Boiler Installation in Wales from £1,979 inc. VAT
Upgrade your heating without the regional mark-ups. Built for Welsh homes and installed by local Gas Safe engineers, WarmZilla delivers A-rated, energy-efficient boilers across Wales. From damp coastal climates to isolated off-gas properties, we offer fair, fixed prices with no hidden extras.
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Heating Welsh Homes, Without the Hassle.
Founded by Engineers, Built for Real Homes. Getting a reliable heating engineer in Wales shouldn't be a lottery.
Matthew Powell
Founder & Gas Safe Engineer"WarmZilla was created to give homeowners a safer, fairer alternative to overpriced national companies and inconsistent local installers. Every engineer we send to homes across Wales is personally vetted to meet our WarmZilla Standard – technically excellent, tidy, and dependable."
Local Welsh Installation Teams
Covering South Wales, Mid Wales, and North Wales. We offer next-day installation in major population centres when booked early.
Strictly Gas Safe
Never compromise on gas safety. Founded and run by Gas Safe engineers, every installation in Wales is completed by rigorously vetted professionals.
Zero Hidden Rural Fees
Boiler installation prices in Wales can vary significantly. Forget regional mark-ups. Our fixed online quotes include the boiler, flue, filter, and installation.
Your Boiler Installed in 3 Easy Stages
Step one
Click
Tell us about your Welsh property - whether it's a Victorian terrace in Cardiff or a cottage in Gwynedd - to generate an accurate, fixed-price quote.
Step two
Pick
Pick a boiler from top brands like Worcester Bosch, choose to pay outright or apply for 0% finance, and pick an installation date.
Step three
We Fit
Our local Gas Safe engineer will arrive on time, fit your new heating system with minimal disruption, and safely dispose of your old unit.
Don't Overpay for a Boiler Installation in Wales
Large national energy companies often charge £2,600–£3,000+ for a standard boiler replacement. WarmZilla installs the exact same premium boilers by local Gas Safe engineers at a clear, fixed price.
| Feature | WarmZilla (Fixed Price) | Local Independent | Large Energy Providers |
|---|---|---|---|
| Punctuality | 98% On-Time | Unpredictable | Reliable |
| Unexpected Fees | £0 (All Included) | Travel/Parking Added | Often Added Later |
| Emissions Standards | Ultra-Low NOx Ready | Varies Wildly | Compliant |
| Safety Standards | Gas Safe Certified | Must Verify Yourself | Certified |
| Average Cost | From £1,979 Fully Fitted | £1,900 - £2,500 (Quality Varies) | £2,800 - £4,000+ (Brand Premium) |
Don't Just Take Our Word For It: See Why Welsh Homeowners Trust WarmZilla!
Partner of CompareTheMarket & MoneySuperMarket
Rated Excellent on Truspilot
Trusted Partner of Checkatrade
Trusted by Homeowners Across Wales
"Living in a stone cottage in the valleys, I was worried about access and getting a reliable installer out to us. WarmZilla delivered an amazing Worcester Bosch Greenstar with zero hidden travel fees."
Gareth M."the fella come quick and did a bangin job putting the new boiler in my terrace house. was really friendly an cleaned up all the rubbish. would defo use em again if i needs to."
"Quoted a price online and its exactly what I payed for our home in Swansea, witch beat the other local companys we looked at. Its refreshing not to deal with salespeople. The new combi is working perfectly."
Rhys T.What You Need to Know About Boilers in Wales
Mixed Housing Stock
The Issue: Wales has a broad mix of housing, from Victorian and Edwardian terraces in the cities to stone-built rural cottages and modern estates.
The Fix: These varying properties require careful boiler sizing and system checks. WarmZilla engineers evaluate your heat loss needs to ensure you get a reliable system.
Rural Isolation & Grants
The Issue: High off-gas reliance in the valleys and mid-Wales means traditional natural gas isn't an option for everyone, and upgrading can be costly.
The Fix: We offer specialized LPG solutions. Furthermore, eligible homeowners can explore local Welsh funding, such as the Nest or 0% loans via Green Homes Wales.
Boiler Installation Areas in Wales
South Wales
Cardiff, Swansea, Newport, Bridgend, Merthyr Tydfil, Caerphilly, Neath, Llanelli and surrounding areas.
North Wales
Wrexham, Bangor, Llandudno, Rhyl, Flintshire, Gwynedd and Anglesey.
Mid & West Wales
Powys, Ceredigion, Pembrokeshire, and Carmarthenshire.
FAQ's
Boiler installation in Wales typically starts from £1,979 with WarmZilla. This fixed price includes the boiler, flue, system filter, and installation by a Gas Safe engineer. Final pricing depends on property size and boiler type.
Yes. Next-day boiler installation is often available in major Welsh cities such as Cardiff, Swansea and Newport when booked early. Rural installations may require additional scheduling, which is confirmed upfront.
Yes. All WarmZilla boiler installations in Wales are completed by fully Gas Safe registered engineers, with Building Regulations compliance and certification included as standard.
Most homes are well-suited to combi boilers, but larger or older properties (like rural farmhouses or multi-bathroom townhouses) often benefit from a system boiler. Our engineers assess your home before recommending the right option.
Most boiler installations are completed within one working day. More complex upgrades, such as converting from a system to a combi boiler, may take slightly longer and will be confirmed in advance.
Our Local Hub in Wales
WarmZilla Cardiff
4.8 (2,000+ reviews)
Our local engineering team operates from this hub, ensuring rapid response times across Cardiff & Swansea, and the wider North & South Wales Regions.
Capital Tower,
Greyfriars Rd,
Cardiff, CF10 3AG
Mon - Fri: 8am - 6pm