Hillingdon · UB8 · Greater London
Choose a new boiler online at a fixed price and a Gas Safe registered engineer will fit it at your Hillingdon home, often from the very next day. Replacement gas boilers in Hillingdon cover combi swaps, system boilers, back boiler removals and full heating upgrades with finance available.
Hillingdon is London’s second-largest borough, with Metroland semis in Ruislip and Eastcote, flats in Uxbridge and Hayes, and larger homes in Northwood. We install Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann boilers throughout.
Metroland semis are usually a combi swap, with the Worcester Bosch Greenstar 4000 and Ideal Logic Max both popular. Flats in Uxbridge and Hayes need compact units with careful flue planning. Bigger houses in Northwood with several bathrooms tend to suit a Vaillant or Viessmann system boiler and unvented cylinder.
Boiler prices in Hillingdon depend on the style of home. A Metroland semi in Ruislip, a flat in Uxbridge and a cottage in Harefield each need a different boiler, and flue length, pipework and controls all affect the final figure. Like-for-like combi swaps start from £1,759 fitted, while Worcester Bosch Greenstar 4000 packages start from around £2,450. Your quote is locked in once you’ve chosen your boiler. You won’t be asked for more money after installation.
| Installation type | What’s involved | Price from | Time on site |
|---|---|---|---|
| Like-for-like combi swap | Replace an existing combi in the same position, with new flue, filter and controls | £1,759 | 1 day |
| Conventional or system to combi | Remove tanks and cylinder, cap off pipework, fit combi and upgrade gas supply if needed | £2,350 | 1–2 days |
| Back boiler replacement | Remove back boiler and fire, make good, fit new boiler in a new location | £2,795 | 2+ days |
| System boiler with cylinder | Suited to larger homes with multiple bathrooms; new or replacement unvented cylinder | £2,995 | 1–2 days |
| Boiler relocation | Move the boiler to a loft, garage or new room with new gas, flue and condensate runs | £2,250 | 1–2 days |
These are starting prices for a standard installation by a Gas Safe registered engineer; your online quote confirms the exact cost for your home.
Get a new boiler on finance in Hillingdon from £23.26 a month. As an example, a £1,799 boiler spread over 10 years at 9.9% APR works out at £23.26 per month. You can also choose a shorter term, interest-free, or buy now, pay later – all subject to status. See our boiler finance options for the full details.
Hillingdon’s housing sits between London suburbs and the green belt. These are the jobs we fit most.
A like-for-like swap with a new filter and controls usually delivers the best value in these roomy interwar homes.
A compact combi saves space. We check the flue exit and lease rules before recommending one.
These can need a system boiler or bespoke pipework. We survey first so the fixed quote covers everything required.
Local boiler installers
Hillingdon is London’s western edge, where Uxbridge’s busy centre and the flats around Hayes give way to the tree-lined Metroland streets of Ruislip, Eastcote and Northwood and the green-belt village of Harefield. Heathrow sits on the southern boundary and the Grand Union Canal runs through the south, so the housing mix is wider than most outer boroughs.
Most Hillingdon homes are inter-war and post-war family houses with decent space, but pockets of flats and older cottages need a different approach. When we price new boiler installation service in Hillingdon we check the property, the flue and the hot water demand, then give you a fixed price.
Pick your boiler and installation day online and your Gas Safe registered engineer removes and disposes of the old boiler, fits and commissions the new one, registers the warranty and notifies Building Control before they leave.
Hillingdon has Metroland semis in Ruislip, canal-side flats in Uxbridge and green-belt villages in the north. This is what we see most.
Hillingdon water is very hard, so scale is a constant threat to combi heat exchangers. If your postcode shows hardness over 200ppm, a scale reducer goes in alongside a combi.
Interwar semis with roomy cupboards usually suit a combi swap. We check mains pressure first and add a filter and modern controls.
Town-centre and canal-side flats need compact combis and carefully planned flues. We check building rules and ventilation first.
Bigger houses in Northwood often have several bathrooms, so we size a system boiler and cylinder to keep hot water strong.
Older homes in Harefield and Ickenham can have unusual pipework. We survey before quoting so there are no surprises on the day.
Busy approach roads can affect arrival times. We plan access and parking so installs start on schedule.
Our Gas Safe engineers cover the whole borough, from Uxbridge and Hayes to Ruislip, Northwood and Harefield. See all our service areas.
Red pin: Hillingdon town centre. Green pins: nearby towns we cover — tap a pin to see how far each town is from Hillingdon. The shaded circle shows roughly 8 miles around Hillingdon.
We also cover London as a whole, plus neighbouring Harrow (about 6 miles), Hounslow (about 7 miles) and Ealing (about 8 miles).
Often as soon as the next day, depending on the boiler you choose and engineer availability in the UB8 area. Complete the online quote, then choose a date; if you’re without heating or hot water, we move your booking up.
All UB8 postcodes plus UB3, UB4, UB7, UB9, UB10, HA4 and HA6, including Uxbridge, Ruislip, Northwood, Harefield and Hayes, and nearby areas such as Harrow, Ealing and Rickmansworth. Being part of a nationwide network of Gas Safe engineers means we also cover the surrounding area.
Hillingdon tap water is very hard, usually well above 200ppm. You can check your postcode on your supplier’s hardness checker. Where it is over 200ppm, we fit a scale reducer with a combi boiler, in line with Building Regulations guidance.
Yes. Replacing a back boiler involves taking out the old unit and fireplace, then tidying away the redundant flue and pipes. Then we fit the new condensing combi or system boiler away from the old fireplace, where it’s easier to live with. These installs take more time than a like-for-like change. Expect a clear timescale before we begin.
A boiler replacement is notifiable work under Building Regulations, which your Gas Safe registered engineer handles, with a compliance certificate to follow. Planning permission is not normally needed for a like-for-like swap, though around Ruislip Village, Harefield or Eastcote, check with Hillingdon Council first if a new flue would be visible from the road.
Yes. Boiler finance in Hillingdon includes interest-free, 9.9% APR and buy now, pay later options, with deposits from £0 – see our boiler finance page. All finance is subject to status.
Yes. Your engineer will disconnect and remove the old boiler and dispose of it, and clear any redundant tanks or cylinder if you’re changing to a combi.
All boilers we install come with a manufacturer-backed warranty, typically between 5 and 10+ years depending on the model. Keeping it valid usually means an annual service – our boiler cover plans take care of that for you.
Yes. Properties without mains gas can still get a new boiler – we replace oil and LPG systems. Oil boilers: OFTEC registered engineer. LPG boilers: Gas Safe registered engineer with LPG competence. See our oil boiler installation and replacement and LPG boiler installation and replacement pages for more detail.
Tell us about your home, see fixed-price replacement boiler packages for Hillingdon and book the installation date that suits you – all online, in a few minutes.