@ Home - Heating Energy Calculator
Electric heaters, whether they are fan heaters, oil-filled radiators or convector heaters are rated in Watts (W) or Kilowatts (kW). Find out what your heater is rated at, then use our energy calculator to see how much it will cost to run per hour, day or week.
| Power Rating | Cost/Hour | Cost/Day* | Cost/Week |
| 500W | 6.13p | £0.49 | £3.43 |
| 750W | 9.20p | £0.74 | £5.15 |
| 1kW | 12.26p | £0.98 | £6.87 |
| 1.5kW | 18.39p | £1.47 | £10.30 |
| 2kW | 24.52p | £1.96 | £13.73 |
| 2.5kW | 30.65p | £2.45 | £17.16 |
| 3kW | 36.78p | £2.94 | £20.60 |
If you are about to replace your central heating or are building a new house please visit: DEFRA (Department for Environment Food and Rural Affairs) as they maintain a Boiler Efficiency Database which allows you to view the SAP seasonal efficiency of thousands of Gas, LPG and Oil Boilers.
Air Conditioning Units are listed in our work section - click here to view their power consumption.
