Heat pumps operate by moving heat from lower temperature areas to higher temperature areas. They typically take advantage of an electrically driven compressor and a closed vapor compression cycle.

GeoT*SOL is a professional and user-friendly tool for planning and designing heat pump systems. The program offers you the choice between different heat sources, operating modes and numerous system ...

Karen is an energy efficiency and sustainability specialist with 20+ years experience. At Which?, Karen cuts through the jargon to uncover the environmental issues that matter most to consumers and ...