Range from the cheapest new boiler installation £800 (R V Gas & Plumbing Services based in SW9) to the dearest boiler installation £1,300 (Hepco Limited based in SW3).

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

Comparing Whitehall 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 Whitehall.

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