Jennings Plumbing and Heating LTD are professional and reliable gas safe engineers with over 10 years experience. We cover the whole of London and ...

New combi boilers cost from around £650 to £2,500 depending on the manufacturer and kW output.
Comparing HP16 heating engineers estimates for combi or system boiler upgrade gives you a good idea of prices but the best way to compare costs is to get quotes.
What to do - Get boiler installation quotes by posting your job on HaMuch and we will send it to your local heating engineers in HP16.
*Prices are estimates based on the hourly or day rate of heating engineers in HP16, UK boiler offers and materials.
"New boiler installation (reliable brand such as Vaillant, Alpha, Veissmann), 30 kw to replace an existing combi boiler. Quote for supply of boiler, full installation including flue cementing (boiler is in loft space mounted on an outside wall)." - HP13, job posted 05/10/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install A New Boiler near Hazlemere | £68 | £382 |
| Install A New Boiler near Chesham | £70 | £362 |
| Install A New Boiler near Wycombe | £68 | £384 |
| Install A New Boiler near High Wycombe | £67 | £374 |
| Install A New Boiler near Berkhamsted | £66 | £349 |
| Install A New Boiler near Aylesbury | £70 | £358 |
| Install A New Boiler near Dacorum | £66 | £344 |
| Install A New Boiler near Gerrards Cross | £69 | £367 |
| Install A New Boiler near Hemel Hempstead | £65 | £344 |
| Install A New Boiler near Rickmansworth | £68 | £351 |
With energy prices rising, it’s important to do all you can to keep your bills as low as possible. And if you’ve got an old boiler, it could be wasting your money. But how much will it set you back to replace your boiler? We’ve got the answer plus costs for other heating sources like ground and air source heat pumps in our cost guides.

Fit underfloor heating - £1,138

Service a gas fire - £174

Replace a heating programmer - £213

Powerflush - £509 Visit

Heating oil tank installation - £1,215

Replace an oil boiler - £2,508

Install a new boiler - £1,528

Install heated skirting boards - £1,310

LPG boiler installation - £1,446

Install hydrogen boiler - £1,220

Install gas fire - £764

Install chimney liner - £491

Install biomass boiler - £5,215

Install a ground source heat pump - £14,388

Fix a boiler fault code - £116

Fit smart heating controls - £251

Fit a magnetic filter - £158

Fit a radiator - £180

Connect a gas cooker or hob - £186

Boiler service - £88

Boiler repair - £136

Boiler Insurance - £126 per month

Install an air source heat pump - £6,227