Hot Tub Filters

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Make sure your replacement filter is of high quality to allow for easy cleaning. Cartridge filters also come in many different end cap styles.

You can have open top and bottoms or have them closed. Sometimes a handle is on the filter or there may be a fitting that allows for the filter to be mounted.

In all cases, measure the filter and observe if it has any other portrusions before ordering.

This video gives instructions on how to measure a spa filter.

When measuring, do not include any of the protrusions including handles or strings in the measurement but identify them when ordering. Make sure you order the correct cap configuraton.

The Square Footage of a filter refers to the amount of filter media. You can replace for example, a 25 sq.ft. filter with a 50 sq.ft. filter as long as the filter dimensions and end cap configuration is the same. This would provide twice as much filter media.

Searching for filter by filter number or filter size are the best options as manufacturers change filter configurations often, so it is many times not enough to know your spa model number.

From Jacuzzi filters to Hot Springs Spas,Royal Spas, Sun Spas, Arctic, Beachcomber,
Serenity Spas,Tiger River
Cal Spas, X-SPa
Sundance Spas, Vita Spas
Warm Springs Spas,
Master Spas and QCA Spas, you can find filters online.

Hot Tub Filters Canada

Spa Rubber DuckHot Tub Filters

There are hundreds of different spa filters on the market so measuring your old spa filter will help you identify the correct replacement filter.

Most hot tub filters are the cartridge filter type, but there are also Diatomaceous Earth filters (D.E.) and sand filters used in some spas.

The cartridge filter is made up of the end cap and casing as well as the actual filter element. The element has a square footage rating related to how much filter media is used in the folded material.

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A spa cartridge filter should be maintained so it lasts longer. This includes regular rinsing out with a garden hose. This allows for proper capturing of undesired dirt, hair, oils, particles and other hot tub debris.

The filter can also be soaked overnight in a cartridge filter cleaner especially made for opening up cartridge filter pores.

Spray on filter cleaners are also available. You can have a second filter that is used to rotate the first one out when it is being soaked overnight in filter cleaner.

Do not use any soap based cleaners or you will introduce a high volume of foam and oil into the water. Replace every year or so.

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How to Measure for a Replacement Hot Tub Filter - Get your replacement filters online


How to measure a hot tub filter Hot Tub filter replacement requires measuring your existing filter that came with the spa to determine what size filter you need.

The diameter of the filter (A) along with the length (B) and the core diamter (C) are the measurements needed to be sure you get the same type.

Some filters actually have a model number or id number etched in the plastic end cap. Reading this number may help you identify the correct filter.



Finding a replacement hot tub filter is easiest if you know the filter reference number. It can be a Pleatco number, or Filbur or Unicel reference number as stamped on one of the end-caps of the filter. If the number can not be found, then taking a filter measurement will assure the correct replacement filter.

It may be a good idea to take the length, diameter and center hole measurements to be sure you will receive the correct filter.