An Aqua Cal heat pump is one of the most popular devices for keeping pool water warm during the winter. Also known as a heat pump, it warms up your pool by sucking some water into a heating tank and then pumping the warm water back into your pool. The constant exchange of warm and cold water keeps your pool fit for swimming even during the winter.

This type of pool heating system is more reliable and efficient compared to other types of pool heating systems. Although electric heaters are a bit more expensive than the traditional gas powered heaters, it consumes less energy than the gas powered type so you end up spending less money on your heating bills