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418 products found
Pentair Fiberglass D.E. Filter, FNS Plus | 48 Square Feet | EC-180008
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Pentair Fiberglass D.E. Filter, FNS Plus | 48 Square Feet | EC-180008
$1,379.00
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Hayward SwimClear Multi-Element Cartridge Filter | 225 sq. ft. | C2030
Hayward SwimClear Multi-Element Cartridge Filter | 225 sq. ft. | C2030
$1,357.15
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Pentair Clean & Clear RP Cartridge Filter | 150 Sq. Ft. | EC-160355
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Pentair Clean & Clear RP Cartridge Filter | 150 Sq. Ft. | EC-160355
Sale $899.00
$835.00
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Hayward D.E. ProGrid Pool Filter | 60 sq. ft. | Requires Backwash Valve - Not Included | W3DE6020
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Hayward D.E. ProGrid Pool Filter | 60 sq. ft. | Requires Backwash Valve - Not Included | W3DE6020
$1,709.00
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Hayward SwimClear Multi-Element Cartridge Filter | 525 sq. ft. | W3C5030
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Hayward SwimClear Multi-Element Cartridge Filter | 525 sq. ft. | W3C5030
$2,249.00
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Hayward SwimClear Multi-Element Cartridge Filter | 425 sq. ft. | W3C4030
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Hayward SwimClear Multi-Element Cartridge Filter | 425 sq. ft. | W3C4030
$1,819.00
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Pentair Quad DE High Flow Filter | 100 Sq Ft | 160 GPM | EC-188594
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Pentair Quad DE High Flow Filter | 100 Sq Ft | 160 GPM | EC-188594
$2,109.00
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Hayward D.E. ProGrid Pool Filter | 48 sq. ft. | Requires Backwash Valve - Not Included | W3DE4820
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Hayward D.E. ProGrid Pool Filter | 48 sq. ft. | Requires Backwash Valve - Not Included | W3DE4820
$1,559.00
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Hayward Pro Series Sand Filter 2" Top Mount Valve 30" Tank | W3S310T2
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Hayward Pro Series Sand Filter 2" Top Mount Valve 30" Tank | W3S310T2
$1,219.00
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 22" Tank | W3S220T
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 22" Tank | W3S220T
$669.00
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Waterway Crystal Water Cartridge Filter | 425 Sq. Ft. 150 GPM | 570-0425-07
Waterway Crystal Water Cartridge Filter | 425 Sq. Ft. 150 GPM | 570-0425-07
$985.78
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Pentair Sand Dollar SD80 26" Top Mount Sand Filter with Clamp Style 1.5" Multiport Backwash Valve | 3.5 Sq. Ft. | EC-145333
Pentair Sand Dollar SD80 26" Top Mount Sand Filter with Clamp Style 1.5" Multiport Backwash Valve | 3.5 Sq. Ft. | EC-145333
$689.00
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Pentair Clean & Clear RP Cartridge Filter | 200 Sq. Ft. | EC-160353
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Pentair Clean & Clear RP Cartridge Filter | 200 Sq. Ft. | EC-160353
Sale $1,049.00
$999.00
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Hayward D.E. ProGrid Pool Filter | 24 sq. ft. | Requires Backwash Valve - Not Included | DE2420
Hayward D.E. ProGrid Pool Filter | 24 sq. ft. | Requires Backwash Valve - Not Included | DE2420
$779.30
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Waterway Crystal Water D.E. Filter | 60 Sq. Ft. 120 GPM | 570-0060-07
Waterway Crystal Water D.E. Filter | 60 Sq. Ft. 120 GPM | 570-0060-07
$1,004.95
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 20" Tank | W3S210T
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 20" Tank | W3S210T
$569.00
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Hayward Perflex DE Modular Above Ground Pool Filter with Clamp | 25 sq. ft. | 50 GPM | W3EC50AC
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Hayward Perflex DE Modular Above Ground Pool Filter with Clamp | 25 sq. ft. | 50 GPM | W3EC50AC
$729.00
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Hayward Pro Series Sand Filter 2" Top Mount Valve 27" Tank | W3S270T2
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Hayward Pro Series Sand Filter 2" Top Mount Valve 27" Tank | W3S270T2
$819.00
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 24" Tank | W3S244T
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Hayward Pro Series Sand Filter 1.5" Top Mount Valve 24" Tank | W3S244T
$689.00
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Hayward Pro Series Sand Filter System | 1.75 Sq Ft 1.5HP Power-Flo Matix Pump | W3S180T93S
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Hayward Pro Series Sand Filter System | 1.75 Sq Ft 1.5HP Power-Flo Matix Pump | W3S180T93S
$859.00
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D.E. Filters
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Pool Filters for Sale Online

The best selection of pool 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.) pool 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 necessary 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.

Different Types of Pool Filters

Pool filters 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 commercial pool. To understand your choices when it comes to pool filters, it's good to first get a better understanding of how each filter type works.

Cartridge Filters

Cartridge pool 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 pool 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 pool 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 pool 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. pool filter will eventually need to be replaced.

Sand Filters

Because of their simple, effective, and relatively low maintenance needs, sand pool 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 pool 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 pool filters are the least effective filter type, filtering about 20 microns at best.
 
Pool Supply Unlimited has cartridge pool filter and sand pool filter systems for above ground pools in a pool filter and pool 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

Which Pool Filter is Best for My Swimming Pool?

Which Pool Filter is Best for My Swimming Pool?

As you probably know, pool filters are designed to aid in keeping pool water clean by trapping dirt, debris and other such elements. But there are a few different methods to pool filtration - each with their own advantages and shortcomings.

What Replacement Filter Cartridge Do I Need?

What Replacement Filter Cartridge Do I Need?

Not sure what model you need to replace that dirty cartridge in your filter? Here are some tips to take away the confusion and get the problem solved.

How To Add D.E. Powder To Your Pool

How To Add D.E. Powder To Your Pool

If you own a D.E. Filter or are planning on investing in one as the water filtration system for your swimming pool you will at some point or another need to add D.E. powder to your pool. This blog post provides a brief overview of what D.E powder is and how it works and a detailed step by step guide for safely adding D.E. powder to your pool.

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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 San Antonio, TX and can land most products to your door (within the 48 contiguous states) in less than a week.
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