How much does it cost to run a oil-filled radiator?
A oil-filled radiator typically draws about 2,000 W. At the current Ofgem price-cap electricity rate of 26.11p/kWh (1 July to 30 September 2026), a typical 4-hour use costs about £2.09, and one hour costs roughly 52.2p.
Oil-filled radiator running cost: ~2.00 kWh per hour ≈ 52.2p/hour. A typical 4-hour use ≈ £2.09 at 26.11p/kWh.
Oil-filled radiator running-cost calculator
A oil-filled radiator draws about 2,000 W. Set how long you run it and we apply the current Ofgem electricity unit rate of 26.11p/kWh.
Cost to run for 4 hours
£2.09
Uses 8.00 kWh at 26.11p/kWh.
- Per day
- £2.09
- Per week
- £14.62
- Per year
- £762.41
Per-day/week/year figures assume one 4-hour run each day. Wattage is typical/indicative — your model may differ.
How the cost is worked out
- Wattage: a oil-filled radiator draws about 2,000 W.
- Convert to kW: 2,000 ÷ 1,000 = 2.00 kW.
- Multiply by hours: 2.00 kW × 4 h = 8.00 kWh.
- Multiply by the unit rate: 8.00 kWh × 26.11p ≈ £2.09.
Frequently asked questions
How much does it cost to run a oil-filled radiator?
A oil-filled radiator draws about 2,000 W. At the Ofgem cap rate of 26.11p/kWh (1 July to 30 September 2026), a typical 4-hour use costs roughly £2.09, and one hour costs about 52.2p.
How much electricity does a oil-filled radiator use per hour?
At 2,000 W, a oil-filled radiator uses about 2.00 kWh per hour, which is roughly 52.2p at the current cap rate.
Running costs for other appliances
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Wattage (2,000 W) is typical/indicative — your model may differ. Source: Heatable — How much energy do appliances use (typical ratings; draws on Energy Saving Trust / Centre for Sustainable Energy). Electricity unit rate from Ofgem — Energy price cap unit rates and standing charges (cap period 1 July to 30 September 2026, fetched 2026-06-18). Ofgem figures © Ofgem, Open Government Licence v3.0. Appliance wattages are typical/indicative, not measured. Ofgem.