Heating and cooling of homes accounts for nearly 40% of the total energy use in many houses.
Electric oil, panel and fan heaters convert electricity in to heat at 1:1 ratio, 1 unit of electricity for 1 unit of heat. They are the least efficient form.
Air conditioners convert electricity into heat at around a 1:3 ratio meaning they use 1/3 of the energy to produce the same amount of heat as a oil, panel or fan heater.
There are far more energy efficient forms of keeping your home warm (or cool) though, consider:
- Solar air heaters
- Wetbacks and Radiators
- Ceiling fans
- Roof cavity ventilation
- Ground source heat pumps
- Phase Change Materials
- Draft sealing
- Solar passive design