When do i use heat pump to inground pool?

Heat pumps can help to significantly extend your swimming season by raising the water temperature of your inground pool to comfortable levels. As air-source heat pumps use ambient air to transfer heat to the water, they are most efficient when the outside air temperature is higher. Therefore, the ideal time to use a heat pump to heat your inground pool is during warmer months when the outside temperatures are suitable, allowing the heat pump to operate efficiently.