Moving a gas boiler typically costs £1,000 to £3,000. People tend to assume the distance sets the price, but it rarely does. What costs money is everything between the old spot and the new one: floors, joists, walls, the gas pipe, the flue and the condensate drain.
Relocation cost by job size
Typical UK boiler relocation cost, by job size
| Job size | Typical cost | What it usually looks like |
|---|---|---|
| Small | £1,000–£1,500 | A short move within the same room or onto an adjacent wall |
| Typical | £1,500–£2,200 | A move to another room with a new flue and condensate run |
| Large | £2,200–£3,000+ | Kitchen to loft or garage, crossing a floor or roof, concealed pipework |
These tiers divide the £1,000–£3,000 guide for boiler relocation. The job normally runs one to three days. Hidden problems behind plaster can push it up, and the top tier can be exceeded.
What the engineer has to move
- The gas supply, which may need a new pipe run from the meter.
- The flow and return pipes that connect to the radiators.
- The flue, which must exit somewhere suitable for the new position.
- The condensate pipe, which needs a safe place to drain and, in a loft, protection from frost.
- Making good after the old spot is stripped out and the new one is fitted.
Why it can't always go where you want
A boiler needs a flue route and a clear place for the condensate to drain. A loft move, for example, isn't always possible, and an engineer should check the manufacturer's instructions before they quote. Ask for a site visit rather than a phone price.
If the boiler is also old, moving it is a good moment to ask about swapping it. The extra cost is smaller than doing two separate jobs, and our gas boiler installation cost guide shows what the bigger job typically involves. Check your engineer on the Gas Safe Register before any work starts.
Decide where the boiler can go before you finish a kitchen or utility room design. The flue is the part that most often rules a position out.
Frequently asked questions
How much does it cost to move a boiler?
Typically £1,000 to £3,000. A short move is near the bottom, and a move across a floor or into a loft is at the top.
Can a boiler always be moved into a loft?
No. It depends on access, the flue route, condensate drainage and the manufacturer's rules, so the engineer needs to see the space.
How long does a boiler relocation take?
Allow around one to three days, depending on the pipework involved.
Is it cheaper to move the boiler or fit a new one?
If the boiler is old, fitting a new one in the new position often makes sense. Ask for both options in the quote.
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