COP

COP

The Coefficient Of Performance (COP) is used to measure certain heat pumps’ efficiencies while in heating mode. You’ll commonly see this measure applied to geothermal products. Unless you’re looking for painful reminders of high school math classes or are a budding engineer, this one is pretty tough to calculate. In a nutshell it’s the energy produced by the heat pump (in watts) divided by the energy consumed by the heat pump (in watts)―easy. Like other efficiency ratings, higher is better.