The energy consumption of a heat pump is influenced by a number of factors that you should consider before buying a heat pump:
Type of heat pump: Air/water heat pumps are generally less efficient than ground source heat pumps or brine/water heat pumps.
Heat pump output: A larger heat pump requires more electricity to generate the same amount of heat.
Annual coefficient of performance (COP): The seasonal performance factor is a measure of the efficiency of a heat pump. A higher seasonal performance factor means that the heat pump generates more heat than it consumes electricity.
Heat requirement of the building: A building with a high heat requirement needs a larger heat pump and therefore consumes more electricity.
Outdoor temperature: The outdoor temperature has a major influence on the energy consumption of a heat pump. At low outside temperatures, the heat pump has to consume more electricity to generate the same amount of heat.
Flow temperature: The flow temperature is the temperature of the water that flows through the radiators or underfloor heating. A lower flow temperature results in lower energy consumption by the heat pump.
Insulating the building: A well-insulated building requires less heat and therefore consumes less electricity.
Heat pump operating mode: A heat pump should be set so that it works as efficiently as possible. This includes ensuring that the flow temperature is not set too high and that the heat pump is not switched on and off too often.
