While solar energy is most often associated with the production of electricity, heating is also a major platform. Solar heating controllers are the mechanism for regulating the systems.

Solar Heating Controllers

The sun produces a ton of energy, but solar panel systems have historically been very inefficient at converting it. With improving technology, efficiency has improved to the point where most panel systems can easily produce enough energy to heat water for the home and pools. Obviously, controlling the heat production is a key element of this process.

Solar heating controllers come in a variety of forms. Most are designed to work on temperature differential strategies. Temperature differential controllers work by using two sensors. The first is located close the panels being used to heat the water or liquid substitute. The second is located on or close to the liquid return valve into the panel system. Put in practical terms, one sensor measures the temperature of liquid set to leave the panel while the other measures the temperature of liquid coming into the panel.

Solar heating controllers work by waiting for temperatures to rise to a temperature determined by you. Once the liquid meets the temperature, the controllers turn on the circulation pump and move the liquid to the desired location. Once the return valve sensor notes the temperature of the returning water is within a particular range of the liquid in the panel system, the pump is shut off.


Solar heating controllers are an important part of any system. Although particular designs may vary from the above description, they all serve an important function. By regulating temperature, solar heating controllers make you panel system much more efficient. Pump use and abuse is cut down and temperature increases are quicker.

Solar solutions are coming to the front of the energy debate for many residences. Countries like Germany are making huge investments in solar platforms and technologies. Solar can be a cost-effective solution for you as well. Just keep in mind that solar heating controllers are a must if you are pursuing solar water heating.