2 kW heater cost per hour in the UK
Enter the unit rate from your electricity bill to calculate the exact hourly, daily and monthly cost.
Quick reference
From one hour to a full month.
These examples assume the 2 kW heating element remains active for the complete period. A thermostat usually reduces active time after the room warms.
Need a whole-month comparison across heater sizes and thermostat settings? See the UK monthly electric-heating cost guide →
Transparent method
The formula
Cost = heater kW × active hours × electricity unit rateA 2 kW heater uses 2 kWh for every hour its element remains on. Oil-filled radiators, fan heaters, convectors and panel heaters with the same electrical input cost broadly the same while drawing full power.
Read the methodology →What changes the bill
Scheduled time is not always active time.
Thermostat cyclingAt 50% active time, the energy cost is roughly half the full-power example.
Room heat lossInsulation, draughts, room size and outdoor temperature determine how often the heater returns to full power.
Your actual tariffEnter the unit rate from your bill when it differs from the Ofgem reference.
Rate and evidence
Based on a current official reference.
No default rate is loaded. Enter the unit rate from your latest electricity bill.
The Ofgem cap is an average reference for eligible default tariffs in Great Britain. Your region, payment method, meter and contract may produce a different unit rate.
The standing charge is excluded because running the heater does not add another daily standing charge.
Source: Ofgem price-cap unit rates and standing charges ↗