The pool experts / Essential guide for heating your pool | THE COOL POOL by Fluidra

As temperatures fall and autumn approaches, questions often arise about how to heat a pool efficiently. What is the best choice between an electric heater and a heat pump? How can heat be kept in with a pool cover? We will help you to familiarise yourself with the basic systems so that you can start to prepare your pool for the cold days ahead. Can you imagine swimming in warm water, when night has just fallen or when it is snowing outside?

Heat pumps

Heat pumps with inverter technology can be highlighted for their capacity to heat pool water noiselessly, as well as using less energy. The latest models, such as the Pro Elyo Inverboost NN heat pumps by AstralPool, are highly recommended for heating residential pools, whilst being energy-efficient.

Their A power rating makes them the most efficient ones in the market because they can save up to 33% in comparison with standard class C pumps. This is possible because inverter technology automatically changes the power input in response to outdoor weather conditions and ensures that pumps work to optimum capacity at all times. Along these lines, the Soft Start system prevents current surges when the compressor starts up.

AstralPool’s Pro Elyo Inverboost NN heat pumps can be connected to the Fluidra Connect platform via the Modbus communications protocol and have been specially designed to perform better in the most adverse weather conditions.

Solar panels

Solar panels make the most of natural sources of energy. They are without a doubt the most sustainable and environmentally friendly option for heating water. However, local climate conditions will largely dictate whether this is the best system for you. Solar collectors can be placed anywhere, but preferably near your pool, either on the roof or in an area without shade and that receives a great deal of sunlight.

Electric heaters

Electric heaters work using the Joule effect, and they are discreet and efficient in smaller pools, thus saving space and simplifying the water heating system. They are easy to install as they just have to be placed on a pool’s filtration circuit and they manage to heat the water over a period of 2 to 5 days. Maintenance costs are a little higher than the other options discussed and it is recommended that they be used at off-peak times, according to your electricity supplier’s rates.

Pool covers

Apart from being a safety feature, pool covers protect pools and conserve the water’s temperature by preventing the heat that builds up from being lost at night time. Manual or motorised covers with rollers favour water savings and they reduce heat loss from the pool water. In addition, they ensure that chemical products used for water treatment do not evaporate before they have time to take effect. Did you know that these systems can help reduce energy consumption by up to 50%? 


Dehumidifiers eliminate humid, cold air, thus keeping the air warm and dry. Moreover, they enhance pump performance as they keep energy consumption down and run on the most silent technology available.

Heat exchangers

This is a suitable method if your pool is not very far from your house. Heat exchangers can be placed on your home’s boiler, provided it has been designed to work in combination with this system. Thus, the pool water is heated by the boiler through two separate circuits. If you have an efficient boiler, you should be able to increase the temperature of your pool in 2 days.

If you have any questions about the best way of heating your pool, do not hesitate to contact us!