Hillingdon · UB8 · Greater London
Get a fixed-price quote for a new boiler online and have a Gas Safe registered engineer fit it at your Hillingdon home – often as soon as the next day. Replacement gas boilers in Hillingdon cover combi swaps, system boilers, back boiler removals and full heating upgrades with finance available.
Worcester Bosch Greenstar 4000
Ideal Logic MAX Combi C30
Vaillant EcoFit Pure 830C 30kW
Baxi 830 Combi 2 30kW
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. Every quote you get online is fixed – no surprise extras on the day.
| 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. Shorter terms, interest-free and buy now, pay later options are also available, 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.
Fill out our simple online enquiry form. We just need a few details about your home to give you quotes for new boilers online.
Select a gas boiler package that fits your specific needs. You have the option to pay up-front, or with instalments on finance.
Next you will be able to choose a convenient boiler installation date. One of our Gas Safe engineers will complete installation of your new boiler.
You can choose from one of our boiler servicing plans, giving you peace of mind and keeping your boiler running smoothly for years to come.
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. We check your postcode and fit a scale reducer where hardness is above 200ppm.
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 7 miles), Ealing (about 9 miles) and Barnet (about 16 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, pick a date that suits you, and if you have no heating or hot water we prioritise your booking.
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. As part of a nationwide network of Gas Safe engineers, we also cover the wider 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. We remove the back boiler and associated fire, make the old flue and pipework safe, and install a modern condensing combi or system boiler in a more suitable position. This usually takes a little longer than a straight swap, and we’ll confirm the timescale before we start.
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 safely disconnect, remove and dispose of your old boiler, and any redundant tanks or cylinder if you’re switching 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. If your home is off the mains gas network, we can replace an oil or LPG boiler. Oil boilers are fitted by OFTEC registered engineers and LPG boilers by Gas Safe registered engineers 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.