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 ...
South Korean scientists built an air source heat pump integrated with a photovoltaic thermal unit that can reportedly achieve an average heating and cooling coefficient of performance (COP ...
Most of the time, when we talk about heat pumps, we're talking about either air-source heat pumps -- basically reversible air conditioners -- or ground-source heat pumps, which pump a refrigerant ...
Heat pumps warm buildings by absorbing heat from the air, ground, or water. Air-source pumps, for example, suck in outdoor air and pass it over tubes containing refrigerant fluids to produce heat.