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Pool Filters

About Pool Spa Filters

Westside Wholesale offers you a great selection to choose from for your pool and spa filters. With great name brands, filtration for your pool and spa is made easy and affordable. We feature filter products that include cartridge types, sand types, and D.E. types, ranging in coverage from 1 square feet to over 400 square feet filters. We also offer filter cartridge replacements for your cartridge pool or spa filters.

Be sure to look for filter cartridge, D.E. filter system, multi-port valve, extended cycle, top-mount, sand filter system, cartridge filter system, large capacity, above ground, full-flow, side mount, backwash valve, spa filter, pool filter.

At Westside Wholesale, you’ll be sure to find all your pool and spa filter products from our large selection at a great price.

151-165 of 195 products Sort by 

Unicel UHD-SR50

Unicel UHD-SR50

Unicel Series 8000 Filter Cartridge for Pools, 50 Sq. Ft.

Regular Price: $44.51
On Sale: $37.09
as low as: $33.38

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Add 11 : $35.24 ea. (5% off)
18 : $34.49 ea. (7% off)
24+ : $33.38 ea. (10% off)
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Pentair 27002-0125S

Pentair 27002-0125S

Pentair Sta-Rite Pool Cartridge for the System 2 Modular Media Filter (PLM125), 125 Sq. Ft.

Our Price: $161.99
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Hayward SPX1048D

Hayward SPX1048D

Hayward Main Pool Drain Gasket

Regular Price: $5.99
On Sale: $3.60
as low as: $3.24

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Add 112 : $3.42 ea. (5% off)
176 : $3.35 ea. (7% off)
239+ : $3.24 ea. (10% off)
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Hayward ECX1322A

Hayward ECX1322A

Hayward Filter Directional Vent Valve with O-Ring

Regular Price: $8.99
On Sale: $6.10
as low as: $5.49

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Add 66 : $5.80 ea. (5% off)
104 : $5.67 ea. (7% off)
141+ : $5.49 ea. (10% off)
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Hayward SPX0710MA

Hayward SPX0710MA

Hayward Threaded Sight Glass with Gasket for Pool Filters

Regular Price: $5.99
On Sale: $4.20
as low as: $3.78

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Add 96 : $3.99 ea. (5% off)
151 : $3.91 ea. (7% off)
205+ : $3.78 ea. (10% off)
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Hayward EC10SC50

Hayward EC10SC50

Hayward Pre-Measure D.E. Scooper

Regular Price: $7.99
On Sale: $5.40
as low as: $4.86

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Add 75 : $5.13 ea. (5% off)
118 : $5.02 ea. (7% off)
160+ : $4.86 ea. (10% off)
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Unicel C-4607

Unicel C-4607

Unicel Series 4000 Filter Cartridge for Spas/Pools, 5 Sq. Ft., 4-1/4" OD

Our Price: $5.99
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Nature 2 W26765

Nature 2 W26765

Nature2 Above Ground A Vessel Replacement Cartridge, 5-30K Gal

Our Price: $94.99
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Unicel C-7467

Unicel C-7467

Unicel Series 7000 Filter Cartridge for Pools, 67.5 Sq. Ft.

Our Price: $53.99
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Hayward SPX1105Z4

Hayward SPX1105Z4

Hayward 90 Degree Elbow Barbed Hose Adapter for Pool Filter, 1.5"

Our Price: $4.64
Qualifies for Pallet Pricing!

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Order $2000 in Pallet Items and
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Hayward SPX1091Z4

Hayward SPX1091Z4

Hayward Sand Filter Straight Hose Adaptor, 1.5"

Regular Price: $3.99
On Sale: $2.50
as low as: $2.25

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Add 160 : $2.38 ea. (5% off)
253 : $2.33 ea. (7% off)
344+ : $2.25 ea. (10% off)
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Hayward SX200Z4

Hayward SX200Z4

Hayward Pool Filter Tank Bulkhead O-Ring

Our Price: $2.75
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Pentair 27002-0175S

Pentair 27002-0175S

Pentair Sta-Rite Pool Cartridge for the System 2 Modular Media Filter (PLM175), 175 Sq. Ft.

Our Price: $231.99
+ FREE Shipping
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Hayward SPX1091Z7

Hayward SPX1091Z7

Hayward Sand Filter Combo Hose Adapter, Male Smooth, 1.5" /1.25"

Regular Price: $1.99
On Sale: $0.95
as low as: $0.86

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Add 422 : $0.90 ea. (5% off)
666 : $0.88 ea. (7% off)
906+ : $0.86 ea. (10% off)
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Unicel C-4405

Unicel C-4405

Unicel Series 4000 Filter Cartridge for Spas (2/Set), 50 Sq. Ft., 6-5/8"L

Our Price: $31.99
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151-165 of 195 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.