The DIU has awarded contracts to prototype air conditioning and water heating technologies in order to reduce energy ...

The Fraunhofer ISE has designed a novel method for assessing the potential of low-temperature heat sources for large-scale heat pumps. The five-step process was tested on the German city of Fellbach, ...

A water heater accounts for 20% of a home's energy use, but a heat pump water heater is two to three times more efficient.