Range from the cheapest new boiler installation £700 (Nat gas based in BR3) to the dearest boiler installation £1,040 (J Williams based in BR3).

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

Comparing SE20 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 SE20.

^*Prices are estimates based on the hourly or day rate of heating engineers in SE20, UK boiler offers and materials.