The Solar-wash is a ballast unit (box) that is connected to the cold and hot water and the washing machine. By connecting the Solar-wash to a HR-boiler, solar water heater, district heating or heat pump (water heater) the washing machine fills itself with pre-heated water. The water doesn't have to be warmed electrically anymore. One press on the button toggles in the Solar-wash. The Solar-wash automatically switches off, and rinsing is done with cold water. Normally the water of the washing machine is preheated electrically. In the generation of electricity in a power plant approximately half of the energy is lost. When the water is heated with gas or solar energy, energy is being saved. The Solar-wash is easy to install yourself. Of course, you can also ask for one of our expert installers.