what does the pool filter do

What Does the Pool Filter Do?

If you own or have ever been responsible for maintaining a pool, you probably know that a pool filter is an essential component of a healthy pool. But what exactly does the pool filter do? This article will explore the purpose of a pool filter, the different types of pool filters available, and how to care for your filter to keep your pool clean and running smoothly.

What is the Purpose of a Pool Filter?

The main purpose of a pool filter is to remove dirt, debris, and other impurities from the water. Without a filter, these impurities can build up and create an unhealthy environment for swimmers. A properly functioning pool filter can remove particles as small as 10 microns from the water, making it safe and enjoyable for everyone to swim in.

Types of Pool Filters

There are three primary types of pool filters: sand filters, cartridge filters, and diatomaceous earth (DE) filters.

Sand Filters

Sand filters are the most common type of pool filter. They work by pumping water through a bed of sand, which traps dirt and debris before sending the clean water back into the pool. The sand needs to be replaced every 5-7 years, and the filter requires regular backwashing to remove built-up debris.

Cartridge Filters

Cartridge filters use a pleated filtration material to capture dirt and debris. They are less expensive than DE filters and require less maintenance than sand filters. The cartridge should be replaced every 3-5 years depending on usage.

DE Filters

Diatomaceous earth (DE) filters use a fine powder made from the fossilized remains of diatoms to capture impurities. They are the most efficient type of pool filter, removing particles as small as 2 microns. DE filters require the most maintenance and should be completely disassembled and cleaned at least once a year.

Maintaining Your Pool Filter

To keep your pool filter working properly, it is important to perform regular maintenance. Here are some tips for caring for your filter:

1. Check the pressure: The pressure gauge on your filter will tell you when it is time to clean or backwash the filter. If the pressure is too high, it means the filter is clogged and needs to be cleaned.

2. Clean or replace the filter: Depending on the type of filter you have, you may need to clean or replace the filter periodically. Follow the manufacturer's instructions for how often to do this.

3. Backwash the sand filter: If you have a sand filter, it will need to be backwashed periodically to remove built-up debris. Follow the manufacturer's instructions for how to do this.

4. Check the filter seals: Make sure the filter seals are in good condition and replace them if necessary. Leaks in the seals can allow unfiltered water back into the pool.

5. Hire a professional: If you are unsure about how to care for your pool filter, or if it needs to be repaired or replaced, it is best to hire a professional. They can ensure that your filter is working properly and help you avoid costly repairs down the road.

Conclusion

A pool filter plays a crucial role in keeping your pool clean and healthy. By understanding how filters work and how to care for them, you can ensure that your pool remains a safe and enjoyable place to swim for years to come.