Say goodbye to electricians. Gradient's 120-volt All-Weather Heat Pump heats and cools up to 500 square feet and plugs right into a standard outlet.

There is an issue with the thermostat ... it can cause problems with the heat pump. Additionally, both the indoor and outdoor units have individual power switches, so you need to ensure that ...

According to the Department of Energy, the less difference between indoor and outdoor temperatures ... depending upon heat pump efficiency). According to the DOE, setting your thermostat back ...