TL;DR — Gas Fire Installation Cost At A Glance
- Fitting labour typically costs £300 – £800, on top of the fire itself at £150 – £1,500 depending on the model.
- A complete job — fire supplied and fitted — usually lands at £600 – £1,800 inc VAT for most homes.
- London and the South East add roughly 20% to labour.
- The flue type and whether you have a chimney are the biggest cost drivers, followed by the fire style and any building work.
- A gas fire must be installed by a Gas Safe registered engineer qualified for gas fires and flues — this is a legal safety requirement.
- Getting the old fire decommissioned and removed at the same visit avoids a second call-out fee.
Book gas fire installation with a Gas Safe registered engineer — check prices and book online or call to talk through the right fire and flue for your home.
How Much Does Gas Fire Installation Cost In 2026?
Installing a gas fire in the UK costs £300 – £800 in labour, with the fire unit adding £150 – £1,500 depending on the style and brand. Put together, a typical supply-and-fit job lands at £600 – £1,800 inc VAT, and in London and the South East you can add roughly 20% to the labour element.
The labour figure covers safely disconnecting any existing fire, fitting the new appliance, connecting the gas supply, testing for soundness and commissioning the fire so it runs correctly. The wide range comes down to the flue arrangement: a straightforward swap into an existing, lined chimney is quick, while a flueless or balanced-flue fire in a home without a suitable chimney needs more work, and sometimes building work or a new flue liner.
A basic inset gas fire is the most affordable option. Contemporary "hole-in-the-wall" fires, glass-fronted high-efficiency models and freestanding gas stoves cost more for both the unit and the fitting. Whatever you choose, the work is safety-critical and must be carried out by a Gas Safe registered engineer qualified for gas fires.
Here is what gas fire installation typically costs across the UK in 2026:
| Element | Rest of UK | London & South East |
|---|---|---|
| Fitting labour (straightforward swap) | £300 – £500 | £360 – £600 |
| Fitting labour (new flue/building work) | £500 – £800 | £600 – £950 |
| Fire unit (supply only) | £150 – £1,500 | £150 – £1,500 |
| Complete supply-and-fit (typical) | £600 – £1,800 | £750 – £2,200 |
Figures include VAT and reflect 2026 market rates. Your exact price depends on the fire, flue and postcode — get a fixed quote here.
Gas Fire Installation Cost By Fire Type
The type of fire affects both the unit price and how involved the fitting is. These are typical complete supply-and-fit figures for the rest of the UK; add around 20% for London.
| Fire type | Fire unit | Complete supply & fit |
|---|---|---|
| Inset gas fire (into existing fireplace) | £150 – £600 | £500 – £1,100 |
| Outset gas fire (sits on hearth) | £200 – £700 | £550 – £1,200 |
| Hole-in-the-wall / contemporary | £500 – £1,200 | £900 – £1,800 |
| Balanced-flue gas fire (no chimney needed) | £500 – £1,500 | £1,000 – £2,200 |
| Flueless gas fire | £400 – £1,200 | £800 – £1,700 |
| Freestanding gas stove | £600 – £1,500 | £1,000 – £2,200 |
Prices assume a standard domestic installation. A new flue liner, hearth or surround, or major building work will add to the total.
What Affects The Cost Of Gas Fire Installation?
Several factors decide where a job lands in the ranges above.
1. The Flue Type And Your Chimney
This is the biggest driver. Fitting a fire into an existing, sound chimney is quickest. A home without a chimney needs a balanced or power flue, and an older chimney may need a new flue liner (£300 – £800 on its own), both of which add cost.
2. The Type And Style Of Fire
A basic inset fire is cheapest to buy and fit. Contemporary hole-in-the-wall fires, glass-fronted high-efficiency models and freestanding stoves cost more for the unit and often take longer to install neatly.
3. Building And Making-Good Work
If the fireplace opening needs enlarging, a new hearth or surround, plastering or decorating afterwards, those add to the bill. A like-for-like swap avoids most of this.
4. Removing The Old Fire
Disconnecting and safely removing an existing gas fire is usually included in a fitting quote, but confirm it — otherwise it can appear as an extra. Combining removal and installation in one visit avoids a second call-out.
5. Your Location
London and the South East run roughly 20% higher on labour than the rest of the UK, reflecting higher wage and travel costs.
What's Included — And What's Not
A gas fire installation usually includes:
- Safely disconnecting and removing the old gas fire
- Fitting and connecting the new appliance to the gas supply
- A tightness (soundness) test on the gas connection
- Flue and ventilation checks
- Commissioning the fire and checking it runs safely
- A written record and, where applicable, notification of the work
Usually not included:
- The fire unit itself (unless quoted as supply and fit)
- A new flue liner where the chimney needs one
- A new hearth, surround or fireplace opening work
- Plastering, tiling or decorating to make good
- A central heating service or work on other gas appliances
Always get a written quote that spells out what is included, so the final bill matches the estimate.
Can You Do It Yourself?
No. Installing a gas fire is not a DIY job under any circumstances. Connecting an appliance to the gas supply is safety-critical work that must be carried out by a Gas Safe registered engineer who holds the correct qualification for gas fires and flues. Doing it yourself is illegal, invalidates home insurance, and risks gas leaks or carbon monoxide poisoning.
What you can do is prepare. Choose the fire, clear the fireplace and surrounding area, and make sure there is easy access on the day. If you are updating the surround or hearth, a separate tradesperson can handle the cosmetic side, but the fire connection and commissioning must be left to a Gas Safe engineer. Fitting a carbon monoxide alarm nearby is a sensible, legally recommended step — see the carbon monoxide alarm installation cost guide.
How To Save Money On Gas Fire Installation
- Choose a like-for-like swap where possible — reusing the existing chimney and opening keeps labour low.
- Combine removal and installation in one visit to avoid a second call-out fee.
- Buy the fire yourself if the engineer is happy to fit a customer-supplied appliance — but confirm it is compatible and correctly rated first.
- Get 2–3 quotes and compare labour and materials separately, not just the headline price.
- Book off-peak — late spring and summer are quieter than the run-up to winter.
- Keep the surround simple — elaborate hearths and building work add far more than the fire itself.
How To Hire A Good Gas Fire Installer
Check that the engineer is on the Gas Safe Register and specifically qualified for gas fires and flues — the register lists what each engineer is signed off to work on, so verify the card and number. Confirm they carry insurance, will carry out a tightness test and flue check, and will give you a written commissioning record on completion. Fixed, transparent pricing that separates labour and materials avoids surprises.
With Fantastic Services, you get Gas Safe registered engineers, upfront pricing and easy online booking — describe your fireplace and the fire you want, and get a price before work starts.
Frequently Asked Questions
How Much Does It Cost To Install A Gas Fire In 2026?
Fitting labour costs £300 – £800, and the fire unit adds £150 – £1,500. A complete supply-and-fit job typically lands at £600 – £1,800 inc VAT, or more for a contemporary fire in a home that needs a new flue. London and the South East add roughly 20%.
Does A Gas Fire Have To Be Installed By A Gas Safe Engineer?
Yes. Installing or connecting a gas fire is safety-critical work that must be carried out by a Gas Safe registered engineer qualified for gas fires and flues. It is illegal for anyone else to do it, and DIY installation invalidates insurance.
Can A Gas Fire Be Fitted Without A Chimney?
Yes. A balanced-flue or flueless gas fire can be fitted in a home without a chimney. A balanced flue vents through an outside wall, while a flueless fire uses a catalytic converter and room ventilation. Both cost more to buy and fit than a standard inset fire.
How Long Does Gas Fire Installation Take?
A straightforward like-for-like swap usually takes half a day. A job that needs a new flue liner, building work or a balanced flue can take a full day or longer.
Does The Cost Include Removing The Old Fire?
It usually does, but confirm it in the quote. Safely disconnecting and removing an existing gas fire is often bundled into the fitting price, and combining removal with the new installation avoids a second call-out.
Do You Need A New Flue Liner For A Gas Fire?
Sometimes. An older or damaged chimney may need a new flue liner to vent safely, which adds £300 – £800. A Gas Safe engineer will check the flue during the survey and advise whether a liner is required.
Is A Gas Fire Cheaper To Run Than Central Heating?
It can be for heating a single room, since you warm only the space you are in rather than the whole house. High-efficiency glass-fronted models run more economically than older open-fronted fires. For whole-home heating, central heating is usually more efficient.
