What does the term “air leakage” refer to in relation to heat pump efficiency?

The term “air leakage” refers specifically to the uncontrolled movement of warm or cool air escaping from a building, which can significantly impact the efficiency of heat pumps. When air leaks out, it causes a loss of conditioned air, which means that the heat pump has to work harder to maintain the desired indoor temperature. This additional strain can lead to increased energy consumption and higher utility bills due to the heat pump's reduced ability to effectively perform its heating or cooling functions.

Addressing air leakage through proper insulation and sealing can enhance the overall performance of a heat pump, making it more efficient and effective at maintaining comfortable indoor climates.