Heat Pump COP Explained

COP (Coefficient of Performance) measures the efficiency of a heat pump. It is the ratio of heat output to electricity input. For example, a COP of 4 means the pump produces 4 units of heat for every 1 unit of electricity. A higher COP means better efficiency.

Factors Influencing COP in Air/Water Heat Pumps

• Outside Temperature: Higher outdoor temps lead to higher COP, since heat is easier to extract.
• Input Temperature (Return Water): Lower return temps improve COP, as it's easier to add heat to cooler water.
• Output Temperature (Flow Water): Higher output temps reduce COP, because more energy is needed to heat the water.
• Fan Speed: Needs to be balanced. Too low means poor heat absorption, too high wastes electricity.
• Water Flow: Optimal flow improves heat exchange. Too low = poor transfer; too high = wasted pump energy.