A properly-sized York heat pump can provide year round energy savings. According to their website, York.com, nearly half of York’s heat pumps have ENERGY STAR certification, meaning they are at least 15 to 25 percent more efficient than standard products.
Because they provide both heating and cooling, heat pumps have two energy rating systems. The Seasonal Energy Efficiency Ratio rating measures air conditioner efficiency. The Heating Seasonal Performance Factor measures heating efficiency. According to the review site, hometips.com, the efficiency of a heat pump depends on climate, fuel type and the use of other energy efficient products in the home, including insulation.