Boiler Installation
Fixed-price boiler installation from £2,499 in Newport, Cardiff and South Wales, fitted by our own Gas Safe engineers with up to 18-year ATAG guarantees.
Finance option available
Gareth Williams Heating installs new combi, system and regular boilers from £2,499 including VAT, flue, flush, filter, thermostat and a guarantee of up to 18 years on ATAG boilers, fitted by our Gas Safe registered engineers.
What's included
- Free written fixed-price quotation, with no hidden fuel supplements
- Accredited installers for ATAG, Vaillant and Glow-worm, and we fit Baxi Main
- Combi, system and regular boiler installations
- Standard flue, fittings, system flush and magnetic filter included
- Up to 18 years parts and labour guarantee on ATAG boilers
- Installed by our own named Gas Safe registered engineers
- Happy to fit another brand if you would rather have one
Registered No. 233679Verify on the register →- ATAG Installer
- Vaillant Advance Installer
- Glow-worm Installer
- Baxi Main
Every job is carried out by our Gas Safe registered engineers, installing and servicing boilers in Newport, Cardiff, Cwmbran and across South Wales since 2007.
What happens when you book
Free fixed-price quotation
You get a written fixed price for your new boiler, with no hidden fuel supplements, before you commit to anything.
Choose your boiler
Combi, system or regular: we're accredited installers for ATAG, Vaillant and Glow-worm, and fit Baxi Main, or another brand if you'd rather.
Installation
Our own named Gas Safe registered engineers fit the boiler, standard flue and fittings, a full system flush and a magnetic filter.
Test and hand over
The new boiler and wireless thermostat are tested and commissioned, with your guarantee of up to 18 years on ATAG boilers in place, and talked through with you before we finish.
Which boiler suits your home?
Combi, system or regular: the right choice comes down to how many bathrooms you have and how your home is plumbed. Pick a type to see how it works, who it suits and a fixed price.
Combi vs system vs regular
A quick side-by-side. Not sure which is right? Our full guide walks through it in plain English.
| Feature | Combi | System | Regular |
|---|---|---|---|
| How it heats water | On demand, straight from the mains | Heats and stores water in a cylinder | Heats a cylinder, fed from loft tanks |
| Hot water to taps | One outlet at a time; flow drops if two run together | Several outlets at once at good pressure | Several outlets at once, gravity or pump assisted |
| Hot water cylinder | No | Yes | Yes |
| Loft tanks | No | No, sealed system | Yes: cold-water & feed/expansion |
| Best for | Flats and homes with one bathroom | Homes with two or more bathrooms | Larger or older homes on a traditional system |
| Fixed price | from £2,499 | from £3,299 | from £2,999 |
Published prices, VAT included
Every figure includes VAT, the flush, the filter, a thermostat and the guarantee. No form to fill in to see a price, and no fuel supplement on the day.
ATAGfrom £2,999
combi boiler · 18-yr guarantee10.1 L/min hot water at a 35°C rise
Finance option available
- ATAG iC 24 combi boiler
- Standard flue and fittings
- System chemical flush
- Fernox TF1 Omega magnetic filter
Vaillantfrom £2,899
combi boiler · 10-yr guarantee10.6 L/min hot water at a 35°C rise
Finance option available
- Vaillant ecoTEC Plus 826 combi boiler
- Standard flue and fittings
- System chemical flush
- Vaillant Boiler Protection Kit
Baxi Mainfrom £2,499
combi boiler · 5-yr guarantee10.2 L/min hot water at a 35°C rise
Finance option available
- Baxi Main ecoCompact 25 combi boiler
- Standard flue and fittings
- System chemical flush
- Magnetic system filter
Vaillantfrom £3,299
system boiler · 10-yr guarantee
Finance option available
- Vaillant ecoTEC Plus 625 system boiler
- Standard flue and fittings
- System chemical flush
- Vaillant Boiler Protection Kit
Baxifrom £2,999
regular boiler · 5-yr guarantee
Finance option available
- Baxi 415 heat-only boiler
- Existing hot water cylinder and loft tanks retained
- Standard flue and fittings
- System chemical flush
Fixed price applies to standard swaps meeting a few clear conditions. Non-standard homes get an honest survey, never a wrong price.
Real boiler installation work
Genuine jobs across Newport, Cardiff and South Wales.
Boiler Installation: common questions
- How much does a new boiler cost in Newport?
- Our published packages run from £2,499 to £3,299 including VAT. The headline price covers the boiler, a standard flue and fittings, a full system chemical flush, a magnetic filter and a wireless thermostat, so there is no mandatory cost left to add later. Anything genuinely optional, such as moving the boiler to a new location, is listed and priced separately.
- What guarantee comes with a new boiler?
- Up to 18 years parts and labour on ATAG, which is the longest term we can substantiate. It is conditional: it applies with the Tado control, Fernox TF1 Omega filter and water treatment pack we fit as standard, and it requires an annual service. Vaillant is 5 years as standard and 10 with the Boiler Protection Kit registered through myREWARDS.
- Which boiler brands do you install?
- We are accredited installers for ATAG, Vaillant and Glow-worm, and we fit Baxi Main. If you would rather have a different brand, we are happy to fit that instead.
- Do you charge extra to travel to my area?
- No fuel supplement applies anywhere in Newport, and none in the rest of our local zone. Where travel genuinely costs something, it is shown in your written quote before you commit, never added on the day.