a heat pump or air conditioner? Here’s what you need to know about the two. Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more ...

Think of a heat pump as an air conditioner in reverse. If you turned your window air conditioner around, the warm air that usually dissipates outdoors would blow into your house — and you’d ...

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 ...