Range from the cheapest new boiler installation £872 (CJ Plumbing & Heating London LTD based in NW1) to the dearest boiler installation £1,200 (AP UK PLUMBING based in SW8).

New combi boilers cost from around £650 to £2,500 depending on the manufacturer and kW output.

Comparing London 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 London.

^*Prices are estimates based on the hourly or day rate of heating engineers in London, UK boiler offers and materials.