Boiler Installation in South London
Fixed price combi boiler installation for South London's Victorian terraces, ex-local authority flats and riverside new builds — fitted by Gas Safe registered engineers who know the difference between the three.
How much does boiler installation cost in South London?
Combi boiler installation in South London starts from £1,399, fully supplied and fitted, with your thermostat, chemical inhibitor, scale reducer, copper pipework and Gas Safe certificate all included. There are no call-out charges and nothing added once the engineer is on site. Larger boilers for family homes in Wimbledon or Dulwich go up to £2,699, depending on boiler size and brand rather than your postcode.
Boiler Installers Who Know South London Properties
South London covers everything from Victorian terraces in Clapham and Streatham, to ex-local authority flats in Peckham and Lewisham, to riverside new-build developments in Greenwich and Battersea. Each needs a different approach. We install boilers across every South London postcode, every week.
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Ex-local authority flats & communal heating
Some blocks in Peckham and Lewisham run communal systems rather than private combi setups. We assess this first and advise honestly before quoting anything.
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Riverside new-build developments
Greenwich and Battersea riverside developments often require management company sign-off before gas work starts. We handle that documentation as standard.
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Victorian & Edwardian terrace pipework
Clapham, Streatham and Tooting terraces frequently still run older pipework. We assess and upgrade what's needed as part of one fixed-price job.
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Hard water scale build-up
South London's water supply is particularly hard, which accelerates boiler wear in older systems. Every installation includes a scale reducer as standard, not an add-on.
Best Boiler for South London Homes, Flats & New Builds
South London's housing stock spans compact flats to large detached houses, so boiler choice needs to match the property, not a one-size-fits-all default. Here's what we recommend, based on 500+ installations across SE, SW and CR postcodes.
24kW Combi Boiler
Compact units suited to Brixton and Peckham flats and one-bathroom terraced conversions.
See 24kW packages →28kW–30kW Combi Boiler
Handles two bathrooms comfortably — right for family terraces across Clapham, Streatham and Tooting.
See 28-30kW packages →30kW+ Combi or System Boiler
Detached and semi-detached houses in Wimbledon and Dulwich with multiple bathrooms often need higher output. Call for a free sizing check.
Ask an engineer →Why South London Homeowners Choose Us
Price published before you call
Most South London installers only quote after a site visit. Ours are published on our packages page — what you see is what you pay.
Gas Safe, NAPIT & City & Guilds
Every engineer carries a valid Gas Safe ID card you can check on arrival — no unqualified workers, ever.
500+ installs across London
From Peckham conversions to Wimbledon family houses — we've handled the property types South London brings.
Scale reducer fitted as standard
South London's hard water is a leading cause of boiler breakdown. Every installation includes a scale reducer and chemical inhibitor at no extra cost.
Same day & next day available
Subject to engineer availability — call in the morning and we'll confirm a slot for your South London postcode the same day.
Certificate issued same day
Your Gas Safe certificate and warranty registration are completed before the engineer leaves — no chasing paperwork afterwards.
South London Boiler Installation — Common Questions
Can you install a combi boiler in an ex-local authority flat?
Yes, in most cases. Some ex-local authority blocks in Peckham and Lewisham run on communal heating, which needs a different approach to a private combi installation. We assess your system first and advise honestly on what's possible before quoting.
Do riverside new-build flats in Greenwich need management company approval?
Often yes. Riverside developments frequently require the development's management company to be notified before gas work begins. We provide our Gas Safe registration and insurance documents to speed this up.
How long does boiler installation take in a South London terrace?
A like-for-like combi swap in a Victorian or Edwardian terrace across Clapham or Streatham takes 4 to 6 hours. Larger houses in Wimbledon or Dulwich needing new pipework typically take a full day.
What size boiler do I need for a South London home?
Most one and two bedroom flats across Brixton, Peckham and Tooting are well served by a 24kW to 28kW combi. Larger detached and semi-detached houses in Wimbledon or Dulwich with multiple bathrooms typically need 30kW or above.
Do you offer same day boiler installation in South London?
Yes, subject to engineer availability. Call in the morning and we'll confirm same day or next day availability for your SE, SW or CR postcode.
Get a Fixed Price for Your South London Boiler Today
Tell us your postcode and property type on WhatsApp and we'll confirm the right boiler size and price before you commit to anything.
Gas Safe Registered · +44 7912 100949 · Available 24/7 for emergencies