Range from the cheapest new boiler installation £700 (24/7 Gas and Heating Services based in CR4) to the dearest boiler installation £2,300 (Multivega+ Heating Services based in SE1).
From £2,523
Reliable and experienced heating engineers with competitive rates and good at keeping within budget. Happy to provide examples of heating engineeri...
From £2,943
Multivega+ Heating Services prides in delivering an excellent heating engineering service and value for money in SW20 and the surrounding areas. O...
From £2,443
Lambert Heating & Renewables Ltd is a Carshalton-based heating company providing boiler servicing, boiler repairs and fault finding, new boiler ins...
From £1,343
Member since September 2026
24/7/365 Gas and Heating, plumbing Services: We undertake complete Gold standard domestic Gas, plumbing and central heating service, repairs a...
From £1,637
Experienced heating engineer ready to quote for your work. J&J Building Solutions is the best heating engineer in SW20. No obligation free quotes a...
From £1,675
Fast response for all your heating engineering needs around SW20
JM HEATING AND PLUMBING SERVICES LTD are an establis...
From £1,745
If you are looking for a SW20 heating engineer and you need something replaced, fitted, or fixed, contact Majestic Building Maintenance Ltd today. ...
From £1,701
Fast response for all your heating engineering needs around SW20
East London Gas & Heating are an established and exp...
From £1,613
Get a Heating Engineer in SW20 who you can trust. Madyson Global Trade Ltd provide friendly and reliable heating engineering services to the SW20 a...
From £1,625
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
New combi boilers cost from around £650 to £2,500 depending on the manufacturer and kW output.
Comparing SW20 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 SW20.
*Prices are estimates based on the hourly or day rate of heating engineers in SW20, UK boiler offers and materials.
"New boiler installation and flush" - SW20, job posted 06/05/26
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 - £1,510
Service a gas fire - £230
Replace a heating programmer - £232
Powerflush - £639 Visit
Heating oil tank installation - £1,401
Replace an oil boiler - £2,880
Install a new boiler - £1,900
Cost to move / relocate boiler - £1,473
Install heated skirting boards - £1,682
LPG boiler installation - £1,818
Install hydrogen boiler - £1,964
Install gas fire - £950
Install chimney liner - £677
Install biomass boiler - £5,773
Install a ground source heat pump - £17,177
Fix a boiler fault code - £153
Fit smart heating controls - £288
Fit a magnetic filter - £195
Fit a radiator - £217
Connect a gas cooker or hob - £242
Boiler service - £107
Boiler repair - £173
Boiler Insurance - £163 per month
Install an air source heat pump - £6,599
