Quality Spa Filters

Spa Filters Direct offers the best selection for spa filters and spa filter cartridges. We've made the process of finding the right hot tub filter easy and painless.

We offer a 100% Price Match Guarantee! If you can find a lower advertised price for any spa filter we have in stock we'll match it!

All orders over $100 receive FREE shipping, stock up on all you spa filtering needs and save big!

Don't be fooled by the Spa Supply "Super Stores". Spa filters are what we specialize in. We work hard to bring you the best products, lowest prices, and amazing customer service.

Easy Filter Finder

Hot Tub Filter
Hint: You can sometimes find replacement numbers stamped on your filter end cap.

Easy Filter Finder Method ONE:

If you already know a replacement number for your spa filter cartridge, please:

1. Enter the replacement hot tub filter number here

2. Click Find-My-Filter


Dirty Filters Waste Money

SpaFilters.com recommends that you change your spa filters at least one time a year! New hot tub filters protect your health AND your pocketbook. The spa filter is like changing the oil in your car, the whole equipment system depends on getting clean water flowing to it. If the hot tub equipment is not getting enough flow caused by old filters it will cause a number of repair issues. Old and dirty filters are the number one issue found on all hot tub service calls. Dirty hot tub filters can even void your warranty. So, it pays to check your spa filter once or twice monthly.

If your spa filter or hot tub filters are more than two years old, please toss them no matter how they may look. This is because your hot tub filter is made of a fibrous material that gradually loosens over time creating ever-larger spaces for particles to push through and gunk up your pump. It pays to be ruthless on this one. Hot tub pumps are way more expensive than spa filters.

Spa Filter
This method will most likely lead to multiple results from which you can compare filters.

Easy Filter Finder Method TWO:
The "Where's Waldo?" Method

If you are somewhat familiar with your hot tub filter, you can take a shot at identifying it within a small crowd of spa filters within your spa brand family (examples: Sundance spa filters, Hot Spring Spa Filters, Jacuzzi Spa Filters, etc.) Simply:

1. Choose your spa manufacturer

2. Click Find-My-Filter

Hot Tub Filter
Please measure carefully but be aware that filter sizing can vary slightly. Click here for tips on how to measure your spa filter.

Easy Filter Finder Method THREE:
The Sure Thing

The surest way to identify your spa filter is to remove, inspect and measure your existing filter.

  • Read general information on removing and inspecting your hot tub filter.

  • PRINT THE FIND-MY-SPA-FILTER FORM (PDF) featuring tips on how to measure your spa filter. Then, take the form with you to your spa (so you don't get that wet, slimy spa filter anywhere near your computer)!

1. Select the name of your spa manufacturer from one of the drop down menus below.


2. Find the image below that best matches each end cap of your spa filter.

Keep in mind:
A. Some end caps look similar. Choose carefully.
B. Inner hole diameter sizes on actual filters vary widely from the photographs below.

1. Open
Hot Tub filter end caps
2. Closed
Spa filter end caps
3. Closed End with
String Handle
Hot Tub filter end caps
4. Castle
Spa filter end caps
5. Step
Hot Tub filter end caps
6. Handle End
Spa filter end caps
7. End Cap w/Slots
Hot Tub filter end caps
8. Male Slip Fitting
Spa filter end caps
9. Male Threaded Fitting
Hot Tub filter end caps
10. SAE
Spa filter end caps

4. If you know it, enter your spa filter's overall diameter.
Keep in mind:
Diameter measurements can vary slightly. If you enter a diameter, and get unsatisfactory search results the first time, change the diameter measurement up or down slightly between filters.

Overall Diameter:

5. Click Find-My-Filter

High Quality Spa Covers

If you are looking for a quality source of spa covers or hot tub covers we suggest Hottubworks.com. They are the leading producer of quality spa covers and parts with over 300,000 customers served. A quality spa cover will help lower your heating costs, improve the safety of your hot tub, and keep the top clean which helps your spa filters last longer which we think it is important given our affection for spa filters and hot tub filters.

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