Solar water heaters use the sun’s energy to heat water for various purposes. There are two types of solar water heaters, those with built-in heat storage tanks and those with remote storage tanks. These devices are efficient and cost-effective, with a short payback period for commercial use. Proper installation and positioning of the collectors is important for maximum efficiency. There are two types of solar thermal heating systems, passive and active, with the latter being more efficient due to the use of circulating pumps and controls. It is important to consider the heating load and available installation space when choosing a system.

LESSON: solar water heating system