*Not a "dedicated" resistive heating element (obviously the motor doubles as a resistive heating element). Also below a certain ambient temperature, heat pumps

*Not a "dedicated" resistive heating element (obviously the motor doubles as a resistive heating element). Also below a certain ambient temperature, heat pumps with heating elements run at approximate the same efficiency as the heating element itself. None of this is bad design though, if the ambient temperature is a bit higher than the minimum temperature, you would then get additional COP from the heat pump.