New boiler quotes in Swansea.
Three quotes from Gas Safe registered engineers who actually cover your postcode, not a call centre eighty miles away.
- Covering SA1, SA2, SA3, SA4, SA5, SA6, SA7 and the wider West Glamorgan
- Your job reaches them in about 60 seconds
- Three engineers maximum, then it closes
- Every one checked on the Gas Safe Register
Get three Swansea quotes.
- Three quotes from Gas Safe engineers in your postcode
- Compare prices and opinions before you commit
- A maximum of three, then it closes
- Free to you, and no obligation
Engineers covering Swansea.
Every one checked on the Gas Safe Register before they join.
- Gas Safe registration number verified against the public register
- A registered business with a real address, not a mobile and a van
- Coverage confirmed for the postcode areas they say they work in
- We ask homeowners how the job went, and act on the answer
You can check any engineer's registration yourself at gassaferegister.co.uk before work begins. Ask to see the card. Any decent engineer expects you to.
What a boiler swap usually looks like in Swansea.
Semis are the largest group in Swansea at 34.5 per cent of households in the 2021 Census, followed by terraces at 25.4 per cent and detached homes at 24.0 per cent, with purpose-built flats at 12.6 per cent and converted houses at just 2.1 per cent. Terraces climb the hillsides of Mount Pleasant, Brynmill, St Thomas, Hafod and Morriston, while Townhill and Mayhill are the council's 1920s garden-suburb estate, part of around 4,000 council homes built between the wars. Semis and detached houses spread west through Sketty, Killay and Mumbles and north through Fforestfach and Llansamlet, and the SA1 waterfront supplies most of the purpose-built flats.
Hillside terraces in Mount Pleasant and Brynmill often have the boiler in a rear kitchen below street level at the front, so the flue goes out the back and the condensate may need a pump to reach a drain. The 1920s Townhill houses were built without central heating and retrofitted over the decades, so the pipework is a mix of ages and a system flush and magnetic filter are essential before a new combi goes in. In the Sketty and Killay semis a heat-only boiler and cylinder are still common and cylinder-to-combi conversion is the frequent choice, while SA1 flats have flue positions fixed by the block.
We deliberately don't put a figure on this page, because nobody can price a boiler from a postcode. The cost calculator will give you a realistic range for a property like yours in under a minute, and three quotes for your actual job give you the real answer.
Getting three quotes matters more on a conversion
On a straight replacement the prices tend to cluster. On a cylinder-to-combi conversion they do not: how the engineer plans to route the pipework, whether a system flush is included and what happens to the cupboard afterwards can each move the number by hundreds. Three quotes is not about haggling. It is about seeing three different opinions on how the work should be done.
Whoever you go with must be Gas Safe registered. It is against the law for anyone else to work on your gas boiler, and you can check any engineer's registration number yourself before they start.
Finding a boiler engineer in Swansea
Our engineers cover SA1, SA2, SA3, SA4, SA5, SA6, SA7 and the wider West Glamorgan area, and those codes are examples rather than a limit. Rather than ringing round yourself, you fill in one form and we pass it to up to three Gas Safe registered engineers who work in your postcode. They contact you, they quote, and you decide.
Ask all three the same questions
Is the price fixed or an estimate? Does it include a power flush or just a chemical clean? Is a magnetic filter included, since most manufacturer warranties require one? Who notifies building control? A good engineer in Swansea will not mind being asked, and one who bristles has told you something useful.
Water and heating in Swansea
Welsh Water supplies Swansea from upland reservoir sources and explains that water from those sources carries little dissolved calcium or magnesium, so it is soft. Scale is not a concern for a boiler here; system sludge from old radiators is, which makes a magnetic filter and inhibitor the standard protection rather than a scale reducer.
Planning, flats and the edges of Swansea
Swansea Council has 31 conservation areas, and those with adopted planning guidance are Mumbles, Morriston and Ffynone and Uplands, so a flue terminal on a street-facing wall there may need consent and the council recommends a pre-application check. Purpose-built flats are mostly newer waterfront blocks rather than tower estates. Building control is provided by Swansea Council, and the Gower villages in SA3 and SA4 beyond Mumbles and Gowerton include many homes off the gas grid on oil or LPG.
Areas of Swansea this covers
Uplands, Sketty, Mumbles, Morriston, Townhill, St Thomas, Brynmill, Killay, Fforestfach and Llansamlet, and everywhere else in SA1, SA2, SA3, SA4, SA5, SA6, SA7. The districts are Swansea itself; a job just outside them still reaches engineers who cover that postcode.
Also covering the area.
Swansea questions.
My terrace in Mount Pleasant has the kitchen at the back below street level. Where does the condensate go?
A condensing boiler produces a steady trickle of acidic water that has to reach a drain, and on the steep streets of Mount Pleasant and Brynmill the kitchen drain can be above the boiler or on the far side of the house. Where a gravity run is not possible, the engineer fits a small condensate pump that lifts the water to a drain or soil pipe. The pipe should run inside where it can, because an external condensate pipe can freeze and shut the boiler down.
Do I need a scale reducer with Swansea's water?
No. Welsh Water's supply to Swansea comes from upland reservoirs and picks up very little calcium, so it is soft and does not lay down limescale in a combi's heat exchanger. The protection a Swansea boiler needs is against sludge, the black iron oxide that forms in older radiators and collects in the new boiler. A proper flush, a magnetic filter on the return and chemical inhibitor deal with that, and most manufacturers make them a condition of the warranty.
What does a new boiler cost in Swansea?
It depends far more on the job than the town. A straight combi-for-combi swap sits at the bottom of the range; a cylinder-to-combi conversion sits well above it, and only an engineer standing in your house can see which one you have. The cost calculator gives you a realistic range in under a minute, and comparing 3 quotes for your actual job gives you the real answer.
Which postcodes in Swansea do you cover?
Swansea is SA1, SA2, SA3, SA4, SA5, SA6, SA7, and we match on the outward code, so a job in SA1 only goes to engineers who have told us they cover SA1. Those districts are the town itself rather than a service boundary. If your postcode isn't listed, enter it anyway: we place jobs across the UK, not only in the towns we have a page for.
How quickly can someone come out in Swansea?
Your job reaches engineers covering SA postcodes within about a minute of you submitting it. How soon one of them can actually fit a boiler depends on their diary and on the job, so we don't promise a date we don't control. If your boiler has failed completely, say so on the form and it is flagged as urgent.
Are your Swansea engineers Gas Safe registered?
Yes. Every engineer on our network is on the Gas Safe Register and we check the number against the public register before any job is sent to them. It is illegal for anyone else to work on your gas boiler. Ask to see their ID card and check it yourself at gassaferegister.co.uk before work starts.
Do you own the property in Swansea?
This is the one thing we have to know before anything else. A boiler replacement is a permanent change to the property, so it has to be authorised by whoever owns it - which means we can only arrange quotes for the homeowner, or for someone acting on the owner's behalf. Landlords are welcome to use the form for a property they let. If you answer no, we stop there rather than pass your details to an engineer who would not be able to take the job.
Three Swansea quotes, thirty seconds.
Free, no obligation, and only three engineers ever get your details.