Due to the fact that heat pumps do only move heat but not generate heat, heat pumps are on average 2 to 3 times more energy efficient than regular other electric heating methods like a bar or fan heater. The high efficiency is achieved when the temperature at the heat pump outdoor unit is 14 degrees or above and when the temperature difference that needs to be achieved for heating your home is small. So best use the heat pump during the day, when the temperature is higher, ideally above 14 degrees Celsius. Air conditioning in offices and underfloor heating, where the heat is stored in the concrete slab or screed are the most efficient uses of heat pumps. The next most efficient use of a heat pump is via a central radiator heating system. 

We would advise though that before you buy, you ask for a performance graph. While many advertise that their products are three or even four times more efficient than standard heaters, this is only true for certain conditions. The colder it is outside, the less efficient heat pumps are. Also, the higher the temperature difference is you are trying to achieve, the less efficient a heat pump works. Again, avoid a bad awakening by checking the performance in lower temperatures with your potential supplier. Other things to consider is where will the outdoor unit be mounted: should be at a spot with plenty of air flow and a spot with a warm temperature. Ensure your heat pump is maintained. So, what are the pros and cons of using a heat pump to heat your home?