How Much Does a Fan Heater Cost to Run?
Updated March 2026. Default rate effective 1 April 2026 (Ofgem Q2 2026). Figures are typical estimates rather than model-specific guarantees.
A fan heater is usually one of the fastest but costliest ways to heat a room with electricity. It delivers strong heat quickly, but it normally runs at full power while it is on.
Calculator24.5p/kWh
W
hrs
p/kWh
Per hour
49.0p
Per day
£1.96
Per week
£13.72
Per month
£59.66
Annual cost
£715.40
Typical annual electricity use: 2920.00 kWh
Based on typical fan heater usage at current rates.
Annual estimate
£715.40
Annual electricity use
2920.00 kWh
Typical household bill context
About 108% of a typical home's annual variable electricity spend at the current default rate.
What Affects the Cost of Running a Fan Heater?
Running cost is driven mainly by wattage and hours of use. A fan heater usually has little or no meaningful cycling once it is switched on, so every extra hour matters.
Helpful guides
Compare running costs
Related appliances
Assumptions and methodology
- Electricity rate: 24.5p/kWh (Ofgem Q2 2026)
- Default wattage is based on a typical appliance in this category
- Usage assumptions are meant to be a sensible starting point, not a fixed rule
- Costs vary with tariff, model, settings, load size, and household habits
Tips to Reduce Fan Heater Running Costs
Use a timer and only heat the room you are actually in. Fan heaters are best for short bursts rather than long background heating.