Pool Filters

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Unicel C-9405

Unicel C-9405

Unicel Series 9000 Filter Cartridge for Pools, 50 Sq. Ft.

Our Price: $42.20
as low as: $39.25

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Unicel UHD-SR100

Unicel UHD-SR100

Unicel Series 8000 Filter Cartridge for Pools, 100 Sq. Ft.

Our Price: $63.40
as low as: $58.96

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Hayward GMX600NM

Hayward GMX600NM

Hayward Pro Series Flange Clamp for Pool Filters

Regular Price: $33.99
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Hayward DEX2400S

Hayward DEX2400S

Hayward Pro Series Air Relief Valve/Gauge Adapter Assembly with O-Ring for Pool Filters

Regular Price: $23.99
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Unicel C-8417

Unicel C-8417

Unicel Series 8000 Filter Cartridge for Pools, 175 Sq. Ft.

Our Price: $97.90
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Hayward DE2400PAK2CS

Hayward DE2400PAK2CS

Hayward SwimClear Filter Plumbing Kit for C2025-C5025

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Pentair PNSD0060DO1260

Pentair PNSD0060DO1260

Pentair Sand Dollar Aboveground Sand Filter System, 1.5 HP - 2.3 Sq. Ft Filter Area

Our Price: $395.46
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Pentair PNEC0090OF2260

Pentair PNEC0090OF2260

Pentair EasyClean Aboveground D.E. Filter System, 1.5 HP - Two-Speed - 30 Sq. Ft Filter Area

Our Price: $594.99
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Pentair PNCC0050OD1160

Pentair PNCC0050OD1160

Pentair Clean & Clear Aboveground Cartridge Filter System, 3/4 HP Pump - 50 Sq. Ft Filter Area

Our Price: $387.51
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Hayward GMX600F

Hayward GMX600F

Hayward Pro Series Sand Filter Valve Tank O-ring

Regular Price: $13.99
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Pentair 160316

Pentair 160316

Pentair Clean and Clear Cartridge Filter, 100 Sq. Ft.

Our Price: $355.99
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Pentair PNEC0090OF1160

Pentair PNEC0090OF1160

Pentair EasyClean Aboveground D.E. Filter System, 1.5 HP - 30 Sq. Ft Filter Area

Our Price: $540.99
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Unicel C-7626

Unicel C-7626

Unicel Series 7000 Filter Cartridge for Pools, 25 Sq. Ft.

Our Price: $21.10
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Pentair 27002-0150S

Pentair 27002-0150S

Pentair Sta-Rite Pool Cartridge for the System 2 Modular Media Filter (PLM150), 150 Sq. Ft.

Our Price: $237.10
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Nature 2 W26745

Nature 2 W26745

Nature2 G45 Replacement Cartridge, 45K Gal

Our Price: $115.99
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106-120 of 213 products Sort by 

How to Select

How to shop for Pool filter

Pool filter is an essential device for keeping a pool clean of objects, crystal clear, healthy and at appropriate sanitizing level. It helps not only to remove foreign matter and particles from the pool water but does not allow dangerous bacteria and germs to come in the pool water. These useful devices keep the water from going septic and, therefore, stop swimmers from getting sick. They should be used for both in ground and above ground pools to keep them from algae formation and turning green. This is why it is important to purchase a high-quality filter that will last for long and will keep the pool in optimum condition in every kind of weather and at any season.

There are a variety of pool filters that are available on the market today. They differ by size and depend on the water pool capacity and filtration area. At the same time, all pool filters come in three types: sand filters, cartridge filters and diatomaceous earth (DE) filters.

Sand filters are the most popular and the oldest type out of all the three available filter kinds. They are inexpensive, easy to use and understand. This device cleans the pool water that is pulled into the filter from particles and bacteria through the sand. Filters of this kind are considered to be the least effective type as the water that has passed through the filter and flows back into the pool contains a lot of sand. In addition, the pool filter of this kind becomes full with dirt and grime after a time and it needs a pool pump to flush it out from the water.

Cartridge filters clean the pool water by means of the special filtering material. Filters of this kind are considered to be less expensive than their DE counterparts and they are relatively low-maintenance devices. These filters contain removable cartridges that are easy to clean and replace. Filtering materials can be of different quality. Inexpensive filtering material will need to be replaced frequently while high quality and expensive cartridges will operate for many years without needing replacement.

Diatomaceous earth, or DE filters are the most expensive and the highest quality pool filters. They use crushed fossil or natural substances to clean the pool water. These substances are usually thinner than sand and these filters produce the cleanest water possible. At the same time, these filters need frequent replacement that makes this filter type more expensive in maintenance and fiddly to use.

The best modern pool filter will ensure the cleanest pure pool water, eliminate possibility of diseases caused by pool bacteria and reduce power energy consumption. However, any type of the filters needs regular maintenance and keeping it clean and free from dirt, leaves and hair.