Best Above-Ground Pool Filters (2026): Which to Buy and 5 Top Models

If you have outdoor space and this summer you’re planning to install a medium- or large-sized above-ground pool, you should keep in mind that it is essential to have a filter that matches its size and the way you plan to use it.

The larger a pool is, the more indispensable the filter becomes, since it will take care of cleaning the water and removing impurities, bacteria, leaves, and much more. Additionally, by keeping the water in motion, it prevents green algae from appearing or the water from turning cloudy. This will allow you to enjoy clean, crystal-clear water all summer long.

On the other hand, smaller pools require different maintenance and do not require a filter. Although there are filters designed for this type of pool (they are usually cartridge filters), in smaller models the tendency is to use chlorine treatments to keep it in good condition for several weeks; that said, dirt on the surface must be removed manually, following the process typically applied to any inflatable pool.

Before deciding on a specific filter model, let’s detail the different types that exist so you can choose the one that best fits your needs.

Our selection of above-ground pool filters at a glance

• Intex 55249 Sand Filter, for €89.95 (instead of €119.95).
• Intex C330 Cartridge Filter, for €32.66.
• Intex Sand Filter and Salt Chlorinator, for €297.81 (instead of €369).
• Monzana Sand Filter, for €164.99.
• Bestway Cartridge Filter, for €34.99 (instead of €39.95).

Types of filters

There are several types of filters for above-ground pools, each using a different maintenance system or technology depending on how much water the pool contains. Nevertheless, it’s important to consider other factors, such as the pool’s total capacity to know which option is best, and to understand the filter’s water flow to know how much water it can filter per hour. With all this, you can ensure reliable performance. Among them are the following filters to maintain a pool:

• Sand filter: one of the most popular models for medium to large pools. This model features a sand tank (usually silex or filtered glass) through which water passes and dirt is trapped. Its advantage is that you don’t need to change the sand regularly (roughly every 3 to 5 years).
• Diatomaceous earth filter (or diatomaceous earth filter): one of the most efficient options. This type uses diatomaceous earth, fossilized remains of microscopic organisms that act as a filter capable of retaining impurities and trapping particles down to 3 microns. The downside is the price, as they are quite expensive and are typically used in permanent pools. They require more frequent maintenance.
• Cartridge filter: one of the most popular options due to its affordable price and effectiveness (suitable for small or medium pools). It operates with a paper filter that must be replaced every few weeks. It can retain particles of around 5 microns.
• Salt chlorinator: unlike the previous models, a salt chlorinator is a water treatment and disinfection system that connects to a filter. Through electrolysis, it uses salt instead of chlorine to destroy bacteria and algae.

Best filters for above-ground pools

Intex 55249 Sand Filter

Designed for above-ground pools up to 17,000 liters, it delivers a flow of about 3,500 liters per hour and offers four functions: recirculation, backwash, filtration, and drain. It also includes automatic scheduling and a locking system. Its price is €89.95 (instead of €119.95).

Intex C330 Cartridge Filter

This cartridge filter operates with an easy-to-change and easy-to-clean H-type filter, is compatible with above-ground pools up to 7,900 liters, and offers a flow rate of 1,250 liters per hour. It also incorporates Hydro Aeration technology that improves water oxygenation. Its price is €32.66.

Intex Sand Filter and Salt Chlorinator ECO 7 g/h

This combination of a sand filter with a salt chlorinator is designed for medium pools up to 32,000 liters. It can convert salt into 7 grams of chlorine to sanitize the water and supports 35 kg of silica sand, 25 kg of glass sand, or 1 kg of filter beads. Its price is €297.81 (instead of €369).

Monzana Sand Filter

This filter comes with a sand filter plus filter balls. It is designed for pools up to 35,000 liters, delivers up to 10,200 liters per hour and has a power rating of 400 W. It also features IPX5 protection and includes a 1.9-meter power cord. Its price is €164.99.

Bestway Cartridge Filter

Works with cartridge filters of type II that must be replaced every 2 to 3 weeks (filters included), offers a flow rate of 2,006 liters per hour and is suitable for above-ground pools up to 14,300 liters. It is currently available at €34.99 (instead of €39.95).

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