The time needed to heat a pool depends on how big the heat pump that you have is, the volume of the pool and the heat loss from the surface of the water in the location you are in.
Depending on the month of the year it is, the first time you switch on the heat pump you can expect a temperature rise of between 0.1 and 0.3 degrees per hour. This also depends on the heat pump installed as well. For a quick guide to calculate how many hours it will take to heat the pool is a calculation
- (pool volume x 4.18 x temperature rise)/ 1800
- Then divide the answer by the kW of the heater chosen and that is the approx. number of hours.
(Note this is just to heat up the water and doesn’t take into consideration the heat loss during heat up and other environmental factors)
A heat pump is designed to maintain a pool temperature by running everyday. This ensure the water is always ready to swim in.
(Note that a pool heat pump sized for Extended season only will not be able to achieve the set temperature in the winter months)