The fast reply: heating one occupied room for an hour or two might use much less power total than heating a number of rooms. However electrical energy prices extra per kWh than gasoline on Ofgem’s common October 2026 charges. A transportable electrical heater operating for a lot of hours is subsequently not routinely cheaper than utilizing gasoline central heating with smart room controls.
How a lot does it value to run an electrical heater?
Use this calculation: heater energy in kilowatts × hours used × your electrical energy unit charge.
On Ofgem’s common Direct Debit electrical energy charge of 26.32p per kWh from 1 October to 31 December 2026, the illustrative prices are:
| Heater energy | One hour at full energy | 4 hours at full energy |
|---|---|---|
| 1 kW | About 26p | About £1.05 |
| 2 kW | About 53p | About £2.11 |
These figures assume the heater attracts its acknowledged energy repeatedly. A thermostatic heater might change on and off as soon as the room reaches its set temperature, so its precise use may very well be decrease. Your regional charge or fastened tariff may additionally differ from the Ofgem common.
The electrical energy standing cost is excluded from these examples since you usually pay it whether or not or not you utilize the transportable heater. In case you are contemplating disconnecting a gas totally, that may be a totally different comparability.
Is that cheaper than placing the gasoline central heating on?
From October, Ofgem’s common gasoline unit charge for a Direct Debit buyer is 7.97p per kWh, in contrast with 26.32p per kWh for electrical energy. However evaluating these two charges alone doesn’t let you know which technique prices much less: a gasoline boiler heats water and will heat a number of rooms, whereas an electrical heater delivers warmth straight to 1 area.
To match your selections, ask:
- What number of rooms have to be snug? If a number of persons are utilizing totally different rooms, heating one room is unlikely to satisfy everybody’s wants.
- For the way lengthy? A brief burst of native warmth is a special proposition from operating a transportable heater all through the day.
- What does your system do? Are you able to cut back warmth to little-used rooms utilizing thermostatic radiator valves, or is your heating managed otherwise?
- What are your charges? Examine the gasoline and electrical energy costs per kWh in your invoice, particularly when you have a hard and fast or time-of-use tariff.
For an actual comparability, file your meter readings earlier than and after related intervals of use on comparable days. Word the outside temperature and which rooms had been heated. A single afternoon can’t show what’s most cost-effective all winter, however it could reveal whether or not a transportable heater is utilizing extra electrical energy than you anticipated.
When you’ve got a warmth pump or electrical storage heating: don’t assume recommendation for a gasoline boiler applies to your system. Warmth pumps work otherwise from direct electrical heaters, whereas storage-heater prices rely closely on whenever you cost them and your day and night time tariff. Examine your system directions or ask an installer for recommendation earlier than altering its regular schedule.
Can you warmth fewer rooms with out counting on a transportable heater?
Usually, sure. When you’ve got gasoline central heating with thermostatic radiator valves, you might be able to flip down radiators in rooms you utilize much less whereas preserving occupied rooms snug. Power Saving Belief recommends utilizing heating controls to warmth your private home when and the place you want it.
Preserve radiators away from furnishings, test that your timer displays when persons are truly at residence, and take care of apparent draughts. If rooms stay troublesome to warmth, take a look at insulation and whether or not the heating system wants consideration. Keep away from making main adjustments to boiler settings until you understand what the management does and whether or not it impacts scorching water in addition to radiators.
If the price of heating is troublesome to handle, test our October 2026 power price-cap information for a proof of present charges. If the quantity in your invoice appears unexpectedly excessive, use our seven energy-bill checks earlier than assuming your heating habits are totally accountable.
The prices you shouldn’t overlook: chilly rooms, damp and hearth security
Saving cash issues, however so does preserving the rooms individuals use heat sufficient. UK well being steerage advises attempting to warmth incessantly used rooms, reminiscent of a lounge or bed room, to at the very least 18°C. That is significantly necessary for older individuals, individuals with lowered mobility and people with sure well being circumstances. Particular person wants might differ, so observe medical recommendation the place related.
Leaving different rooms very chilly for lengthy intervals can even contribute to condensation and mold, particularly the place moisture and air flow are issues. If you happen to discover persistent damp, take it critically slightly than treating it as a vital trade-off for a smaller invoice.
Utilizing a transportable heater? Preserve it nicely away from bedding, curtains, furnishings and garments. Don’t use it to dry laundry. Place it the place no person is more likely to journey over it or fall towards it, and observe the producer’s directions. London Fireplace Brigade advises sitting at the very least one metre away from a heater.
A heated throw can heat an individual slightly than a whole room, however it doesn’t make a dangerously chilly room protected. Observe its security directions and test the equipment’s energy ranking to estimate operating prices. By no means use an electrical blanket and scorching water bottle collectively.
So, which is cheaper for you?
- One particular person, one room, a brief spell: native heating might value much less total than warming a number of empty rooms. Calculate the heater’s hourly value first.
- A number of occupied rooms or a complete day at residence: central heating with well-used controls could also be extra sensible and will value lower than operating transportable heaters for hours.
- Somebody at greater threat from chilly: put a protected, snug room temperature first and search assist with payments if value is forcing you to depart occupied rooms too chilly.
- Storage heaters or a warmth pump: examine utilizing the directions and tariff to your explicit system.
In case you are struggling to afford a protected degree of heating, contact your provider about cost help and test whether or not you qualify for the £150 Heat Dwelling Low cost for winter 2026/27. In case your power account is considerably in credit score, our power credit score refund information
The MoneyMagpie verdict: heating just one room is a potential saving, not a rule. Work out the operating value of your precise heater, use the controls already in your house, and ensure the rooms individuals occupy stay protected and comfy.
Sources: Ofgem October 2026 charges; Power Saving Belief heating controls; UK authorities cold-weather recommendation; London Fireplace Brigade heater steerage. Checked 24 September 2026.
Disclaimer: The operating prices proven are illustrations at Ofgem’s common October 2026 Direct Debit electrical energy charge. Your tariff, heating system, insulation, climate and utilization will have an effect on what you pay. Observe the directions to your home equipment and search applicable recommendation about well being or heating-system issues.
