In cooling mode, what does an air-to-air heat pump do?

In cooling mode, an air-to-air heat pump functions by extracting heat from the indoor environment and releasing it outside. This process involves the use of a refrigerant that absorbs heat from inside the home and carries it outside where it dissipates into the outdoor air. As a result, the indoor space is cooled down, making it more comfortable in warmer temperatures.

The operation relies on the principle of heat transfer, where heat moves from a warmer area to a cooler one. Thus, during cooling, the system effectively moves unwanted heat outdoors while providing a cooler indoor environment. This is a fundamental aspect of air conditioning as well, showcasing how air-to-air heat pumps can efficiently regulate indoor temperatures by reversing their operation in heating mode.