The Short Answer
On our estimates, a new gas fire costs about £500 to £1,500 supplied and fitted, in two to three hours. A flueless fire, for a room without a chimney, is £800 to £2,000. Taking an old gas fire out and capping the supply is £180 to £250, and a yearly service £95 to £120.
The type of fire sets most of the price, from a simple inset fire to a balanced flue model. All of it is Gas Safe work, and a new fire needs a carbon monoxide alarm in the room.
Gas fire prices
| Job | Typical cost |
|---|---|
| Fit a new gas fire (two to three hours) | £500 to £1,500 |
| Replace with a flueless fire (three to four hours) | £800 to £2,000 |
| Remove a gas fire and cap the supply (one to two hours) | £180 to £250 |
| Annual service and safety check | £95 to £120 |
| Gas Safe engineer, per hour | £50 to £100 |
Prices by type of fire
| Type | Supplied and fitted |
|---|---|
| Inset open-fronted | £350 to £1,050 |
| Outset living flame | £480 to £1,050 |
| High-efficiency glass-fronted | £470 to £1,500 |
| Flueless | £470 to £1,550 |
| Balanced flue | £1,050 to £1,950 |
I'd start by having an engineer check what chimney or flue you have, because that decides which of these can go in.
What a gas fire costs to run
It depends mostly on whether the fire has a glass front. Gazco's published figures make a good example: its glass-fronted Logic HE gives 3.8kW of heat at up to 89% efficiency, about 34p an hour on full at the 1 October to 31 December 2026 gas price cap. Its open-fronted convector gives 4.2kW at 68.5%, about 49p an hour, because more of the heat goes up the flue.
Per unit of heat, that's about 9.0p a kWh from the glass-fronted fire and 11.6p from the open one, against about 8.7p from a boiler at the 92% efficiency building regulations require of a new gas boiler. So a gas fire isn't a cheaper source of heat than modern central heating. It saves money only when it lets you heat one room and leave the heating off in the rest of the house.
Ventilation
Approved Document J says a flueless gas fire may need a permanently open air vent, a way to air the room quickly (such as an opening window), or both, depending on the fire and the room. A decorative fuel-effect fire in a fireplace normally needs a permanent vent too, unless it's a small one in a home that isn't very airtight, and for other fires it depends on their output. The engineer works out what yours needs; if a vent is needed, ask for it to be in the quote.
Safety, certificates and servicing
- Fitting, servicing or removing a gas fire must be done by a Gas Safe registered engineer: it's the law, not advice. Ask for their Gas Safe ID card: the back lists the kinds of gas work they're qualified for. See checking a gas engineer.
- Approved Document J asks for a carbon monoxide alarm in the room when a new or replacement gas fire is fitted.
- The engineer notifies the installation through Gas Safe Register within 30 days, and a Building Regulations certificate follows by post.
- Gas Safe Register recommends a safety check and service every year, and lists the warning signs to act on: a floppy yellow flame, black or brown marks around the fire, and more condensation in the room than usual.
- Landlords must have every gas appliance and flue checked by a Gas Safe engineer at least every 12 months and give tenants the record within 28 days. See gas safety checks for landlords.
Removing a gas fire
Taking out a gas fire is gas work, so it needs a Gas Safe engineer: about £180 to £250 to remove it and cap the supply, in one to two hours. I'd ask them to confirm in writing that the supply is capped off. If you're replacing it with a stove or opening the fireplace up, see log burners and fireplaces.
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Frequently asked questions
How much does a gas fire cost to run per hour?
About 34p an hour on full for a glass-fronted high-efficiency fire of about 3.8kW, and 49p for an open-fronted 4.2kW fire, at the current gas price cap. On a lower setting it costs less.
Is it cheaper to run a gas fire than central heating?
Not per unit of heat: a glass-fronted fire costs about 9.0p a kWh against about 8.7p from a modern condensing boiler. It only saves money if it lets you heat one room instead of the whole house.
How much does it cost to fit a gas fire?
On our estimates, about £500 to £1,500 supplied and fitted, or £800 to £2,000 for a flueless fire.
Do I need a gas engineer to remove a gas fire?
Yes. It's gas work, so it must be a Gas Safe registered engineer: about £180 to £250 to remove it and cap the supply.
Do flueless gas fires need ventilation?
They may. Approved Document J says some flueless fires need a permanently open air vent, a way to air the room quickly, or both, depending on the fire and the room. The engineer works out what yours needs.
How much is a gas fire service?
About £95 to £120 for a yearly service and safety check, taking one to two hours.
Do I need a carbon monoxide alarm with a gas fire?
Yes, when a new or replacement gas fire is fitted in England, building regulations ask for one in the same room.
How we priced thisView sources (8, 7 official)
Rules come from the legislation and official guidance, read at source. Prices are our estimates: we check them against trade price data, retailer shelf prices and specialists' price lists, then build them up from their parts so the totals add up. Below are the sources behind the page; the trade price guides we only compare against aren’t listed. Where sources disagreed, we've said so. More on our method.
- IndustryGazco Logic gas fires brochure (heat output and maximum efficiency by model), Gazco (Stovax). Checked 16 Oct 2026.
- OfficialEnergy price cap unit rates and standing charges, 1 October to 31 December 2026, Ofgem. Checked 15 Oct 2026.
- OfficialApproved Document L: Conservation of fuel and power, Volume 1 Dwellings (2021 edition incorporating 2023 amendments), GOV.UK. Checked 16 Oct 2026.
- OfficialThe Gas Safety (Installation and Use) Regulations 1998, regulation 3, legislation.gov.uk. Checked 15 Oct 2026.
- OfficialThe Gas Safety (Installation and Use) Regulations 1998, regulation 36: duties of landlords, legislation.gov.uk. Checked 15 Oct 2026.
- OfficialSafety check your gas appliances, Gas Safe Register. Checked 15 Oct 2026.
- OfficialBuilding Regulations Certificate, Gas Safe Register. Checked 15 Oct 2026.
- OfficialApproved Document J: Combustion appliances and fuel storage systems (2010 edition incorporating 2010, 2013 and 2022 amendments), GOV.UK. Checked 16 Oct 2026.
