Hot tub filters

Hot tub filters are vital to keeping your hot tub in tip top condition. They help remove debris, grease, hair and other unwanted elements to keep your hot tub water crystal clear and cleaner.

There are different types of hot tub filters that all serve different purposes. Read on to find out more or shop our hot tub filters here.

How does a hot tub filter work?

Hot tub filters trap and remove unwanted elements and debris as the water filters through them to help keep your hot tub more hygienic and the water clearer.

The majority of hot tub filters have an easy insert and remove cartridge design with folds that offer greater surface area for cleaning and filtering water. Anything trapped or contained by the filter will stay there until they’re rinsed and cleaned by the hot tub owner, so regular maintenance of the filter is imperative to its working condition.

What are the different types of hot tub filter and what do they do?

Cartridge filters

The most popular filter out there, cartridge filters are really easy to use and simply slide in and out of the hot tub filter housing. They are usually made from paper, fabric or plastic.

Ceramic filters

Ceramic filters are longer lasting than their plastic, paper of fabric cartridge alternatives, providing years of use with regular maintenance.

Sand filters

Sand filters, unlike cartridge filters, sit outside the hot tub. They’re usually spherical in shape and consist of a container filled with sand that filters undesirable elements.

Eco-friendly filters

Ideal for the environmentally conscious out there, eco-friendly diatomaceous earth filters use diatoms instead of carbon, while still providing high-quality and dependable filtering.

Signs you should change your hot tub filter

While generally speaking, you should replace your filter every 1-2 years (longer for ceramic filters) there are things to look out for that indicate you need to change your filter earlier.

For example, cartridge damage; such as bents, ripped or brittle caps, will need replacing as soon as possible. This is because a damaged cartridge can lead to undesirable elements infiltrating the hot tub’s water, which is potentially harmful to anyone using the hot tub.

How often do you need to change hot tub filters?

This can depend on the type of filter you use, but cartridge filters tend to need replacing every 1-2 years. Ceramic filters will last longer with regular maintenance, providing years of use.

Do you need filter cleaners?

Filters need to be cleaned regularly. We recommend rinsing it regularly, such as once a week, then cleaning it with a chemical filter cleaner once a month for a more comprehensive clean and finish.

How to clean a hot tub filter

By following a few simple rules, you can get the most out of your hot tub filter. We recommend you follow this hot tub filter maintenance programme to keep them, and your hot tub, in top condition.

Weekly rinse

It’s good practice to give your hot tub filter a rinse each week. This can be done with a hose or in your sink to remove any lingering debris. Just use fresh water to rinse your filter and avoid using detergents or soap as this can lead to foaming and can compromise water clarity.

Monthly chemical rinse

For a deeper, more comprehensive clean, we recommend giving your hot tub filter a monthly rinse with a hot tub filter chemical. Simply rinse the filter with the chemical filter cleaner and leave to sit for 15 minutes before replacing in the filter housing.

Quarterly chemical soak

Finally, we recommend soaking your filter in a hot tub filter chemical cleaner overnight every 3-4 months for an ultra-deep clean before rinsing and allowing it to dry. It’s advised you do this in sync with changing the hot tub water.

Hot tub filter FAQs

Can you clean hot tub filters in a washing machine?

No. Cleaning a hot tub filter in a washing machine can damage the filter, which will diminish its performance, and can also allow soap and detergent to stick to the filter, which will compromise the clarity of the water and increase water foam.

Can you clean hot tub filters in a dishwasher?

We don’t recommend cleaning your hot tub filter in a dishwasher. As with cleaning a filter in a washing machine, it can lead to filter damage and containments sticking to the filter, which will compromise the clarity of the hot tub water

Should you clean a hot tub filter with a detergent or soap?

We recommend only using fresh water or chemical filter cleaner to clean your hot tub filter. This is because soap and detergents will stick to the filter, which is then released into the hot tub water, causing excess foam and reducing the clarity of the water itself.