Home Pool Pool & Spa Filters
NOTICE: The Texas weather emergency has caused nationwide stock-outs on most products. This includes complete goods and especially parts and plumbing supplies. There are long shipping delays on the few products we do have in stock. Please contact us to ask about availability. Phone calls are being answered as fast as we can or you can use the Live Chat for the quickest response.

Pool & Spa Filters

We offer a full line of pool and spa filters, accessories and more; including Cartridge, Diatamatous Earth (DE), and Sand Filters for any size inground or above ground pool or spa. Pool filters remove impurities from the water, keeping the pool sanitary, clear, and sparkling.

Looking for replacement DE Grids or Cartridges for your Filter?

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Pool & Spa Filters
The best selection of pool and spa filters to remove unwanted impurities and debris from your pool’s water are at Pool Supply Unlimited. Our sand, cartridge, and diatomaceous earth (D.E.) filters from leading pool brands like Pentair give you plenty of options when deciding which pool filter is best for your swimming pool.
 
Pool Supply Unlimited also carries the pool chemicals and pool supplies you need to keep your pool clean and sanitized, whether it’s open for the summer or all year long.
 
Types of Pool & Spa Filters
Pool and spa filters gently pull the water through filtration media to catch and trap any dirt, sediment, and other elements before pushing the clean water back into the pool. The actual materials used to filter out the water and trap dirt and sediment will vary, as will the mechanics of the pool filters themselves.
 
In some cases, your pool type or location will require a specific type of filter, and in other cases, you'll just want to decide on what's best for your needs. For instance, what’s best for a single-family home may not be what’s best for a large apartment complex. To understand your choices when it comes to pool filters, it's good to first get a better understanding of how each filter type work.
 
Cartridge Filters
Cartridge filters work by passing water through a pleated cartridge, collecting unwanted dirt and debris while the newly cleaned water continues through to the pool. Cartridge filters can filter down to about 10 microns. Cleaning the internal cartridge is fairly simple, just take it out and rinse it off making sure to properly clean between the pleats before returning to the filter. Cartridge filters are recommended for public pools or pools in busy apartment complexes and hotels.
 
D.E Filters
Diatomaceous earth (D.E.) pool filters use diatomaceous earth to coat filter grids that collect dirt and sediment to give your pool the thorough cleaning it needs. D.E filters can filter down to about 5 microns, the lowest micron rating of any style pool filter, making them a great choice for the best water clarity. Like cartridges, the D.E. filter grids inside your D.E. filter will eventually need to be replaced.
 
Sand Filters
Because of their simple, effective, and relatively low maintenance needs, sand filters are one of the most popular swimming pool filter options available today. As pool water is routed through a sand-filled pressure vessel, dirt accumulates between sand particles. Sand filters are relatively low maintenance with sand only having to be replaced every few years, but do require “back-washing” to clean the filter. Sand filters are the least effective filter type, filtering about 20 microns at best.
 
Pool Supply Unlimited has cartridge filter and sand filter systems for above ground pools in a filter and pump combination.
 
No matter what your pool and spa filter needs, Pool Supply Unlimited has the best selection of pool and spa filters for you to choose from.
RELATED ARTICLES
How To Choose The Right Size Pool Filter
How To Choose The Right Size Pool Filter
Like shopping for most major pool equipment, it can be hard to understand the correct way to determine what model, size, brand, etc. equipment is best for you and your pool. In this post we go over the three types of filters and how to determine what size filter your pool needs.
Zeobrite: The Non-Toxic, Environmentally Safe Alternative to Traditional Silica Sand Media
Zeobrite: The Non-Toxic, Environmentally Safe Alternative to Traditional Silica Sand Media
When it comes to keeping the “green” out of your pool, many people, including pool professionals, are turning to a Zeobrite. Learn more about this non-toxic, environmentally safe product that is quickly becoming the go-to product for superior filtration and water clarity.
How to Clean Your Pool Filter
How to Clean Your Pool Filter
If your pump is the heart of your pool or spa the filter is its kidneys. Daily, your filter removes dirt, oil, organic and inorganic substances. Having clean, healthy water is dependent on your filter operating at its peak performance and that is with a clean filter.
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ABOUT THE STORE
Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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