Boiler Installation
Fixed-price boiler installation across Newport, Cardiff and South Wales. ATAG, Vaillant, Glow-worm and Baxi Main, fitted by our own Gas Safe engineers with up to 18-year guarantees.
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
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
- 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
- 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
- Baxi Main ecoCompact 25 combi boiler
- Standard flue and fittings
- System chemical flush
- Magnetic system filter
Vaillantfrom £3,299
system boiler · 10-yr guarantee
- 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
- 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. No stock photos.
