Looking for reliable boiler installation in Cardiff (Caerdydd)? EazyHeat fits and replaces gas boilers across the city, from Victorian terraces in CF24 Roath and Cathays to the family semis of CF14 Whitchurch and Rhiwbina and the new-build estates around CF3 St Mellons. Whether your old back boiler in a Grangetown terrace has finally given up, or you need a straight combi swap in a Pontcanna townhouse, get a clear online quote for boiler replacement in Cardiff and book an installation date that works for you.
Cardiff’s housing stock is genuinely mixed, and that shapes what “the right boiler” actually looks like street by street. In the dense Victorian and Edwardian terraces of CF24 (Roath, Cathays, Splott) and CF11 (Canton, Grangetown), many homes still run on ageing back boilers or undersized combis that struggle once a loft conversion or extra bathroom is added.
EazyHeat’s engineers regularly requalify these properties for a correctly sized combi or, where cylinder space allows, a system boiler that copes with higher demand. Out towards CF14 (Whitchurch, Llandaff North, Heath, Rhiwbina) and CF23 (Llanishen, Cyncoed, Pentwyn), the 1930s-to-1970s semis and detached homes often have the loft space for a regular boiler and tank setup, though most owners now prefer converting to a combi to free up that space.
Newer estates around CF3 St Mellons, Old St Mellons and Pontprennau typically already have a modern combi installed during construction, so replacements here are usually straightforward like-for-like swaps. Wherever you’re based in Cardiff, our installers assess your pipework, hot water usage and property type before recommending a boiler, rather than fitting whatever’s easiest.
Our nationwide installation network makes replacement straightforward from the first quote to the final handover. An accredited engineer will fit and commission your new boiler, explain the controls and leave your home clean and tidy.
Many of the boiler call-outs we get from homes near Roath Park, Cathays and Albany Road are for units well past 12 to 15 years old, still running on outdated controls and losing efficiency every winter. In older Cardiff terraces built before modern insulation standards, a tired boiler has to work harder just to heat the same rooms, which shows up directly on gas bills through the colder months.
Replacing an ageing boiler in a Cardiff home also solves problems that are common to this housing stock specifically: weak water pressure in upstairs bathrooms of three-storey Grangetown and Riverside terraces, noisy airing cupboard cylinders in Whitchurch and Rhiwbina semis, and back boilers hidden behind fireplaces in Splott and Adamsdown properties that are increasingly difficult to source parts for.
A new, correctly sized boiler resolves these issues while adding smart thermostat control and a manufacturer warranty, giving Cardiff homeowners fewer breakdowns during the colder months coming off the Bristol Channel.
Browse our most popular boiler installation packages, selected to suit different property sizes, hot-water requirements and budgets in Cardiff.
Ideal Logic Max Combi2 C30 Boiler
Glow-worm Compact 28C Combi Boiler
Worcester 4000 Combi Boiler
We provide home energy installations nationwide, helping families across the UK upgrade their heating and energy systems. With next-day installation slots often available, getting started couldn’t be easier.
We have major hubs in Wales, London and the Midlands. Our accredited engineers deliver a fast, reliable service wherever you live. You can get a quote online today using our streamlined system, and we’ll match you with an engineer in your local area.
Across Cardiff, a straightforward like-for-like combi boiler replacement typically costs between £1,800 and £3,500 fully installed, depending on the brand and output size. This covers most terraced homes in CF24, CF11 and CF5 where the new boiler goes back in roughly the same spot as the old one, with minimal extra pipework needed.
For a system or regular boiler replacement, which is more common in the larger semis and detached homes of CF14 Whitchurch, CF23 Cyncoed and Lisvane, expect to pay in the region of £2,200 to £4,000, particularly where an ageing cylinder or loft tank also needs upgrading.
If you’re relocating the boiler entirely, converting from a regular system to a combi, or dealing with a period property near Pontcanna or Canton where pipework is harder to access, costs typically rise to £3,000 to £5,000.
EazyHeat provides a fixed, itemised quote before any work begins, so Cardiff homeowners know the exact cost for their specific property before booking an installation date.
When it comes to replacing an existing gas boiler, you have several options depending on your home, lifestyle, and budget in Cardiff.
Ideal for: Flats, apartments, and small to medium homes in areas like Roath and Canton.
Ideal for: Families with multiple bathrooms in Rhiwbina and higher daily hot water use.
Ideal for: Larger detached homes already configured for a regular boiler, or high hot water needs.
Choose from a range of convenient payment options, including flexible finance plans or paying for your installation in full.
Representative APR 11.9% (fixed)
Spread the cost of your installation over a longer repayment term with manageable monthly payments.
As long as your scheduled monthly payments are maintained, you can make additional payments at any time. Overpayments may help reduce the total interest charged and shorten the length of the agreement.
You will also receive the additional protections provided by the Consumer Credit Act 1974.
Representative example: Cash price £2,000. No deposit required. Total amount of credit £2,000. Interest rate 11.9% per annum fixed. Representative APR 11.9%. Agreement term 60 months. 60 monthly payments of £43.78. Total amount repayable £2,627.08.
Pay for your installation in full
Choose from several convenient ways to pay for your installation:
We act as an introducer appointed representative of Vendigo, we’ll never quote you real time rates. We’ll simply send you a link to apply for finance from them.
EAZY HEAT LTD (FRN: 1020736)] is an Appointed Representative of Koze Group Ltd, a credit broker, not a lender. Koze Group Ltd is authorised and regulated by the Financial Conduct Authority (FRN 811281) and registered in England (08357963). We offer finance products from a panel of lenders. Credit is subject to age and status.
At EazyHeat, we don’t just install systems. We provide a complete, customer-focused experience that puts speed, simplicity, and service first. Homeowners across the UK choose us for:
Choose your install date, and we’ll do the rest. No drawn-out processes or unnecessary delays.
All boiler installations come with a market-leading 12-year parts and labour warranty.
We’re proud of our reputation. From initial quote to final handover, we deliver consistently top-rated service across the UK. That’s why we’re rated Excellent on Trustpilot!
Every job is carried out to the highest safety standards by our fully qualified, experienced engineers.
No matter where you’re based, we’ve got expert installers ready to help – from major cities to rural towns.
“Needed to upgrade my very old gravity-fed boiler system with a new direct mains. Once I received the online quote the follow up with Craig was really helpful in choosing the right boiler – we went for the Weismann. The install team were great, did the job in a day including removal of the water tanks, were a good laugh, and left little to no mess.”
“Excellent service from EazyHeat from start to finish. Craig, the salesman, was professional, friendly, and explained everything clearly without any pressure. The installation engineers, Matt and Joe, were punctual, tidy, and completed the work to a very high standard. They took the time to explain how everything works and made sure we were happy before leaving.”
“Flawless job from Shaun and Callum, they were so incredibly professional and very clean throughout the installation. The job was done to a very high standard; they clearly take pride in their work. Cheers fellas! Without a doubt would recommend EazyHeat, and will use them again if needed.”
“Joe from Eazyheat went the extra mile with my install and performed a full system flush, even popping back to ensure the flush was effective.”
Hi folks, I had a boiler change today from a system boiler to a combi, the engineer that came (Joe) was superb, extremely pleasant, massively helpful extremely clean and tidy, and took up most care throughout and was very professional. I would without a doubt recommend EazyHeat going forward ,and look forward to dealing with them again soon
Yes. Many pre-1919 terraces in CF24 still have a back boiler hidden behind a fireplace or in an airing cupboard. Removing one involves capping the old flue, making good the chimney breast and running a new balanced flue to an external wall, which our engineers factor into your quote during the home survey.
Yes, though flats above commercial units in CF23 and CF24 sometimes have shared freeholds or restricted flue positions due to neighbouring windows and party walls. We check building regulations Part J flue clearance distances and, where needed, coordinate timing with the ground-floor business to minimise disruption.
Flue positioning in most cases falls under permitted development, but homes within the Pontcanna, Cathays or Conservation Area boundaries near Cathedral Road sometimes have additional restrictions on external fittings. Our engineers check with Cardiff Council’s planning guidance where a property is listed or within a designated conservation area before finalising flue placement.
A straightforward combi replacement in a CF14 or CF23 semi usually takes around 4 to 6 hours. If you’re upgrading from a regular boiler and removing a loft tank and airing cupboard cylinder, the job typically takes a full day, sometimes running into a second morning to complete testing and commissioning.
Some Cardiff households may qualify for support under the UK Government’s Boiler Upgrade Scheme or ECO4 scheme, depending on income, benefits status and EPC rating of the property. Our team can advise during your quote whether your Cardiff property is likely to meet eligibility criteria for any current scheme.
In addition to Cardiff itself, our engineers regularly carry out boiler installations in nearby Penarth, Barry and Dinas Powys, along with surrounding villages across the Vale of Glamorgan. If you’re just outside the city boundary, get in touch to confirm coverage for your postcode.
For personal guidance about your property or installation, call EazyHeat on 0330 133 5170.
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