Installed by Gas Safe Engineers, with up to 12-Year Warranties & a Free Wireless Thermostat Included.
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Seen a cheaper new boiler installation quote? we’ll beat it Guaranteed!
A-rated boilers installed from £1795
Premium cylinders installed from £1599
Book your boiler service for just £108
Boiler not working? We’ll fix it from £108
Free survey & quote for all ASHP installs
Get complete boiler cover from £12p/m
Answer a few questions about your property
Our team will check the information provided.
Once confirmed, we will install your new boiler
Registered & Certified Pros
Master Gas London provides professional new boiler installations for homeowners and landlords, delivering safe, efficient heating solutions tailored to each property.
Our Gas Safe registered engineers install combi, system, and regular boilers, alongside unvented cylinder installations, boiler servicing, boiler repairs, and flexible boiler cover plans.
Whether you’re replacing an old boiler or upgrading your heating system, we offer clear advice, transparent pricing, and a straightforward installation process from start to finish.
Barking and Dagenham
Barnet
Bexley
Brent
Bromley
Camden
Croydon
Ealing
Enfield
Greenwich
Hackney
Hammersmith and Fulham
Haringey
Harrow
Havering
Hillingdon
Hounslow
Islington
Kensington and Chelsea
Kingston upon Thames
Lambeth
Lewisham
Merton
Newham
Redbridge
Richmond upon Thames
Southwark
Sutton
Tower Hamlets
Waltham Forest
Wandsworth
Westminster
Basildon
Billericay
Brentwood
Buckhurst Hill
Chigwell
Danbury
Debden
Dunmow
Epping
Grays
Harlow
Hornchurch
Ilford
Ingatestone
Laindon
Loughton
Maldon
Ongar
Rayleigh
Romford
Saffron Walden
Shenfield
Southend-on-Sea
Stanford-le-Hope
Upminster
Waltham Abbey
Westcliff-on-Sea
Witham
Woodford Green
Abbots Langley
Baldock
Borehamwood
Broxbourne
Buntingford
Bushey
Cheshunt
Chorleywood
Croxley Green
Cuffley
Elstree
Goffs Oak
Harpenden
Hatfield
Hertford
Hitchin
Hoddesdon
Kings Langley
Letchworth Garden City
Little Hadham
London Colney
Much Hadham
Potters Bar
Puckeridge
Radlett
Redbourn
Rickmansworth
Royston
South Mimms
St Albans
Standon
Stevenage
Ware
Waltham Abbey
Welwyn
Welwyn Garden City
Wheathampstead
Our most popular boiler installation packages are installed by Gas Safe engineers, include long manufacturer warranties, and come with a free wireless thermostat as standard.
Just enter your details and answer a few quick questions about your property. Our system recommends the right boiler size for your home and gives you a fixed price – instantly. No waiting, no hidden fees.
Yes, all our quotes include full professional installation by a Gas Safe registered engineer. There are no surprise charges – what you see is what you pay.
Yes – if you have a written quote from a registered company (not a sole trader), we’ll beat it. Just upload it or tell us during the process, and we’ll take care of the rest.
You get a free annual boiler service and a gas safety certificate, together worth £192. It’s our way of giving you peace of mind for the first year after installation.
We offer next day installation, subject to availability. If you need your boiler urgently, let us know during the quote process – we’ll do everything we can to fit you in quickly.
We install boilers across London, Essex, and Hertfordshire. If you’re unsure whether we cover your area, just complete the quote form – if we can’t serve your postcode, we’ll let you know right away.
Yes, we remove and responsibly dispose of your old boiler as part of the installation – no extra charge.
