What is a Self-Cleaning Hot Tub? How it works.

If you have ever wondered what a self-cleaning hot tub or swim spa is, you are not the first!
For anyone that has previously owned a hot tub or swim spa, the idea that a spa can completely take care of itself sounds too good to be true.
So, can hot tubs actually clean themselves? Keep reading below to find out what you need to know about self-cleaning hot tubs.

What is Self-Cleaning? 

Essentially, when a hot tub or swim spa is being labelled as self-cleaning, it indicates that less maintenance is involved, and owners will save both time and money. 

Unfortunately, it does not mean that the hot tub takes care of itself entirely. 

But, our patented technology makes Hydropool the World’s Only manufacturers of Self-Cleaning Hot Tubs and Swim Spas, and it’s all thanks to our filtration systems. 

Purpose of filtration

Hot tub water filtration is designed to keep the water in the spa clean. All hot tubs have water filtration and all hot tubs require maintenance. But, the level or amount of maintenance is incredibly low on our self-cleaning hot tubs compared to others because of our additional ‘self-cleaning’ features.

A HydroClean filtration jet and pump push floating debris to the high flow skimmer and pre-filter where it is removed, and any debris that is heavy enough drops to the bottom and is removed by the HydroClean Floor Vacuum.

100% of the water travels through the dual-core micro filter every 15 minutes, cleaning the water to a 5-micron level. The chemical feeder treats the water before leaving the filter area so that clean, safe water can re-enter through the filtration jets.

Hydropool filtration

In simple terms, a self-cleaning hot tub has incredibly efficient filtration and an automatic dosing system. For the filtration factor, 24-hour pumps along with a pressurised filtration system are often used to improve efficiency.

The automatic dosing or inline system will continually add chlorine and bromine to the water, which is helpful and saves on a maintenance task. But an inline system doesn’t have the ability to test the sanitation (pH levels) of the water. This would have to be tested manually as it is essential to ensuring that your water is safe and doesn’t irritate your skin.

What to look out for in a self-cleaning hot tub? 

As mentioned above, Hydropool are the World’s only manufacturers of self-cleaning hot tubs and swim spas so your hot tub and swim spa must be manufactured by Hydropool. Look out for the Hydropool logo on your product. The Hydropool logo will be featured all over the hot tub or swim spa so should be easy to spot, but look out for the logo near the display panel to find it quickly. 

Hydropool hot tubs are also equipped with a built-in floor vacuum, pictured above, that automatically cleans the bottom of the tub while the surface debris is also being removed. This is how the Hydropool self-cleaning system filters 100% of the water every 15 minutes! 


In conclusion, here are the 3 main reasons why our patented self-cleaning hot tubs are the best on the market!

1. Filters 100% of the water every 15 minutes, making it the cleanest and therefore safest hot tub on the market!

2. You only have to drain your hot tub up to every 6 months, as opposed to every 4-6 weeks in other hot tub brands. 

3. Save both time and money when it comes to spa maintenance. 

What to do next!

Now that you know why self-cleaning hot tubs and swim spas are the best on the market, download a free buyer’s guide to learn about the other unique features our hot tubs offer, or check out our vouchers for discounts! Do not hesitate to contact our team for more information or prices.

Happy shopping! 

Watch a visualisation of our self-cleaning filtration system with this 30-second clip on our Youtube channel!

Hydropool UK

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These rotationally moulded spas are the simple, affordable, durable way to enjoy a tranquil spa getaway steps from your home.

Hydropool Dorset


Hydropool Dorset
Canford Magna Garden Centre
170 Magna Road
BH21 3AP


01202 911 800



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Credit is subject to status and affordability. Terms and conditions apply. Hydropool Dorset Limited & Hydropool Dorset 170 Magna Road Wimborne BH21 3AP UNITED KINGDOM & Register no. 844235 as shown on FCA authorisation trading as Hydropool Dorset Limited is a credit broker and is authorised and regulated by the Financial Conduct Authority. Credit provided by Hitachi Personal Finance, a trading style of Hitachi Capital (UK) PLC, authorised and regulated by the Financial Conduct Authority (Register no. 704348).

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