An hvac charge compensator is used in heat pump systems to enhance efficiency by managing the refrigerant charge. The ProTech® OEM charge compensator stores excess refrigerant during the heating mode, preventing it from circulating through the system. This helps to reduce discharge pressure and improve heat output. When the system switches to cooling mode, the stored refrigerant is released back into circulation,optimizing performance. This process ensures that the system operates efficiently in both heating and cooling modes by maintaining the appropriate refrigerant levels.