If your HVAC system has a heat pump, you already know that this term can seem like a misnomer: after all, in Jacksonville’s mild climate, the heat pump provides far more cool air than warm. This ability to produce air at a wide range of temperatures can be attributed to the reversing valve, a metal cylinder with a slide that moves back and forth to switch between the heating and cooling modes. Read on to learn more about the heat pump’s reversing valve and some signs that your valve may be in need of repair or replacement.