10 Best Hot Tub Filter Cleaner of 2025

Tested and Reviewed: Top 10 Hot Tub Filter Cleaner deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

HTH

HTH Spa 86123 Filter Cleaner, Spa & Hot Tub Chemical Deep Cleans Filter, Extends Filter Life, 16 oz

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Editor's bottom line:

“This hot tub filter cleaner is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

BENEFIT: Keep your spa filter clean with this easy-to-use filter cleaner
IMPROVES PERFORMANCE: Deep cleans all filter types; Extends life of filter
CLEAR WATER: A filter that works better ensures your spa or hot tub water is clean and clear
COMPATIBLE WITH ALL SPAS: HTH Spa Filter Cleaner is great for all spas, including bromine, chlorine and biguanide
YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Filter Cleaner as part of your regular HTH Spa care routine, or every 90 days when you change out your spa water

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Picked by 215 people today

9.5

Save 9%

SpaGuard

SpaGuard Filter Cleaner (1 Qt)

9% OffFree Shipping

Main Highlights

Easy to use sprayer applicator
Helps keep water clear by promoting better filtration

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9.5

Black Diamond Stoneworks

Black Diamond Stoneworks Ultimate Spa Filter Cleaner Fast-Acting Spray. Instant Clean for Hot Tub & Pool Filters Leaving Behind no Sticky Residue. Prolongs Filter Life and Pool Equipment. No Soaking

Free Shipping

Main Highlights

INSTANT RESULTS! Just Spray On The Filter, And Rinse Away The Soil! Will Remove Body Oils, Suntan Lotion, And Other Organic Material. Get The Most Out Of Your Pool and Spa Filters Using ULTIMATE Spa Filter Cleaner.
IMPROVES FILTER LIFE: and It Will Improve The Efficiency Of The Filter As Well As Keeping The Water Crystal Clear. A Clean Filter Will Saves You Money.
FAST RINSING: And Leaves No Slimy Residue That Can Cause Foam And Cloudy Water. No More Waiting Hours Or Even Overnight To Get The Filter Clean.
VERSATILE: Whether Your Spa, Hot Tub, Or Pool Filter Needs a Deep Cleaning, Or You Want To Maintain A Healthy pH Level In The Water, ULTIMATE Spa Filter Cleaner Will Keep Your Spa In Tip-Top Condition. Ideal For Commercial And Home Use, This Solution Is Meant For Once-Per-Week use To Keep The Water Perfect.
Homegrown Quality Assurance: From our family to yours, every bottle of Our Products is a testament to American craftsmanship. Proudly made in San Clemente, CA, our products stand as a beacon of quality in eco-conscious household care.

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9.2

Save 9%

LEISURE TIME

Leisure Time S Instant Cartridge Cleaner for Spas and Hot Tubs, 1-Pint

9% OffFree Shipping

Main Highlights

BENEFITS: Quickly removes oil, grease and calcium from filters
USE: Great to use when there isn't time to soak a filter cartridge
COMPATIBILITY: Works with all sanitizers including chlorine, bromine, ozone and biguanide
FEATURES: Part of Leisure Time's Simple Spa Care program; Blue color indicates coverage
INCLUDES: One 1-pint bottle of Leisure Time Instant Cartridge Clean
Quickly removes oil, grease and calcium from filters
Great to use when there isn't time to soak a filter cartridge
Blue color indicates coverage

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9.0

Tillbrook

Hot Tub Filter Cleaner - 6 Month Supply - 4 to 8 Uses - 32 oz Spa Filter Cartridge Cleaner - Hot Tub & Pool Filter Cleaner Soaking Solution - No Residue or Foam - Restores Filter - Safe & Non-Toxic

Free Shipping

Main Highlights

EXCEPTIONAL RESULTS: Introducing Tillbrook Hot Tub & Spa Filter Cleanerthe best choice for removing dirt, grease, hard water buildup, oils, sunscreen, and residue in spa filters. Its essential to clean hot tub filters at least once a month to ensure proper functioning of your hot tub equipment and to maintain clean water.
6 MONTH SUPPLY: Our concentrated formula is easy to use and provides remarkable value with 4-8 cleanings per bottle depending on filter size and grime level.
SCIENTIFICALLY ENGINEERED: Our advanced cleaning solution is carefully crafted with powerful, all-natural ingredients that removes dirt, grease, and other unwanted buildup, ensuring longevity and optimal performance without damaging your equipment or contaminating your hot tub water.
UNIVERSAL COMPATIBILITY: Our hot tub filter cleaner can be used with cartridge, sand, and DE filters, as well as pool filters.
STRESS-FREE MAINTENANCE: No one wants dirty water or a broken hot tub pump keep a clean and well-functioning spa by deep cleaning your hot tub filter every month, and consider light, spray cleanings each week and between guests.
DEEP CLEAN SOAK: Spray filter with water to remove initial layer of buildup. Then mix ½ cup (4 oz) of concentrate per gallon of water. Mix enough solution to submerge hot tub filter. Leave for 2 hours, then rinse vigorously until solution is fully removed from filter. Soak overnight for especially dirty filters.
INSTANT SPRAY CLEAN: Mix ½ cup of concentrate with water in a 32 oz spray bottle, and use this as a quick, weekly maintenance option for reviving your hot tub filter. Simply spray filter with water, then spray with solution and wait 5-15 minutes, then rinse filter thoroughly with water.
MADE IN THE USA: Tillbrook embodies true American craftsmanship. Proudly manufactured in the USA, we uphold the highest ethical and environmental standards in every product we create.

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Best Value

8.8

Save 22%

MAV AquaDoc

Hot Tub Filter Cleaner Soak, Pool Filter Cleaner & Pool Cartridge Cleaner - Spa Filter Cleaner Soak & Spa Filter Cleaning Solution for HotTub Cartridges. Easy to Use Filter Degreaser - AquaDoc PT

22% OffFree Shipping

Main Highlights

Hot Tub Filter Cleaner: Soak your filter in our top quality spa filter cleaning solution to increase the efficiency and lifespan of your spa and hot tub filter. Our product is specifically designed to be a filter cleaner for hot tubs and spas.
Fast Acting, Easy To Use Spa Filter Cleaner: We specialize in ensuring your hot tub cartridge filter cleaner is easy to use. Simply soak your filter in our hot tub cleaning solution for 60 minutes and put the clean filter back into its compartment in your spa, hot tub or pool. No need to soak overnight.
Cleans Sand, Cartridge, And DE Filters: When you choose an AquaDoc filter cleaner, you're making the right spa choice. Our filter cleaner for hot tubs is specially designed to clean Cartridge Filters, Sand filters, and Diatomaceous Earth filters.
Professional Grade, Made In The USA: We provide a professional grade hot tub filter cleaning soak solution for use in both commercial and home spas, hot tubs, and pools. Proudly made in the USA, you can rest easy knowing we use the highest quality materials, and youre helping to provide income to local US citizens.
Enjoy Your Hot Tub Leisure Time: Filter Cleaner for Hot Tubs by MAV AquaDoc allows you to enjoy your leisure time. Our spa filter cleaner is designed to remove any headaches associated with cleaning your hot tub, spa, or pool.

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8.6

ACTIVE

ACTIVE Spa Hot Tub Filter Cleaner - 32oz (2-4 Uses) Cleaning Soaking Solution, Hot Tubs & Pool Cartridge Cleaner, Natural Power Degreaser to Revive & Prolong O-Filters Life Time - Made in USA

Free Shipping

Main Highlights

Best Value Cleaners: ACTIVE Spa Filter Cleaner for Hot Tub comes in a Concentrated 32 oz Liquid. Depending on the size of your cartridge filter, this will last for 2+ Treatments.
Easy Overnight Soak: Dilute ACTIVE Pool Filter Cleaner in 4 Gallon of Water per 16oz and soak filter for 12 Hours. Compare to Tablets, Spray,or other "Instant" Formulas that don't give your filer a thorough wash
Extend Cartridge Life: Use ACTIVE Pool Cartridge Filter Cleaner is an eco conscious choice to wash and guard your swim pool or hot tub filter, saving you from countless replacements.
Wide Filter Compatibility: ACTIVE Hot Tub supplies clean all pleated filter cartridge such as VI, IV, S1, D. Compatible with all brands including Intex, Pleatco, Guardian, Filbur, Future, Bestway, Spaguard, Poolpure, HTH, Tier1, Unicel, Hotspring, Marvel and More
Proudly Made in USA: ACTIVE Professional Grade Pool Filter Cartridge Cleaner designed & manufactured in United States with Chemistry-Backed ingredients for your trust.

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8.3

LEISURE TIME

Leisure Time O Filter Clean Cartridge Cleaner for Spas and Hot Tubs, 1-Pack

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Main Highlights

BENEFITS: Improves the efficiency and life of the filter
USE: Soak solution overnight for maximum effect; use when draining and refilling spa or hot tub
COMPATIBILITY: Chlorine, bromine, ozone and mineral purification systems
FEATURES: Soak-and-rinse formula for cartridge, D.E. and sand filters; item is not for sale in Catalina Island
INCLUDES: 32 fl oz of spa cleaning chemicals
Removes oil, grease, dirt and soap
Overnight soak will complete removal of all contaminants
Great on filter cartridge and de filters
This item is not for sale in Catalina Island

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8.1

Spa Depot

Spa Depot Power Soak Hot Tub & Pool Filter Cartridge Cleaner - 2 x 1 lb. Bottles

Main Highlights

Deep-Cleans pleated spa/pool filter cartridges
Professional strength with enzymes
2 x 1 lb. bottles
Can't cause water foaming
Economical to use

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8.1

Save 6%

LEISURE TIME

Leisure Time O-02 Filter Clean Cartridge Cleaner for Spas and Hot Tubs, 1-Quart, 2-Pack

6% Off

Main Highlights

Packaging may vary
For all types: cartridge, sand, and D.E
For cartridge filters: Place cartridge into a bucket and add 1 quart of this product and 5 gallons water
Soak 30 to 60 minutes

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Our Best Overall Choice

Best Choice

9.7

HTH

HTH Spa 86123 Filter Cleaner, Spa & Hot Tub Chemical Deep Cleans Filter, Extends Filter Life, 16 oz

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

BENEFIT: Keep your spa filter clean with this easy-to-use filter cleaner
IMPROVES PERFORMANCE: Deep cleans all filter types; Extends life of filter
CLEAR WATER: A filter that works better ensures your spa or hot tub water is clean and clear
COMPATIBLE WITH ALL SPAS: HTH Spa Filter Cleaner is great for all spas, including bromine, chlorine and biguanide
YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Filter Cleaner as part of your regular HTH Spa care routine, or every 90 days when you change out your spa water

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10 Best Hot Tub Filter Cleaner of 2025

Tested and Reviewed: Top 10 Hot Tub Filter Cleaner deals with expert ratings from 8.1 to a perfect 10

HTH

HTH Spa 86123 Filter Cleaner, Spa & Hot Tub Chemical Deep Cleans Filter, Extends Filter Life, 16 oz

Editor's bottom line:

Main Highlights

SpaGuard

SpaGuard Filter Cleaner (1 Qt)

Main Highlights

Black Diamond Stoneworks

Black Diamond Stoneworks Ultimate Spa Filter Cleaner Fast-Acting Spray. Instant Clean for Hot Tub & Pool Filters Leaving Behind no Sticky Residue. Prolongs Filter Life and Pool Equipment. No Soaking

Main Highlights

LEISURE TIME

Leisure Time S Instant Cartridge Cleaner for Spas and Hot Tubs, 1-Pint

Main Highlights

Tillbrook

Hot Tub Filter Cleaner - 6 Month Supply - 4 to 8 Uses - 32 oz Spa Filter Cartridge Cleaner - Hot Tub & Pool Filter Cleaner Soaking Solution - No Residue or Foam - Restores Filter - Safe & Non-Toxic

Main Highlights

MAV AquaDoc

Hot Tub Filter Cleaner Soak, Pool Filter Cleaner & Pool Cartridge Cleaner - Spa Filter Cleaner Soak & Spa Filter Cleaning Solution for HotTub Cartridges. Easy to Use Filter Degreaser - AquaDoc PT

Main Highlights

ACTIVE

ACTIVE Spa Hot Tub Filter Cleaner - 32oz (2-4 Uses) Cleaning Soaking Solution, Hot Tubs & Pool Cartridge Cleaner, Natural Power Degreaser to Revive & Prolong O-Filters Life Time - Made in USA

Main Highlights

LEISURE TIME

Leisure Time O Filter Clean Cartridge Cleaner for Spas and Hot Tubs, 1-Pack

Main Highlights

Spa Depot

Spa Depot Power Soak Hot Tub & Pool Filter Cartridge Cleaner - 2 x 1 lb. Bottles

Main Highlights

LEISURE TIME

Leisure Time O-02 Filter Clean Cartridge Cleaner for Spas and Hot Tubs, 1-Quart, 2-Pack

Main Highlights

Our Best Overall Choice

HTH

HTH Spa 86123 Filter Cleaner, Spa & Hot Tub Chemical Deep Cleans Filter, Extends Filter Life, 16 oz

Editor's bottom line:

Main Highlights

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