Colmac heat pump water heaters provide energy-efficient heating for commercial and industrial sanitary hot water needs, reaching temperatures as high as 185°F (85°C) in a single pass. Operating similarly to air-conditioners or refrigerators, these heat pumps extract heat from the surrounding air and transfer it to water through a refrigeration cycle, resulting in usable hot water. This heat pump technology, which moves heat instead of generating it from fossil fuels or electric resistance, is the optimal choice for energy conservation. Depending on the source air or water temperature, using heat pumps for water heating can consume only one third to one fourth of the energy required by electric resistance or gas methods.