Most heat pumps are split systems. They’re called this because the system is split into two components. The heat pump unit which sits outside, and the air handler unit which sits inside.

In the summer the unit works very similar to an AC. The unit outside compresses and circulates the refrigerant to the evaporator coil which is inside your air handler. The evaporator coil gets very cold- ice cold, actually. So cold that it can remove humidity from your home.

Hot humid air flows in, cool and comfortable air flows out. This continues until the indoor air matches the ideal temperature set on your thermostat or control system. In the winter this process is reversed using a simple valve that allows the heat pump to create warmth in your home even on the coldest days!