A heat pump is a heating system that works like a reverse air conditioner, using the ambient heat in the environment to produce hot water. A solar hot water heater uses the direct and indirect solar radiation of the sun to heat water. This type of water heater comes in different configurations, such as ground-mounted and roof-mounted. Heaters like this are also called solar thermal systems. Both hot heating systems can be used to heat pool water.
Although the heat pump and solar water heating system are both efficient and cost-…