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Energy-saving fan heater running cost

Updated: 16 October 2026

You want pence, not a box percentage. The energy saving fan heater running cost of a full-power hour in Great Britain is watts divided by 1,000, times the unit rate. From 1 October to 31 December 2026, Ofgem’s typical Direct Debit cap is 26.32p per kWh in England, Scotland and Wales. Eco mode only helps while the element is off. Shelf prices are on the [energy-saving fan heater comparison](/hub/portable-heaters/energy-saving-fan-heater). The Products Compared editorial team worked these hours on 16 October 2026 from that Ofgem rate and these wattages. We did not meter a home. A qualifying purchase can earn a commission at no extra cost to you. Northern Ireland is outside this cap.

You want pence, not a box percentage. The energy saving fan heater running cost of a full-power hour in Great Britain is watts divided by 1,000, times the unit rate.

Our top picks

Dreo Dreo Atom 316 1500 W

Best overall

Dreo Dreo Atom 316 1500 W
9.2/10about £49.99
View offer
Philips Philips CX2120/01 1500 W

Alternative

Philips Philips CX2120/01 1500 W
8.4/10about £49.99
View offer
Warmlite Warmlite WL44002 2000 W

Preis-Tipp

Warmlite Warmlite WL44002 2000 W
8.0/10about £9.00
View offer
On this page
  1. 1.The full-power hour
  2. 2.Pence at the wattages these listings state
  3. 3.What eco mode does to the bill
  4. 4.One room versus the heating system

The full-power hour

Ofgem’s window is 1 October to 31 December 2026. The 26.32p per kWh figure is the average cap for a typical Direct Debit in England, Scotland and Wales. The same note shows a standing charge of 54.83p per day. Do not subtract that from an hour of heat. Divide watts by 1,000, then multiply by 26.32. A 2,000 W heater is about 53p for a continuous hour. A 1,500 W heater is about 39p. The same watts, for the same full-power hour, cost the same. If your rate differs, use your own pence. How to avoid a 2,000 W-only listing is on the buying guide.

Pence at the wattages these listings state

Each figure is one continuous hour at full power, at 26.32p per kWh, in England, Scotland and Wales: about 16p at 600 W, about 21p at 800 W, about 26p at 1,000 W, about 32p at 1,200 W, about 39p at 1,500 W, about 47p at 1,800 W and about 53p at 2,000 W. The Philips CX2120/01 states 600 W and 1,500 W, so one heater can be the 16p hour or the 39p hour. Timiyou states 800 W and 1,200 W. Some Dreo bullets add 900 W or 1,100 W, so use the same formula. The Warmlite WL44002 is about £9.00 and states 1,000 W and 2,000 W. An hour at 2,000 W is about 53p, the same as a £49.99 heater on 2,000 W. Element type does not move these rows. That choice sits on the ceramic versus wire page.
Dreo Dreo Atom 316 1500 W

Testsieger

Dreo Dreo Atom 316 1500 W
9.2/10about £49.99
View offer

What eco mode does to the bill

Eco mode changes how many minutes the element is on. It does not change the watts of those minutes. Philips’ up to 25%, Dreo’s up to 40% on the brand site, and a WGOE line around 22–28% are brand claims. We are not applying them. Suppose 2,000 W would be about 53p for a continuous hour, and the element heats for only half of it. The heat is then on the order of half, as a rule of thumb, not a measured cycle for your house. A draught, an open door or a high setpoint can push the on-time back towards the full hour.

One room versus the heating system

The Centre for Sustainable Energy sets the scale. A fan heater can still cost more than heating a whole home for long periods. One occupied room, on a lower setting, can be the smaller step. Several hours a day, or 2,000 W with the doors open, can cost more than the boiler. This page does not invent a gas price. The listing cannot state a monthly cost. Use the figures as the price of a full-power hour, then count the hours you expect.

Common questions

How much is a 2,000 W fan heater per hour in Great Britain this quarter?
About 53p for a continuous hour, at Ofgem’s 26.32p per kWh Direct Debit cap in England, Scotland and Wales, from 1 October to 31 December 2026. The sum is 2 kW × 26.32p, and it assumes the element stays on. If a thermostat cycles, you pay for the on-time. Do not use 53p in Northern Ireland.
Does eco mode cut that figure by 25%?
No. Do not deduct Philips’ up to 25%, Dreo’s up to 40%, or a WGOE claim around 22–28% from the hour. Eco mode is a setpoint. You pay the wattage for the minutes the element is on. This set has no single percentage.
Is a £9 heater cheaper to run than a £50 heater?
Only on a lower wattage, or if the element is on for fewer minutes. The WL44002 at about £9.00 still states 1,000 W and 2,000 W. A continuous hour at 2,000 W is about 53p, the same as a £49.99 heater on 2,000 W. The £9 is the checkout price. A Philips on 600 W, about 16p an hour at full power, can cost less to run than the £9 heater left on 2,000 W.
Does the standing charge go up because I used the heater?
No. Ofgem’s 54.83p per day, on this Direct Debit electricity cap in England, Scotland and Wales, is charged for the day. It does not rise because you ran a heater for an hour. The heater adds units at your unit rate.
Does this cap apply in Northern Ireland?
No. The 26.32p per kWh figure is Ofgem’s cap for a typical Direct Debit in England, Scotland and Wales for 1 October to 31 December 2026. Northern Ireland’s price is set separately. Use the unit rate on your own bill: watts divided by 1,000, times pence per kWh.
Is a fan heater cheaper than leaving the boiler on?
For one room, sometimes. The Centre for Sustainable Energy notes that a long fan-heater run can cost more than central heating. A short spell in a shut room, on a lower setting, can be the smaller step. Many hours, or 2,000 W with the doors open, can go the other way. Your gas rate is not on the listing, so this page will not invent that bill.

Related pages

How to use an energy-saving fan heater

Energy-saving fan heaters

Best energy-saving fan heater for one small UK room

Energy-saving fan heater buying guide for UK homes

Ceramic vs wire energy-saving fan heater, compared

Sources

Public UK sources for the running-cost and safety points. Star lines and shelf prices are from the amazon.co.uk listings in this set. Last checked 16 October 2026.

  1. Ofgem price-cap unit rates (retrieved 16 October 2026)
  2. Centre for Sustainable Energy: room heaters (retrieved 16 October 2026)
  3. Energy Saving Trust: electric heaters compared (retrieved 16 October 2026)
  4. GOV.UK: placing energy-related products on the UK market (retrieved 16 October 2026)
  5. Electrical Safety First: portable heaters (retrieved 16 October 2026)
  6. Electrical Equipment (Safety) Regulations 2016 (retrieved 16 October 2026)
  7. BS EN 60335-2-30: room heater safety (retrieved 16 October 2026)
  8. Hertfordshire Fire and Rescue: portable heater safety (retrieved 16 October 2026)