New Boiler Installation in Dagenham
Fixed-price new and replacement boilers across Dagenham — RM8, RM9 and RM10 — from our Dagenham base. Free survey, honest advice and extended manufacturer warranties on selected brands. Call 07927 882561.
Gas Safe Registered · 587401
Manufacturer Approved
Fully Insured
Same-Day Service
Local Engineers
Upfront cost — no obligation A new boiler is a big purchase, so it’s worth getting right — and it helps to have an installer who’s local. Gas First fits new and replacement boilers right across Dagenham, from a local base, including the Becontree estate and the RM8, RM9 and RM10 postcodes. We start with a free, no-obligation survey, recommend the right boiler for your home and budget rather than the one that earns us the most, and give you a clear fixed price before any work begins.
Time for a new boiler in Dagenham?
A lot of Dagenham’s housing is interwar Becontree stock, and we still see plenty of ageing boilers and older back-boiler systems that have reached the end of their useful life. Once a boiler is old, unreliable or uneconomical to repair, a new one is usually the better long-term investment. The right replacement depends on your home, not just the price: a combi suits smaller homes and flats with one bathroom, while a system boiler with a cylinder suits larger homes where several taps run at once. During your free survey we look at your property, your hot water demand and your existing setup, and recommend the right type, size and model — and explain why.
A lot of Dagenham’s housing is interwar Becontree stock, and we still see plenty of ageing boilers and older back-boiler systems that have reached…
What's included in a Gas First installation
Our installations are done properly, not rushed. Every install includes a survey and fixed quote; supply and fitting of your new boiler; removal and safe disposal of the old one; a system flush to protect the new boiler; a magnetic filter; connection of controls and thermostat; all necessary pipework and flue work; registration of your manufacturer’s warranty; notification to Gas Safe and Building Control; and a full test and commission on completion. Most straightforward swaps are completed in a day, and we tell you the timescale upfront for bigger jobs such as system conversions. We leave the job clean and show you how everything works before we go.
Extended warranties, and a local team
As accredited installers for several manufacturers, we can register and often extend your boiler’s warranty. As a Baxi Works accredited installer, for example, we can extend a Main boiler’s warranty from 2 years to 5 at no extra cost, and up to 10 years is available on selected Vaillant, Worcester Bosch, Ideal and Glow-worm models. A local Dagenham base means a faster, more personal service from survey to aftercare — and because keeping to an annual boiler service is a condition of most warranties, we can look after that for you too, so your cover always stays valid. We’re Gas Safe registered (587401) and fully insured.
As accredited installers for several manufacturers, we can register and often extend your boiler’s warranty.
A recent boiler installation in Dagenham
A homeowner in Dagenham had an ageing Vaillant Turbomax combi, around 20 years old, that had developed a number of faults — a repair was no longer financially viable. They wanted a modern combi with a 5-year warranty but were working to a limited budget. We recommended the Main Eco Compact: a reliable, well-priced mid-range combi that comes with a 2-year manufacturer’s warranty which, as a Baxi Works accredited installer, we extended to 5 years at no extra cost. We removed the old boiler, fitted the new Main Eco Compact, flushed the system and commissioned it. We’ve serviced it every year since and it’s still running in good condition — exactly the reliable, affordable upgrade the customer was after.

Frequently Asked Questions
How much does a new boiler cost in Dagenham?
Installations start from our fixed 'from' price, and the final figure depends on the boiler you choose and your property. We give you a clear fixed price after a free, no-obligation survey — no hidden extras.
How long does a boiler installation take?
Most straightforward swaps are completed in a day. Conversions or relocations can take two to three days, and we tell you the timescale when we quote.
What warranty do I get?
Your boiler's manufacturer warranty, which we register for you. On selected brands we can extend it — for example a Main boiler from 2 to 5 years as a Baxi Works installer, and up to 10 years on selected Vaillant, Worcester Bosch, Ideal and Glow-worm models.
Should I choose a combi or system boiler?
A combi suits smaller homes and flats with one bathroom; a system boiler with a cylinder suits larger homes where several taps run at once. We advise the right choice at the free survey.
Do you remove the old boiler?
Yes — removal and safe disposal of your old boiler is included.
Which parts of Dagenham do you cover?
All of Dagenham — RM8, RM9 and RM10, including the Becontree estate.
Are you Gas Safe registered?
Yes — Gas First is Gas Safe registered, registration number 587401, and fully insured.
What Our Customers Say
Rated 5 stars by customers across East London
“Highly recommend for any boiler issues. We used them for our annual service and to fix several other issues. The engineer was incredibly thorough, he even took the time to overhaul the system. It's rare to find an engineer who is this transparent and knowledgeable. Fair pricing and excellent communication throughout. Will definitely use them again next year and any time we need them.”
Josh Uddin | East London
“Problem solved quickly.”
Julfa Begum | East Ham, East London
“Very responsive and reliable for boiler issues.”
Georgia Fagg | Bow, East London
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Why Choose Gas First Ltd?
Professional, reliable, and certified gas engineering services across East London
Gas Safe Registered
All work carried out by fully certified Gas Safe engineers
Fast Emergency Response
Quick attendance for urgent gas & heating issues across East London
Transparent Pricing
Fair quotes with no hidden charges — you know the cost upfront
5-Star Customer Service
Rated highly by homeowners & landlords across East London
Experienced Local Engineers
Skilled team covering all East London boroughs
Domestic & Commercial
Services for homes, rentals, and businesses
Areas We Cover
We provide gas, boiler, and plumbing services across East London and nearby areas.
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Contact Gas First Ltd today for fast, professional gas, boiler, and plumbing services across East London.