Hot Tub Filters
Hot Tub Filters and Essential Filter Cleaning for Optimal Performance
Maintaining your hot tub’s filtration system is crucial for clean, safe water. Regular filter cleaning and timely replacement prevent bacterial growth common in warm water environments. Effective filtration keeps your hot tub inviting, reduces maintenance needs, and ensures a healthier soak.
Wide Range of Popular Hot Tub Filters UK
We carry a wide selection of hot tub and spa filters for all makes and models, both classic and modern. Stocked in the UK and shipped quickly from our Hampshire warehouse, our filters are available with fast delivery nationwide. Use our website to find your perfect filter by size, model, or attachment type (including screw-on options).
Guides and Filter Cleaning Resources
- Replacement Guide:
Learn how to find the correct hot tub filter cartridges for your spa - Above-Ground Pool Filters:
Check our guide for Intex pool filters and other popular models.
Hot Tub Filter Cleaning
- See our separate category for products relating to hot tub filter cleaning.
- Read our guide on how to clean hot tub filters which includes hot tub filter hacks for cleaning and making hot tub filters last longer.
All our Darlly hot tub filters come with a 1 year guarantee.
So if the plastics break or the fabric degrades, we will replace it!
Top-Quality Hot Tub Filters at Competitive Prices
We stock only the best filters, built to the highest standards. Use our attribute menus to search by brand, size, description, or manufacturer product codes. Find quality filters for all popular hot tub models at some of the UK’s best prices.
- SC781 - 48cm Hot Tub Filter Cartridge for Sundance Spa (Microclean 2)48cm Hot Tub Filter Cartridge from Darlly, suitable for Sundance Spa (Microclean 2) / C-8327. Learn More£76.22Out of stock
- SC820 - 59cm Hot Tub Filter Cartridge for Cal Spas and Hayward59cm Hot Tub Filter Cartridge from Darlly, suitable for Cal Spas and Hayward / C-8610. Learn More£72.48Out of stock
- SC761 - 44cm Hot Tub Filter Cartridge for Multiple Spas44cm Hot Tub Filter Cartridge from Darlly, suitable for Multiple Spas / C-8409. Learn More£66.54Out of stock
- SC743 - 75cm Hot Tub Filter Cartridge for Multiple Spas75cm Hot Tub Filter Cartridge from Darlly, suitable for Multiple Spas / C-7499. Learn More£65.99Out of stock
- SC747 - 46cm Hot Tub Filter Cartridge for Diamante Spas46cm Hot Tub Filter Cartridge from Darlly, suitable for Diamante Spas / 8CH-202. Learn More£65.99Out of stock
- SC763 - 48cm Hot Tub Filter Cartridge for Sundance Spas (Microclean Ultra Outer)48cm Hot Tub Filter Cartridge from Darlly, suitable for Sundance Spas (Microclean Ultra Outer)/ 6473-165. Outer cartridge part of a pair with SC762. Learn More£63.24Out of stock
- SC707 - 46cm Hot Tub Filter Cartridge for Sundance SpasSPECIAL CLEARANCE OFFER 50% OFF - 46cm Hot Tub Filter Cartridge from Darlly, suitable for Sundance Spas / C-8325. Learn More£63.00Out of stock
- SC775 - 41cm Hot Tub Filter Cartridge for Caldera Spas41cm Hot Tub Filter Cartridge from Darlly, suitable for Caldera Spas / C-8399. Learn More£62.69Out of stock
- SC822 - 44cm Hot Tub Filter Cartridge for Cal Spas and Hayward44cm Hot Tub Filter Cartridge from Darlly, suitable for Cal Spas and Hayward / C-8600. Learn More£59.72Out of stock
- SC801 - 75cm Hot Tub Filter Cartridge for Hayward and Crystal Pools75cm Hot Tub Filter Cartridge from Darlly, suitable for Hayward and Crystal Pools / C-7676. Learn More£59.35Out of stock
- SC708 - 48cm Hot Tub Filter Cartridge for Sundance Spas48cm Hot Tub Filter Cartridge from Darlly, suitable for Sundance Spas / C-8326. Learn More£57.52Out of stock
- SC813 - 39cm Hot Tub Filter Cartridge for Jacuzzi Spas39cm Hot Tub Filter Cartridge from Darlly, suitable for Jacuzzi Spas - J200 Pre 2012 / 8CH-102. Learn More£57.52Out of stock
- Aber Spas 1 item
- Aegean Spas 2 items
- Allseas Spas 1 item
- Alps Spas 4 items
- American Products 1 item
- American Spas 1 item
- Antigua 1 item
- Apollo Spas 3 items
- Aqua Mystic Spas 2 items
- Aqua Spas 1 item
- Arctic Spas 5 items
- Artesian Spas 16 items
- BestWay 1 item
- Axiom 1 item
- BCOOL II 1 item
- Beachcomber 5 items
- Bullfrog Spas 3 items
- Cal Spas 12 items
- Caldera 10 items
- California Cooperage 1 item
- Canadian Inflatable Spas 1 item
- Canadian Spas 6 items
- Catalina Spas 5 items
- Clearwater Spas 5 items
- Coast Spas 7 items
- Coleman Spas 11 items
- Coyote Hot Tubs 3 items
- Crest Spas Europe 2 items
- Crown Spas 1 item
- Crystal Pools 2 items
- Cyprus & Ria 1 item
- Diamante Spas 2 items
- Dimension One Spas 4 items
- Discovery Spas 1 item
- Down East Spas 2 items
- Dream Maker Spas 3 items
- Dynasty Spas 3 items
- Eco Spas 1 item
- Elite Spas 4 items
- Emerald Spas 1 item
- Endless Pools 1 item
- First Choice Hot Tubs 1 item
- Fonteyn Spas 5 items
- Freedom Spas 1 item
- Freeflow Spas 1 item
- Futura Spa 1 item
- Garden Leisure Spas 1 item
- GMT Spas 1 item
- Goldkey Spas 1 item
- Great Lakes Spas 2 items
- Gulf Coast Spas 2 items
- Hayward 11 items
- Hercules Spas 2 items
- Hollibaugh Spas 2 items
- Hotspring 7 items
- Hydro Spa 5 items
- Hydropool 6 items
- Infinity Spas 1 item
- Intex Pools 1 item
- Intex PureSpa 2 items
- Jacuzzi 11 items
- Jazzi Spa 4 items
- LA Spas 5 items
- Lay-Z-Spa 3 items
- Leisure Bay Spas 9 items
- Leisure Life 1 item
- Leisureite Spas 2 items
- Maax Spas 12 items
- Marquis Spas 4 items
- Master Spas 8 items
- Matrix 1 item
- Mistral Hot Tubs 2 items
- MSpa 1 item
- Muskin Pools 1 item
- Nordic Spas 3 items
- Optirelax 1 item
- Ospazia 1 item
- Passion Spas 1 item
- PDC Spas 6 items
- Pentair Pool Products 8 items
- Phoenican Spas 1 item
- Premier 1 item
- Premium Leisure Spa 1 item
- Rainbow Plastics 3 items
- Rising Dragon 2 items
- Roto Spas 3 items
- Saratoga Spas 3 items
- Serenity Spa 1 item
- Seven Seas Spas 1 item
- Signature Spas 5 items
- Softub 3 items
- Sonoma 1 item
- Southwest Spas 2 items
- Spa Crest 1 item
- Spa in a Box 1 item
- Spa Manufacturers Inc. 1 item
- Spaform 2 items
- Springwater Spas 1 item
- Sta-Rite 2 items
- Strong Spas 2 items
- Sun Spas 2 items
- Sunbelt Spas 4 items
- Sundance Spas 10 items
- Sunrise Spas 13 items
- Superior Spas 3 items
- Sweetwater 1 item
- Teledyne 1 item
- Thermo Spas 1 item
- Tiger River Spas 2 items
- US Bay 1 item
- US Spas 2 items
- Viking Spas 5 items
- Villeroy & Boch 4 items
- Vita Spa 14 items
- Waterside Leisure 1 item
- Waterway Plastics 10 items
- Wellis Spas 3 items
- Whitewater 1 item
- Castle 1 item
- Closed 8 items
- Closed with Tab 1 item
- Handle 43 items
- HozeLock Fitting 1 item
- Oval Hole 1 item
- 2.4 cm Hole 1 item
- 3 cm Hole 1 item
- 4 x ‘Y’ Clips 1 item
- 5 cm Hole 28 items
- 5 cm Male Slip 2 items
- 5 cm Slip Hole 1 item
- 5.5 cm Hole 1 item
- 6 cm Hole 2 items
- 6.4 cm Hole 1 item
- 7.5 cm Hole 9 items
- 10 cm Hole 4 items
- 10.2 cm Hole 1 item
- 11 cm 1 item
- 12 cm Hole 1 item
- 15.2 cm Hole 1 item
- Bayonet 1 item
- Closed 1 item
- Full Centre / Push Fit 1 item
- Off Centre Push Fit 1 item
- Oval Hole 1 item
- Push Fit 1 item
- 2.4 cm Hole 1 item
- 3 cm Hole 1 item
- 3.8 cm Coarse (SAE) Male Thread 5 items
- 3.8 cm FEMALE Coarse (SAE) Thread 1 item
- 3.8 cm Fine (MPT) Male Thread 14 items
- 3.8 cm Fine Thread 1 item
- 3.8cm FEMALE Coarse (SAE) Thread 1 item
- 4.8 cm Hole 1 item
- 5 cm Coarse (SAE) Male Thread 3 items
- 5 cm Fine (MPT) Male Thread 7 items
- 5 cm Hole 26 items
- 5 cm Hole with Twist Lock 1 item
- 5 cm Male Slip 5 items
- 5cm Coarse (SAE) Male Thread 1 item
- 5cm Fine (MPT) Male Thread 4 items
- 5.5 cm Fine (MPT) Male Thread 1 item
- 5.5 cm Hole 3 items
- 6 cm Hole 2 items
- 6 cm Hole with slots 1 item
- 6.4 cm Hole with Bevel 2 items
- 6.4 cm hole with Bevel 1 item
- 6.4cm Hole with Bevel 1 item
- 6.8 cm Hole 2 items
- 7 cm Female Fine Thread 1 item
- 7.5 cm Fine Thread 1 item
- 7.5 cm Hole 9 items
- 9 cm Hole 1 item
- 10 cm Hole 4 items
- 10.2 cm Hole with Rim 1 item
- 12 cm Hole 1 item
- 15.2 cm Hole 1 item
- 4 cm / 1.6 inch 1 item
- 8 cm / 3 inch 1 item
- 7 cm / 2.8 inch 1 item
- 9 cm / 3.5 inch 1 item
- 10 cm / 4 inch 3 items
- 10.4 cm / 4.1 inch 1 item
- 12 cm / 4.7 inch 2 items
- 13 cm / 5.1 inch 3 items
- 14 cm / 5.5 inch 3 items
- 15 cm / 5.9 inch 2 items
- 16 cm / 6.3 inch 1 item
- 17 cm / 6.7 inch 4 items
- 18 cm / 7.1 inch 4 items
- 19 cm / 7.5 inch 4 items
- 20 cm / 7.9 inch 7 items
- 21 cm / 8.3 inch 4 items
- 21.9 cm / 8.6 inch 1 item
- 22 cm / 8.7 inch 1 item
- 23 cm / 9.1 inch 3 items
- 25 cm / 9.9 inch 5 items
- 26 cm / 10.2 inch 4 items
- 27 cm / 10.6 inch 5 items
- 28 cm / 11 inch 1 item
- 29 cm / 11.4 inch 1 item
- 30 cm / 11.8 inch 6 items
- 30.3 cm / 11.9 inch 1 item
- 32 cm / 12.6 inch 3 items
- 33 cm / 13 inch 2 items
- 34 cm / 13.4 inch 4 items
- 35 cm / 13.8 inch 1 item
- 36 cm / 14.2 inch 2 items
- 37.5 cm / 14.8 inch 1 item
- 38 cm / 15 inch 4 items
- 39 cm / 15.4 inch 2 items
- 41 cm / 16.2 inch 2 items
- 44 cm / 17.3 inch 2 items
- 45 cm / 17.7 inch 2 items
- 46 cm / 18.1 inch 2 items
- 48 cm / 18.9 inch 4 items
- 50 cm / 19.7 inch 2 items
- 51 cm / 20.1 inch 1 item
- 54 cm / 21.3 inch 1 item
- 59 cm / 23.2 inch 1 item
- 60 cm / 23.6 inch 1 item
- 75 cm / 29.6 inch 2 items
- 77 cm / 30.3 inch 1 item
- 7 cm / 2.8 inch 2 items
- 9 cm / 3.5 inch 1 item
- 10 cm / 4 inch 5 items
- 11 cm / 4.3 inch 5 items
- 11.2 cm / 4.4 inch 1 item
- 12 cm / 4.7 inch 9 items
- 13 cm / 5.1 inch 16 items
- 14 cm / 5.5 inch 7 items
- 14.5 cm / 5.7 inch 1 item
- 15 cm / 5.9 inch 17 items
- 16 cm / 6.3 inch 1 item
- 16.2 cm / 6.4 inch 1 item
- 17 cm / 6.7 inch 2 items
- 18 cm / 7.1 inch 21 items
- 20 cm / 7.9 inch 9 items
- 21 cm / 8.3 inch 3 items
- 22 cm / 8.7 inch 8 items
- 25.6 cm / 10.1 inch 1 item
- 40022 1 item
- J200 1 item
- J400 1 item
- PP1271 1 item
- PP1604 1 item
- PP2002 1 item
- PP6903 1 item
- 30031 1 item
- 10501 1 item
- 20035 1 item
- 40011 1 item
- 40025 1 item
- 40057 1 item
- 40059 1 item
- 40061 1 item
- 40064 1 item
- 40101 1 item
- 40103 1 item
- 40104 1 item
- 40191 1 item
- 40201 1 item
- 40203 1 item
- 40206 1 item
- 40254 1 item
- 40260 1 item
- 40281 1 item
- 40301 1 item
- 40352 1 item
- 40353 1 item
- 40372 1 item
- 40505 1 item
- 40506 1 item
- 40508 1 item
- 40751 1 item
- 41001 1 item
- 42513 1 item
- 50153 1 item
- 50201 1 item
- 50272 1 item
- 50351 1 item
- 50353 3 items
- 50451 1 item
- 50452 1 item
- 50501 1 item
- 50503 1 item
- 50504 1 item
- 50651 1 item
- 50653 1 item
- 50753 1 item
- 50801 1 item
- 51002 1 item
- 51351 1 item
- 52511 1 item
- 52512 1 item
- 60204 1 item
- 60252 1 item
- 60257 1 item
- 60301 1 item
- 60304 1 item
- 60305 1 item
- 60355 1 item
- 60401 1 item
- 60402 1 item
- 60403 1 item
- 60453 1 item
- 60471 1 item
- 60502 1 item
- 60506 1 item
- 60521 1 item
- 60606 1 item
- 60752 1 item
- 61269 1 item
- 70251 1 item
- 70302 1 item
- 70321 1 item
- 70402 1 item
- 70404 1 item
- 70504 1 item
- 70505 1 item
- 70508 1 item
- 70511 1 item
- 70751 1 item
- 70752 1 item
- 70759 1 item
- 71002 1 item
- 71008 1 item
- 74010 1 item
- 74371 1 item
- 75017 1 item
- 77515 1 item
- 77517 1 item
- 80301 1 item
- 80451 1 item
- 80501 1 item
- 80502 1 item
- 80503NEW 1 item
- 80507 1 item
- 80651 1 item
- 80752 1 item
- 80753 1 item
- 80801 1 item
- 80803 1 item
- 80951 1 item
- 81002 1 item
- 81004 1 item
- 81203 1 item
- 81252 1 item
- 81254 1 item
- 4CH-20 1 item
- 4CH-21 1 item
- 4CH-24 1 item
- 4CH-30 1 item
- C-2305 1 item
- C-3310AM 1 item
- C-4313 1 item
- C-4310 1 item
- C-4320 1 item
- C-4325 1 item
- C-4326 2 items
- C-4335 1 item
- C-4401 1 item
- C-4405 1 item
- C-4602 1 item
- 4CH-925 1 item
- 4CH-949 1 item
- C-4950 1 item
- C-4975 1 item
- C-4995 1 item
- 5CH-203 1 item
- C-5300 1 item
- C-5345 1 item
- 5CH-35 3 items
- C-5351 1 item
- 5CH-352 1 item
- C-5374 1 item
- C-5396 1 item
- C-5397 1 item
- 5CH-45 1 item
- 5CH-502 1 item
- C-5624 1 item
- 5CH-752 1 item
- 6CH-26 1 item
- 6ch-352 1 item
- C-6430 1 item
- C-6450 1 item
- 6CH-47 1 item
- 6CH-502 1 item
- C-6600 1 item
- 6CH-75 1 item
- 6CH-924 1 item
- 6CH-940 1 item
- 6CH-941 1 item
- 6CH-942 1 item
- 6CH-960 1 item
- 7CH-322 1 item
- C-7330 1 item
- C-7350 1 item
- C-7367 1 item
- C-7375 1 item
- 7CH-40 1 item
- C-7400 1 item
- C-7437 1 item
- C-7440 1 item
- C-7451 1 item
- C-7477 1 item
- C-7479 1 item
- C-7499 1 item
- 7CH-50 1 item
- C-7626 1 item
- C-7656 1 item
- C-7676 1 item
- 7CH-752 1 item
- 8CH-102 1 item
- 8CH-202 1 item
- C-8325 1 item
- C-8326 1 item
- C-8327 1 item
- C-8341 1 item
- C-8350 1 item
- C-8380 1 item
- C-8399 1 item
- C-8409 1 item
- C-8450 1 item
- C-8465 1 item
- C-8475 1 item
- C-8600 1 item
- C-8610 1 item
- 8CH-950 1 item
- C-9405 1 item
- PSB3.5 1 item
- PBW4PAIR 1 item
- PBW5PAIR 1 item
- PMA10 1 item
- PWW10 1 item
- PRB17.5SF 1 item
- PTL18P4 1 item
- PA20 1 item
- PSANT20P3 1 item
- PA25 1 item
- PGS25P4 1 item
- PHC25P4 1 item
- PJW25 1 item
- PRB251N 1 item
- PRB25SF 1 item
- PTL25P4 1 item
- PTL25W-SV-P4 1 item
- PWL25P4 1 item
- PWW25SV-P3 1 item
- PAS35-F2M 1 item
- PSG 27.5 1 item
- PAS40-F2M 1 item
- PAS50SV-F2M 1 item
- PDM30 1 item
- PMA30-2002-R 1 item
- PWK30-4 1 item
- PLAS35 1 item
- PPM35SC-F2M 1 item
- PRB35-1N 1 item
- PMA40-F2M 1 item
- PPF40 1 item
- PVT40P4 1 item
- PCM44-4 1 item
- PMA45 1 item
- PTL47W-P4 1 item
- PA50 1 item
- PBF50 1 item
- PCD50 1 item
- PCS50N 1 item
- PFF50P 1 item
- PJW50 1 item
- PLBS50 1 item
- PMAX50P4 3 items
- PPM50SC-F2M 1 item
- PRB50-1N 1 item
- PTL50W-SV-P4 1 item
- PTL50XW-OB-XP 1 item
- PVT50 1 item
- PVT50W 1 item
- PWK50 1 item
- PWW50L 1 item
- PWW50P3 1 item
- PWW50SHORT 1 item
- PAP50-4 1 item
- PCD50N 1 item
- PCAL60-F2M 1 item
- PJW60TL-OT-F2S 1 item
- PWK65 1 item
- PA75 1 item
- PCD75 1 item
- PCS75N 1 item
- PD075-2000 1 item
- PLBS75 1 item
- PRB75 1 item
- PTL75XW 1 item
- PWW75 1 item
- PA75SV 1 item
- PCD75N 1 item
- PA80 1 item
- PCST80 1 item
- PSD85-2002 1 item
- PA90 1 item
- PSD95-F2L 1 item
- PA100 1 item
- PCAL100 1 item
- PCD100 1 item
- PCM100SV 1 item
- PLBS100 1 item
- PWW100 1 item
- PWW100P3 1 item
- PCST120 1 item
- PUST120-F2M 1 item
- PSD125-2000 1 item
- PSD125-2006 1 item
- PSD125U 1 item
- PA225 1 item
- PWK2540 1 item
- FC-0121 1 item
- FC-0125 1 item
- FC-0131 1 item
- FC-0141 1 item
- FC-0172 1 item
- FC-0195 1 item
- FC-0196 1 item
- FC-0300 3 items
- FC-0311 1 item
- FC-0315 3 items
- FC-0359 1 item
- FC-0360 1 item
- FC-0361 1 item
- FC-0420 1 item
- FC-0435 1 item
- FC-0491 1 item
- FC-0680 1 item
- FC-0684 1 item
- FC-1003 2 items
- FC-1007 1 item
- FC-1220 1 item
- FC-1320 1 item
- FC-2130 1 item
- FC-2375 1 item
- FC-2385 1 item
- FC-2386 1 item
- FC-2387 1 item
- FC-2390 1 item
- FC-2395 1 item
- FC-2401 1 item
- FC-2780 1 item
- FC-2790 1 item
- FC-2800 1 item
- FC-2810 1 item
- FC-2812 1 item
- FC-2970 1 item
- FC-2971 1 item
- FC-2972 1 item
- FC-3053 1 item
- FC-3059 1 item
- FC-3077 1 item
- FC-3128 1 item
- FC-3284 1 item
- FC-3310 1 item
- FC-3694 1 item
- FC-3915 1 item
- FC-3960 1 item
- FC-3963 1 item