Bristol · BS1 · Bristol
Quote online, pick your boiler and have a Gas Safe registered engineer install it at your Bristol home or flat – next-day fitting is often possible. Replacement gas boilers in Bristol cover combi swaps, system boilers for tall houses, back boiler removals and full heating upgrades.
Bristol has Georgian terraces in Clifton, tall Victorian villas in Redland and Cotham, and the coloured terraces of Bedminster and Southville. Across the BS postcodes we install Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann boilers.
Tall villas spread over several floors often need a Worcester Bosch or Viessmann system boiler with a cylinder to keep pressure at the top bathroom. Terraces in Bedminster and Southville are usually a combi conversion, where the Vaillant ecoFIT pure is a good fit. Clifton’s conservation areas need careful flue placement.
Boiler prices in Bristol depend on the building. A flat in a harbourside block, a Georgian terrace in Clifton and a family house in Horfield each need different boilers, and flue routes, listed building constraints, pipework and controls all move the figure. Like-for-like combi swaps start from £1,759 fitted, while Worcester Bosch Greenstar 4000 packages start from around £2,450. What you see online is what you’re charged. Extras are never slipped in at the end.
| Installation type | What’s involved | Price from | Time on site |
|---|---|---|---|
| Like-for-like combi swap | Replace an existing combi in the same position, with new flue, filter and controls | £1,759 | 1 day |
| Conventional or system to combi | Remove tanks and cylinder, cap off pipework, fit combi and upgrade gas supply if needed | £2,350 | 1–2 days |
| Back boiler replacement | Remove back boiler and fire, make good, fit new boiler in a new location | £2,795 | 2+ days |
| System boiler with cylinder | Suited to larger homes with multiple bathrooms; new or replacement unvented cylinder | £2,995 | 1–2 days |
| Boiler relocation | Move the boiler to a loft, garage or new room with new gas, flue and condensate runs | £2,250 | 1–2 days |
These are starting prices for a standard installation by a Gas Safe registered engineer; your online quote confirms the exact cost for your home.
Get a new boiler on finance in Bristol from £23.26 a month. As an example, a £1,799 boiler spread over 10 years at 9.9% APR works out at £23.26 per month. Shorter terms plus interest-free and buy now, pay later options are available, subject to status. See our boiler finance options for the full details.
Bristol’s housing is more period and more protected than most UK cities. These are the jobs we fit most.
We choose a discreet flue route and respect the building, flagging listed building consent before work starts.
A system boiler and unvented cylinder suit multi-storey houses with several bathrooms.
A compact combi saves space, with pressure and the flue exit checked first.
Local boiler installers
Bristol is built on hills, with Georgian terraces and crescents in Clifton, tall Victorian villas in Redland and Cotham, brightly coloured terraces in Bedminster and Southville, 1930s semis in Horfield and Knowle, and big post-war estates in the south. The harbourside has been rebuilt with apartments, and the city has a large number of period and listed buildings.
Steep sites, tall houses and listed status all affect boiler installation. When we price new boiler installation in Bristol we check the building’s age and status, the flue route and the hot water demand first, so the fixed price covers work that is allowed and fits the home.
With your boiler and installation date chosen online, a Gas Safe registered engineer arrives to remove the old unit, fit and commission the new one, register the warranty and notify Building Control, so everything is signed off before they leave.
Bristol is a city of steep streets, Georgian terraces and colourful Victorian rows. Here is what we see most.
Bristol’s water is hard in many areas, so scale builds up inside combi heat exchangers. Where hardness in your postcode is above 200ppm, we fit a scale reducer with a combi boiler.
Listed townhouses have strict controls on external work. We plan discreet flue routes and flag any listed building consent needed.
Four-storey houses need a boiler sized to many floors and several bathrooms. We fit a system boiler and cylinder to match.
Narrow terraces often have tight boiler spots and original pipework. We survey the system and fit a compact condensing boiler.
Hilly streets and tight parking affect install days. We plan access so the engineer can unload and work without delays.
Newer flats may have specified boilers and warranty conditions. We work within them and check flue routes against building rules.
Our Gas Safe engineers cover the whole city, from the city centre and Clifton to Bedminster, Redland, Horfield, Fishponds and Brislington. See all our service areas.
Red pin: Bristol town centre. Green pins: nearby towns we cover — tap a pin to see how far each town is from Bristol. The shaded circle shows roughly 8 miles around Bristol.
Other cities and towns we cover nearby include Cardiff (about 26 miles), Swansea (about 59 miles), Southampton (about 64 miles) and Plymouth (about 101 miles).
Often as soon as the next day, depending on the boiler you choose and engineer availability in the BS1 area. Complete the online quote, select a date that fits, and if there’s no heating or hot water we prioritise your booking.
All BS1 postcodes across Bristol, including Clifton, Redland, Bedminster, Horfield and Fishponds, plus nearby areas such as Kingswood, Filton and Keynsham. We are part of a nationwide network of Gas Safe engineers, so we can cover the wider area as well.
Bristol’s water is hard in many areas, usually above 200ppm. You can check your postcode on your supplier’s hardness checker. Where it exceeds 200ppm we fit a scale reducer with a combi boiler, as Building Regulations guidance advises.
Yes. We strip out the back boiler and fire, seal the old flue and pipework, and make everything safe before the new boiler goes in. After that, a modern combi or system boiler is fitted in a more convenient position. Allow a little longer than for a straight swap. Before work starts, we tell you how long it should take.
A boiler replacement is notifiable under Building Regulations, which your Gas Safe registered engineer handles, with a compliance certificate afterwards. Planning permission is not normally needed for a like-for-like swap, but in Clifton, Redland and Kingsdown there are conservation areas and many listed buildings, so check with Bristol City Council before moving a flue to a front-facing wall.
Yes. Boiler finance in Bristol includes interest-free, 9.9% APR and buy now, pay later options, with deposits from £0 – see our boiler finance page. All finance is subject to status.
Yes. Disposal is included: your old boiler, and any tanks or cylinder no longer needed after a combi conversion, are removed safely.
All boilers we install come with a manufacturer-backed warranty, typically between 5 and 10+ years depending on the model. Keeping it valid usually means an annual service – our boiler cover plans take care of that for you.
Yes. If there’s no mains gas at your property, we can fit an oil or LPG replacement. For oil we send an OFTEC registered engineer; for LPG, a Gas Safe registered engineer with LPG competence. See our oil boiler installation and replacement and LPG boiler installation and replacement pages for more detail.
Tell us about your home, see fixed-price replacement boiler packages for Bristol and book the installation date that suits you – all online, in a few minutes.