In a nutshell, solar water heating collectors capture and retain heat from the sun then transfer this heat to liquid water, which can then be used for showering, space heating, industrial processes or even solar cooling. A solar water heater is one of the most effective ways of cutting a household’s carbon footprint by reducing reliance on fossil fuel usage. By offsetting the use of electricity, gas, or oil, solar water heaters can also provide financial savings by reducing energy costs. The most common type of collector that we install is a flat plate collector. It has a large, flat surface area (absorber) to maximize exposure to the sun, and has small tubes bonded to it. Fluid runs through the tubes, collecting the heat from the absorber.