Solar heating can be used in conjunction with heat pumps and gas heaters to provide year round swimming.
The solar system will be used to heat the pool whenever free energy is available. When the sun has set or clouds obscure sunlight during the colder winter months, the secondary form of heating will take over.
A Zane solar controller has the ability to enable the system to operate as the first option and then switch over automatically to an additional form of heating.
This also is ideal for spas where temperatures between 36°C to 40°C (96°F to 104°F) are required.