What we need is to make pleasure last as long as possible... If you want to heat your pool so that you can use it throughout the season, from April to October, you have several options. They vary particularly in terms of performance: it is the ratio between the amount of energy supplied and the amount produced as part of the heating process. When heat is generated, as in the case of an electric heater, the maximum output is of necessity less than 1 which is why heat pumps are interesting because, instead of generating heat, they retrieve it from the air
Heaters : gas or fuel oil, they will quickly heat up your pool water. However, the initial outlay is considerable as is the consumption of fossil fuel. Their efficiency ranges from 0.75 for conventional boilers to 0.9 for condensation boilers.
Electric heaters : these are electric elements that heat the water. They have the advantage of being compact, easy to install and fairly inexpensive to purchase. However, they consume a great deal of electricity. They should preferably be used on an occasional basis. They are extremely efficient with an output close to 1.
Heat exchangers : they allow the main boiler in the house to be used to heat the pool. Obviously, this assumes that the pool’s pump room is close to the house boiler. Efficiency and running costs depend directly on the performance of the main boiler.
Solar panels : for this type of heating to be of interest, although this may seem obvious, it is better to be in a region that receives plenty of sunlight as this is an essential condition for amortising a fairly high initial investment. Performance depends exclusively on sunlight intensity.
Heat pumps : they transfer calories from the air into the pool in order to increase the water temperature. This allows them to be 4 to 5 times more efficient than other methods of heating. However, they have to blow a lot of air which can cause noise nuisance. Therefore, their location must be chosen with care.
At the end of the day, even if the temperature increases gradually, the heat pump is currently the most cost-effective and ecologically friendly principle for efficient swimming pool heating.
N.B. Regardless of the heating system chosen, don’t forget that covering the pool over, especially at night, is essential in order to restrict heat losses and avoid evaporation.