You are likely open to a few professional tips that can lower energy use from your air conditioner or heat pump. In Port St. A variable-speed fan coil helps keep temperatures even across your home, raises SEER2 efficiency, and is especially useful for handling humidity in Port St. Lucie. Lucie’s hot summer months. Lucie. Lucie homes. Better temperature and humidity control keeps the indoor air steadier, even when summer heat pushes temperatures up.