Fan Heater Running Cost Calculator
Instantly estimate how much your electric fan heater costs to run based on wattage, daily usage, and your specific energy tariff.
Calculate Your Heater Running Cost
Enter your fan heater’s wattage, daily usage hours, and electricity rate below to get an instant, precise breakdown of your hourly, daily, monthly, and yearly running costs.
Heater Details
Enter your heater specifications and usage habits
Common sizes: 1000W, 2000W, 3000W
UK average is currently ~24p/kWh
Cost Breakdown
Based on your inputted usage and tariff
Common Fan Heater Running Costs
Estimated costs based on a standard UK electricity rate of 24p per kWh. Actual costs may vary based on your specific tariff and thermostat cycling.
| Heater Wattage | Cost Per Hour | Cost Per Day (4 hrs) | Cost Per Month (30 days) | Energy Used Per Day |
|---|---|---|---|---|
| 1000W (1kW) | 24p | £0.96 | £28.80 | 4 kWh |
| 1500W (1.5kW) | 36p | £1.44 | £43.20 | 6 kWh |
| 2000W (2kW) | 48p | £1.92 | £57.60 | 8 kWh |
| 2500W (2.5kW) | 60p | £2.40 | £72.00 | 10 kWh |
| 3000W (3kW) | 72p | £2.88 | £86.40 | 12 kWh |
Fan Heater Cost FAQ
Everything you need to know about calculating and reducing your electric fan heater running costs.
At the UK average electricity rate of 24p per kWh, a 2kW (2000W) fan heater costs approximately 48p per hour to run. This is calculated by multiplying the kilowatts (2kW) by the cost per kWh (24p).
To calculate the running cost: 1) Find the heater’s wattage (e.g., 2000W). 2) Divide by 1000 to get kilowatts (2kW). 3) Multiply by your electricity rate in pence per kWh (e.g., 24p). 4) Multiply by the number of hours used. For a 2kW heater used for 3 hours at 24p/kWh, the cost is 2 x 24 x 3 = 144p (£1.44).
Fan heaters are generally cheap to purchase but can be expensive to run for long periods because they use 100% of their rated wattage continuously when the thermostat is calling for heat. They are most cost-effective for short, targeted bursts of heat in small rooms rather than heating an entire house.
To reduce costs: use the heater’s thermostat to avoid overheating the room, only heat the room you are currently using, ensure doors and windows are closed to prevent drafts, and consider using a timer so it doesn’t run unnecessarily. Improving room insulation also significantly reduces heat loss.