I had become aware that air-source heat pumps are not free energy. This came out when fossil fuel prices rocketed last year. In the end, air-source heat pump people also paid high bills because of the electrical energy that they use. I finally managed to get a look at some data. It looks like one heating unit is worth 12kW but uses about 3kW of electrical power. Now 3kW is my full convection heater and we would consider that expensive as the only heating option. But that would heat only one room whereas I suppose this heats a whole house.
