In short
Often, yes. Moving a boiler means new gas, water and condensate pipework, a new flue position and sometimes electrics, so it costs more than a like-for-like swap and takes longer. The new position has to meet the manufacturer's flue and access rules, and the work must be done by a Gas Safe registered engineer.
Why do people move their boiler?
Usually to free up kitchen space, to get a boiler out of a bedroom, or as part of a conversion to a combi when the cylinder cupboard goes. It is often easiest to do at the same time as replacing the boiler, because the new boiler is being fitted anyway.
What does moving a boiler involve?
The flue
The flue must exit where the manufacturer's instructions allow, with set clearances from windows, doors, corners, boundaries and the ground. This is often what decides whether a new position works. Vertical flues through the roof are possible in some lofts.
The gas pipe
A longer gas run from the meter can mean a larger pipe is needed, so the boiler gets enough gas at full output. The engineer will size and test it.
Water and condensate
Heating flow and return pipes, the cold mains and hot water for a combi, and a condensate drain all need rerouting. The condensate pipe should run to an internal drain where possible, because external runs can freeze in winter.
Electrics and controls
The boiler needs a fused spur nearby, and the controls may need rewiring.
Can my boiler go in the loft?
Many can, but manufacturers typically require safe, permanent access, such as a fixed loft ladder, a boarded walkway and floor around the boiler, and a fixed light. The pipes need protecting from frost, and you need to be comfortable going up to read the pressure gauge or reset it. Check the specific model's instructions before deciding.
What does it cost?
Moving the boiler is one of our paid add-ons on top of the new boiler price, which starts from £1,750 inc VAT for a basic like-for-like installation. The cost depends on the distance, the flue, the gas pipe and the making good, so it is priced after a site inspection.
Do I need permission to move a boiler?
Moving or replacing a boiler is notifiable work under the Building Regulations; a Gas Safe registered installer can self-certify it. The Planning Portal says replacing a boiler does not normally need planning permission and an external flue normally falls under permitted development, but check with your planning authority for listed buildings and conservation areas. Leaseholders should check their lease.
What CombiCert would check
We check possible new positions against the manufacturer's flue and clearance rules, the gas pipe run, condensate disposal, electrics and access for future servicing. Only then can we say whether a move is practical and what it adds to a like-for-like price. Subject to a site inspection.
When to call a Gas Safe engineer
Every part of moving a gas boiler, including the gas pipe and flue, is legally work for a Gas Safe registered engineer only. Get a survey before you plan a kitchen or room around a new boiler position, so you know the flue and pipe route will work. See how long an installation takes.
Need a hand? CombiCert in Telford
CombiCert Ltd is a Gas Safe registered (621146) gas and heating company based at The Old School House, Park Lane, Telford TF3 4TG, working across Telford and Shropshire for homes and businesses. We are open Monday to Saturday, 08:00 to 19:45 (closed Sunday).
New boilers from £1,750 inc VAT for a basic like-for-like installation, subject to a site inspection. Most quotes are higher; filters, flushes, thermostats and moving the boiler are paid extras.
See New boiler installation in Telford, or call or WhatsApp 07393 220694, or email hello@combicert.co.uk.
We cover Telford and nearby, including Wellington, Madeley, Dawley, Oakengates, Shifnal, Newport, Ironbridge and Shrewsbury.
Sources
Frequently asked questions
How much does it cost to move a boiler?
It depends on how far it moves and what changes: the flue, gas pipe size, water and condensate runs, and making good. Moving the boiler is a paid add-on on top of our new boiler price, which starts from £1,750 inc VAT for a basic like-for-like installation, and it is priced after a site inspection.
Can I move my boiler without replacing it?
Sometimes, but it is often not worth it. Moving an older boiler costs nearly as much in labour as moving a new one, the old flue kit may not suit the new position, and the boiler may not have long left. If it is over ten years old, ask for prices to move it and to replace it.
Can a boiler go in a bedroom?
Modern room-sealed boilers can be fitted in bedrooms if the manufacturer allows it and the flue and clearances are right. Older open-flued boilers have restrictions on bedrooms and bathrooms. Approved Document J also expects a carbon monoxide alarm in the room when a new or replacement gas boiler is installed.
Does moving a boiler need Building Regulations approval?
Yes. Moving or replacing a gas boiler is notifiable under the Building Regulations. A Gas Safe registered installer can self-certify the work and notify it through the Gas Safe Register, and you should then receive a Building Regulations compliance certificate. Keep it with the commissioning checklist.
This answer is general information, not a substitute for an on-site assessment by a Gas Safe registered engineer. If you smell gas, call 0800 111 999.