Fan heater running cost UK
Updated: 22 October 2026
You are about to leave a 2 kW fan heater on all evening and you want the bill in pounds and pence before the smart meter moves. Fan heater running cost in the UK follows kilowatts drawn over hours, times your unit rate. Ceramic, PTC and ECO do not repeal that. The [heater comparison](/hub/heating/heater) lists twelve plug-in units, mostly titled between 1,500 W and 2,000 W, sometimes with a conflicting attribute table. Cost the power you use. Peter F. checked the listings and public UK sources, including the Ofgem cap. There was no lab test. A qualifying purchase can earn a commission at no extra cost to you.
You are about to leave a 2 kW fan heater on all evening and you want the bill in pounds and pence before the smart meter moves. Fan heater running cost in the UK follows kilowatts drawn over hours, times your unit rate.
You are about to leave a 2 kW fan heater on all evening and you want the bill in pounds and pence before the smart meter moves. Fan heater running cost in the UK follows kilowatts drawn over hours, times your unit rate. Ceramic, PTC and ECO do not repeal that. The heater comparison lists twelve plug-in units, mostly titled between 1,500 W and 2,000 W, sometimes with a conflicting attribute table. Cost the power you use. Peter F. checked the listings and public UK sources, including the Ofgem cap. There was no lab test. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Output | About per hour | Thermostat | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  DREO DREO DR-HSH026 White | 1500 W | About 39.5p | Named | 9.4 | about £42.49 | View offer |
 Amazon Basics Amazon Basics DQ075 - UK | 1800 W | About 47.4p | Adjustable | 8.8 | about £9.90 | View offer | |
| Best value |  Warmlite Warmlite WL44002 | 2000 W on high | About 52.6p | Dials, no timer | 8.4 | about £9.00 | View offer |
On this page
The formula in plain English
Energy in kilowatt-hours equals power in kilowatts times hours. Cost equals those kilowatt-hours times your pence-per-kWh rate. A 2 kW heater at full draw for one hour uses 2 kWh. At 26.32 pence per kWh that hour is about 52.6 pence, before standing charges.
Standing charges are separate. Ofgem lists an average of 54.83 pence per day for electricity on Direct Debit in the same cap window, so the hourly heater sums ignore them. Northern Ireland is outside the GB cap figures quoted here. Use your supplier rate if you live there.
If the heater is not on full power for the whole hour, scale down. A low setting that truly halves the draw halves the hourly cost. A thermostat that cycles off near the set point reduces average draw. It does not change the price of each minute the element is on.
Worked examples at the October to December 2026 cap
Ofgem’s average GB Direct Debit electricity rate for 1 October to 31 December 2026 is 26.32 pence per kWh. The figures below use that rate and assume continuous full draw.
At 1 kW for one hour: 1 kWh times 26.32 pence is about 26.3 pence. Warmlite WL44001’s title says 2,000 W and the heat-output field says 1,000 W, so check which setting you are actually on before you use the 1 kW line.
At 1.5 kW for one hour: about 39.5 pence. Dreo DR-HSH026’s title and heat-output field both say 1,500 W. DR-HSH006’s title says 1,500 W and the heat-output field says 35°C, which is not a wattage.
At 1.8 kW for one hour: about 47.4 pence, close to the 1,800 W named for Amazon Basics DQ075. At 2 kW for one hour: about 52.6 pence. Warmlite WL44002 on high, Fitabok YND-2000C and several other towers sit in that band.
Four hours at full 2 kW without cycling is 8 kWh, about £2.11 in energy alone. A habit of 2 kW for four hours every day lands near £64 a month at this rate. That is a warning about the habit, not a forecast for your home. Minthouz lists 1,500 W in the heat-output row against a 2 kW title. When the title and the table disagree, budget the higher setting you might select until you have measured it.
Why ceramic, PTC and ECO do not remove the watts
A ceramic PTC element changes how heat feels at first. It does not turn a 2 kW setting into a 1 kW bill while the element is energised at 2 kW. Checkatrade’s notes on resistance heaters match that: there is no large efficiency split at the plug between ordinary electric room heaters at the same wattage.
ECO usually means a lower average power or tighter cycling. It helps when it cuts time at full draw. It does not halve the cost if the fan still runs for hours or you leave the door open. Energy efficient in a title is marketing unless it is tied to a lower measurable draw. For a worst-case budget, assume full power. Which type of heater to buy, before you cost it, is in the electric heater buying guide.
One room versus heating the whole house
Heating one closed room with a portable fan heater can cost less than running every radiator for one person’s evening. One household smart-meter anecdote is only that household: targeted electric heat cost them less than firing the whole gas system for a short occupancy. Your tariff, boiler and insulation differ. This page does not treat that anecdote as your bill.
An open door wastes money faster than a label saves it. Heat leaves for the hall, and a tower thermostat calls for more minutes at 2 kW. Close the room, block an obvious draught, and switch off when you leave. If you pre-heat a bedroom, switch off before sleep. The hourly cost does not change the overnight rule on fan heater bedroom.
This page does not crown the cheapest ASIN to run. At equal wattage and equal hours, the difference between rows is the purchase price, not the pence per hour.
What to budget before you leave it on
Budget full nameplate power for the hours you will actually stay in the room, then expect a thermostat to come in under that if the door stays shut. At this cap rate, a 2 kW hour is about 52.6 pence and a 1.5 kW hour is about 39.5 pence. Four unattended hours at 2 kW are about £2.11 before the standing charge. If you need a model for the room rather than a rate, use best portable heater UK. The pence do not pick a winner.
Common questions
How many pence per hour is a 2 kW fan heater?
About 52.6 pence per hour at 26.32 pence per kWh, if the heater stays on full 2 kW for the whole hour. That is 2 kWh times the Ofgem average GB Direct Debit rate for 1 October to 31 December 2026. Your tariff can differ from the cap average. Standing charges are extra and are not inside that hourly figure. Northern Ireland is not on this GB rate.
Is a 1,500 W heater cheaper to run than 2 kW?
Yes, in proportion, when both run at their rated full power for the same time. At 26.32 pence per kWh, 1.5 kW is about 39.5 pence an hour and 2 kW is about 52.6 pence. A 2 kW unit on a low setting can undercut a 1.5 kW unit on high if that low setting truly draws less. Confirm the low wattage in the listing or on a meter. A title that merely says low is not the measurement.
Does ECO mode halve the bill?
Only if it halves the average draw across the session. ECO on these heaters usually means tighter cycling or a lower step, not a guaranteed 50 percent cut. Watch whether the element actually switches off near the set point, or whether the fan keeps running for hours. A badge on the box is not the measurement. An open door can wipe out the saving by keeping the heater at full power.
Does a ceramic heater cost less than a wire fan heater?
Not at the same wattage for the same hours. Ceramic and PTC change how the heat feels at first. The supplier bills kilowatt-hours. A 2 kW ceramic tower on full draw costs the same per hour as a 2 kW wire element at 26.32 pence per kWh, about 52.6 pence. Checkatrade’s resistance-heater notes describe the same point: no large efficiency gap at the plug between ordinary electric room heaters.
How do I account for a thermostat cycling?
Estimate the duty cycle. If the element is on for about half the hour once the room is near the set point, halve the full-power hourly figure as a rough guide. A 2 kW heater would then be nearer 26 pence for that settled hour, not 52.6 pence. A cold start and a leaky room push the duty cycle back up. The first minutes after you plug in are often full power, so do not apply the half-hour guess to the whole evening.
What if I heat one room instead of the whole house?
It is often cheaper for a short time when only one person is in, because you are not heating every radiator. It depends on your gas or heat-pump cost and on how long the portable heater stays at full power. One household’s smart-meter comparison is a single anecdote, not your tariff. Close the door. An evening at 2 kW is four hours times about 52.6 pence if it never cycles, about £2.11, before you decide it beat the boiler.
Does Northern Ireland use the same cap figure?
No. The 26.32 pence per kWh figure here is Ofgem’s average for Great Britain on Direct Debit, for 1 October to 31 December 2026, covering England, Scotland and Wales. Northern Ireland is outside that cap. Use the unit rate on your own bill or from your supplier, then multiply by the kilowatts and the hours. The standing charge is still separate from the hourly heater sum.
Why does an open door make the meter move faster?
You pay to warm air that leaves the room. The heater then stays on longer, or spends more of the hour at full power, to replace that heat. A thermostat cannot hold the set point if the door is open onto a cold hall. Closing the door cuts runtime more reliably than an ECO label. The unit rate does not change. The number of kilowatt-hours does.
Related pages
Sources
Public UK sources named below. amazon.co.uk prices, stars and review counts on these twelve listings were taken from the listing files read on 20 October 2026. Page updated October 2026.
- Ofgem price-cap unit rates, 1 October to 31 December 2026 (retrieved 20 October 2026)
- Electrical Safety First, portable heaters (retrieved 20 October 2026)
- Hertfordshire Fire and Rescue, portable heater safety (retrieved 20 October 2026)
- Electrical Equipment (Safety) Regulations 2016 (retrieved 20 October 2026)
- OPSS product safety report, fan heater ML-9001, 2511-0255 (retrieved 20 October 2026)
- SELECT guide to BS 7671 Section 701 (retrieved 20 October 2026)
- Checkatrade, heater running cost (retrieved 20 October 2026)
- Good Housekeeping UK heater guide, 6 October 2026 (retrieved 20 October 2026)