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Electric Heating Electricity Cost Calculator

Electric heaters, whether they are fan heaters, halogen 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.

Compare heater prices

Select tariff: Or:
Power Rating Per Hour Per Day* Per Week
500W 7.60p
500W
£0.46
3kWh
£3.19
21kWh
800W 12.16p
800W
£0.73
4.8kWh
£5.11
33.6kWh
1000W (1kW) 15.20p
1000W
£0.91
6kWh
£6.38
42kWh
1200W (1.2kW) 18.24p
1200W
£1.09
7.2kWh
£7.66
50.4kWh
1500W (1.5kW) 22.80p
1500W
£1.37
9kWh
£9.58
63kWh
2000W (2kW) 30.40p
2000W
£1.82
12kWh
£12.77
84kWh
2500W (2.5kW) 38.00p
2500W
£2.28
15kWh
£15.96
105kWh
3000W (3kW) 45.60p
3000W
£2.74
18kWh
£19.15
126kWh

*based on 6 hrs a day at maximum output using the Average rate of 15.2p/kWh (September 2014 tariff) for a unit of electricity. Heaters with a thermostat will automatically turn off when required room temperature is reached.

Can you get energy saving portable electric heaters?

Unfortunately not, all portable electric heaters will consume the same amount of electricity and produce the same amount of thermal heat, relative to power input. The only difference will be in how they deliver the heat, e.g. fan heaters are a good choice for quick heating of specific areas of a room, as you can direct the heat.

What will affect the running cost of the heater?

The power/energy rating (watts or kWh) will dictate the running cost per hour of any heater. The most effective way to reduce running costs is to keep the heat in, insulating and reducing draughts will help keep bills down. Low cost solutions, such as heavy curtains, blinds, draught excluders will all help. Loft and cavity wall insulation, double-glazing can dramatically reduce heating bills too.

Central Heating Boilers

If you are about to replace your central heating or are building a new home please visit the Boiler Efficiency Database which allows you to view the SAP seasonal efficiency of thousands of Gas, LPG and Oil Boilers.

Heater Prices

Heater type:
Fan Heaters
Halogen Heaters
Convector Heaters

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Air Conditioning Units are listed under Heating & Cooling - click here to view their power consumption.

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