Does the direction of refrigerant flow through a compressor in a heat pump system change when switching between modes?

In a heat pump system, the compressor is designed to maintain a consistent direction of refrigerant flow, regardless of whether the system is operating in heating or cooling mode. The key component that allows heat pumps to reverse the flow of refrigerant when switching modes is the reversing valve, not the compressor itself.

When the heat pump is in cooling mode, the refrigerant absorbs heat from the indoor air and releases it outside. In heating mode, the reversing valve changes the flow direction, allowing the refrigerant to absorb heat from the outdoor air and release it indoors. In both modes, however, the compressor keeps running in the same direction; it does not change its flow direction.

This functionality underlines the importance of understanding how heat pumps operate, emphasizing that while mode switching affects the refrigerant flow path, the compressor maintains a consistent operation direction throughout the process. Therefore, the statement regarding the direction of refrigerant flow through the compressor changing with modes is false.