbur FC-0359 and Waterways 817-0050 replacements. Its 1 1/2 in SAE thread and 6 in diameter make measurement essential.
Pros
- Named cross-brand compatibility
- 2-pack
- 45 sq. ft. filtration area
Cons
- Not compatible with PWW50P4
PACETAP is the right choice when your replacement needs a 1 1/2 in SAE thread and the PWW50P3 format. It is compatible with Pleatco PWW50P3, Unicel 6CH-940, Filbur FC-0359 and Waterways 817-0050.
The filter measures 8 1/4 in long and 6 in across, with a circular handle and 45 sq. ft. of filtration area. The product is explicitly marked as not compatible with PWW50P4, so that distinction matters before you order.
PACETAP describes a trilobal fiber structure and rinse-clean care. It is sold as a 2-pack, which lets you keep one cartridge available while the other is being cleaned.
Measure the thread and body before choosing it. If the damaged part is the container around the cartridge rather than the cartridge itself, see our guide to best hot tub filter housing replacement.
LYJHKJ Type VI Inflatable Hot Tub Filters: Best for SaluSpa model matching
- Type VI cartridge
- 4-pack
- Compatible with Coleman SaluSpa 90352E, 58323E, 58323, 58324, 90427E, 90363E and 60311E
- Pleated design
This 4-pack suits inflatable spa owners who need a Type VI cartridge for several named Coleman SaluSpa or Lay-Z-Spa systems. Weekly cleaning and replacement every 2 weeks are part of the stated care guidance.
Pros
- 4-pack
- Many named SaluSpa models
- Pleated design
Cons
- Model matching remains essential
LYJHKJ suits inflatable hot tub owners who need a Type VI cartridge for a broader group of named Coleman SaluSpa models. The compatibility list includes 90352E, 58323E, 58323, 58324, 90427E, 90363E and 60311E, along with Lay-Z-Spa systems.
The pack contains 4 filters, and the cartridge uses a pleated design. LYJHKJ also describes an impregnated woven fiber with a trilobal structure and a chlorine-resistant end cap.
For care, the guidance calls for weekly cleaning, a filter cleaning tool and high-pressure rinsing. It recommends replacing the cartridge every 2 weeks for best performance.
This is a useful choice when your model number appears in the compatibility list. For a shorter comparison of inflatable formats, see the best inflatable hot tub filters guide and the best Coleman SaluSpa filter replacement picks.
Vickmons 2 Pack PBF40M Spa Hot Tub: Best for Bullfrog PBF40M systems
- PBF40M format
- 8 in outside diameter
- 6 1/4 in length
- 3 3/8 in top hole
- 4 1/2 in bottom hole
- 2-pack
This 2-pack is for Pleatco PBF40M, Pleatco PBF40-M and Bull Frog Wellspring 30 Coreless 10-00282 replacements. The larger bottom opening fits the spa mounting assembly described for this format.
Pros
- Clear opening dimensions
- 2-pack
- Named Bullfrog compatibility
Cons
- Not compatible with STIL spas 2018 model 10-00281
Vickmons is made for the PBF40M format used with Pleatco PBF40M, Pleatco PBF40-M and Bull Frog Wellspring 30 Coreless 10-00282 cartridges. It is not compatible with STIL spas 2018 model 10-00281.
Each cartridge is 8 in in diameter and 6 1/4 in long. The top hole measures 3 3/8 in, while the bottom hole measures 4 1/2 in, so check both openings instead of relying on the model name alone.
The bottom opening is larger to fit the spa mounting assembly described for this cartridge. The 2-pack lets you keep a second filter ready while the first is being washed.
Vickmons recommends replacing PBF40M cartridges every 1 to 2 months. If you own a Bullfrog system, compare this option with the best hot tub filters Bullfrog guide.
Hot Spring Watkins Grandee Tri-X Replacement Filter: Best for Hot Spring Highlife spas
- Tri-X replacement filter set
- Set of 5
- Fits named Hot Spring Grandee, Vista, Envoy, Vanguard, Jetsetter and other models
This set of 5 is designed for named Hot Spring Highlife spa models, including Grandee, Vista, Envoy, Vanguard, Jetsetter, Prodigy, Sovereign and Aria. It suits owners who want the specified Watkins Tri-X format.
Pros
- Set of 5
- Broad named Hot Spring compatibility
- Manufacturer-branded replacement
Cons
- Only suits the named Hot Spring spa families
The Hot Spring Watkins set is the specialized choice for named Hot Spring Highlife spas. It fits models including Grandee, Vista, Envoy, Vanguard, Grandee NXT, Envoy NXT, Jetsetter, Jetsetter NXT, Prodigy, Sovereign, Alccolade, Landmark, Aria and Highlife ILE across the model years named in the title.
The set contains 5 Tri-X replacement filters. That makes it a better match for owners who need the specified Hot Spring format than for shoppers comparing universal-looking cartridges.
Check your spa model and year range carefully. For a wider brand comparison, see the best Jacuzzi hot tub filters, best Unicel hot tub filters and best Pleatco hot tub filters guides.
How should you compare hot tub filter replacement cartridges?
Compare the cartridge in this order: model number, length, outside diameter, opening or thread, top style and pack size. The connection style is a deciding detail, because a filter with the right height can still fail to attach to the housing.
Why do dimensions matter for hot tub replacement filters?
Dimensions control whether the cartridge sits correctly inside the housing. The Malaka FD2007 is 13 3/16 in long and 5 in wide, while the PACETAP replacement is 8 1/4 in long and 6 in wide.
Measure the old filter after removing it. Record the length, widest point and every opening, then compare those measurements with the replacement before you buy.
Which connection styles do replacement hot tub filters use?
The products here use different connection details. Malaka uses a 2 in female SAE thread, PACETAP uses a 1 1/2 in SAE thread, and Vickmons uses distinct top and bottom holes rather than the same thread format.
Don't assume that PWW50, Type VI or PBF40M names are interchangeable. The model suffix can identify a different fit, as shown by PACETAP's warning about PWW50P3 versus PWW50P4.
Do pack sizes affect the best hot tub filter replacement?
Pack size matters when you clean filters often or keep a spare ready. Macaberry offers 12 Type VI cartridges, LYJHKJ offers 4, Malaka and PACETAP offer 2-packs, Vickmons offers a 2-pack and Hot Spring Watkins offers a set of 5.
A larger pack helps reduce interruptions, but only after you confirm the exact cartridge format. Buying a large pack of the wrong filter creates more storage, not a working replacement.
What should you check before installing a new cartridge?
Turn off the spa circulation system before removing the old cartridge, then compare the old and new parts side by side. The new filter should match the body shape, connection and model format without force.
Rinse a reusable cartridge with clean water and inspect the pleats or fabric for damage. Keep a second cartridge ready when your cleaning routine would otherwise leave the spa without filtration.
Use the filter-care interval that fits the cartridge and your use. Type VI guidance in this group calls for frequent cleaning and replacement every 2 weeks during heavy use, while Vickmons gives a 1 to 2 month replacement interval for its PBF40M format.
If the cartridge is intact but the cover or basket is damaged, a filter replacement may not solve the problem. See the guides to best hot tub filter cover, best hot tub filter basket and best hot tub filter adapter for those parts.
A filter sock can also help catch larger debris before it reaches the cartridge. Our guide to the best hot tub filter sock covers that separate accessory.
Which hot tub replacement filter should you choose?
Choose the Malaka FD2007 if your spa uses PWW50L, 4CH-949 or FC-0172 with a 2 in female SAE thread. Choose Macaberry or LYJHKJ for a confirmed Type VI inflatable spa system, using the model list and pack size to narrow the choice.
Pick PACETAP for a PWW50P3-style cartridge with a 1 1/2 in SAE thread, and choose Vickmons for a confirmed PBF40M or Bull Frog Wellspring 30 Coreless fit. Choose the Hot Spring Watkins set when your spa is one of the named Hot Spring models.
The best hot tub filter replacement is the cartridge that matches your measurements and model, not simply the one with the largest pack. Check those details first, then use filtration area, cleaning needs and spare-filter planning to make the final choice.
Our top 3 picks at a glance
-
1
Best for PWW50L replacements
Malaka Spa Replacement Filter FD2007 Compatible
9.7/10 our score
See it on Amazon -
2
Best for frequent Type VI changes
Macaberry Type Ⅵ Hot Tub Spa Filter
9.6/10 our score
See it on Amazon -
3
Frequently asked questions
How do I choose the best hot tub filter replacement?
Match the old cartridge's length, outside diameter, openings or thread, top style and model number before comparing pack size. A filter can look similar yet use a different connection.
For example, the Malaka FD2007 uses a 2 in female SAE thread, while the PACETAP filter uses a 1 1/2 in SAE thread.
How often should hot tub filters be replaced?
The timing depends on use, cleaning and the cartridge type. Macaberry recommends cleaning Type VI cartridges often and replacing them every 2 weeks during heavy use.
LYJHKJ also recommends weekly cleaning and replacement every 2 weeks, while Vickmons recommends replacing its PBF40M cartridges every 1 to 2 months.
Can I use a different brand of hot tub replacement filter?
Yes, if the replacement matches the required dimensions, connection style and spa model. Cross-brand names can help with searching, but they don't replace measurement.
PACETAP names Pleatco, Unicel, Filbur and Waterways formats, while Vickmons names Pleatco and Bull Frog formats.
Are Type VI filters interchangeable?
Type VI filters share a cartridge format, but you should still confirm the pump and spa model before ordering. Macaberry and LYJHKJ both use Type VI cartridges, yet their titles and compatibility lists identify different model groups.
Match the old cartridge and pump system first.
How should I clean a hot tub filter cartridge?
Remove the cartridge and rinse it with clean water, following the spa and filter instructions. LYJHKJ recommends a filter cleaning tool and high water pressure, while PACETAP describes rinsing for reuse.
Let the cartridge drain before reinstalling it, and replace it when cleaning no longer restores normal flow.
