Help is at hand though courtesy of [petey53], who made his own ground source heat pump for his Toronto house using a pair of window-mounted air conditioning units. A custom copper “trombone ...

UK-based heat pump provider Grant Engineering has unveiled a propane (R290) air source heat pump for applications in residential buildings. The new product is available in five versions with a ...

Heat pumps are more efficient than gas boilers and can use electricity generated from increasingly clean sources, as wind and solar power replace polluting fossil fuels. Air-source pumps - the ...