Inflatable Hot Tub Filters: How to Save Money & Avoid Mistakes

Do you need to replace your spa filter? You can buy cartridges online right here. Yes, I know you’ve been dreaming of finding that perfect cartridge. Plus, the best ways to save time and money, of course.

Inflatable Hot Tub Filters and How to Save Money

Intex Hot Tubs:

If you have an Intex Purespa or Purespa Plus, you’ll need Type S1 cartridges (29001E). These fit Intex inflatable models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, 28413E and 28453E.

When you buy in bulk (like a 12-pack), you can keep more money in your pocket and instantly save about 25% or more. Over time, this cost savings adds up. Not to mention, it cuts down on your shopping time.

How to Make Your Filters Last Longer:

In addition, you can extend the life of the Intex Pure Spa cartridges you buy and save even more money. Do this by regularly flushing them with a hose once a week using the high pressure stream setting. Watch this video for a super effective way to rinse the strainers:


Note: When strainers become discolored to the point where rinsing does not clean them, this is when you want to replace them. So, if you find that the screens are getting discolored, you may want to rinse them more frequently.

You can also find generic brand options, but Intex makes no guarantees that they will fit. Some customers also say that you get what you pay for as far as quality. For reference, the cost difference ends up being about 50 cents per cartridge between Intex and generic.

Coleman Saluspa & Bestway:

Save Money on Coleman/Bestway Replacement Spa Filters

Bestway and Coleman hot tubs use the same universal model (Type VI cartridges).

Similar to the Intex replacement above, customers recommend using the manufacturer brand rather than off-brand. In my experience, off brands don’t always fit well, clog up faster and don’t last as long.

Wave Spa:

These cartridges fit all Wave Atlantic, Pacific, Atlantic Plus, California and Rome models purchased in 2020 and later. Plus, you can get them in packs of 2, 4, 8 and 16.


Aquaspa filters fit all of their inflatable models from 2-person through 6-person sizes. Plus, they feature innovative polyester “Dirt-Locking” pleat material that traps more contaminants than regular fabric. For example, it efficiently removes hair, leaves, dust, sediment, sand, etc..

5 Common Mistakes to Avoid When Replacing Cartridges:

Different Spa Filter Cartridges Sitting on Edge of Hot Tub
  1. Choosing the Wrong Cartridge: Make sure you have the correct model for your spa.
  2. Not Cleaning the Filter Compartment: A dirty compartment can affect filtration. Keep it clean.
  3. Over-Tightening the Cover: Over-tightening the compartment cover can damage the housing or the cover itself. Hand-tighten it securely but not excessively.
  4. Running the Jacuzzi Without Priming: Always prime the new filter by running the spa 2-3 minutes to remove air bubbles.
  5. Neglecting Regular Maintenance: Regularly inspect the cartridge and replace it when it shows signs of wear. Clean it between replacements.

After 15 years in the jacuzzi business, my best recommendation for saving money is to flush them regularly with clean water. The cartridges will last longer and keep your water cleaner, so you can get back to relaxing.

Last Updated June 5, 2024


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