New Boiler Installation in London

Combi, system and regular boilers fitted by Gas Safe registered engineers across North and East London, with a free, fixed-price quote and warranties of up to 10 years.

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A new, efficient boiler can cut your energy bills and end the worry of unexpected breakdowns. Metropolitan Plumbing installs new boilers across North and East London, from Islington, Highbury and Hackney to Chingford, Walthamstow, Enfield and Loughton. We assess your home, recommend the right boiler, give you a fixed price with no hidden extras and handle everything from removing the old boiler to registering the new one with Gas Safe.

Which boiler is right for your home?

Most homes suit one of three types. A combi boiler heats water on demand straight from the mains, with no hot water cylinder or loft tank, which makes it ideal for flats and homes with one bathroom. A system boiler heats a hot water cylinder, so it suits larger homes with two or more bathrooms where several taps and showers run at once. A regular (heat-only) boiler works with a cylinder and a cold water tank in the loft, and is often the best fit for older properties with low mains pressure. We look at your water pressure, hot water use and existing pipework before recommending anything, and never push a bigger boiler than you need.

Converting to a combi boiler

Switching from a regular or system boiler to a combi frees up the airing cupboard and loft, and gives you hot water on demand. It is not right for every home: a combi needs good mains water pressure and flow, and the gas supply often has to be upgraded to cope. We check all of this during the survey, then remove the old cylinder and tanks, cap off redundant pipework and fit the new boiler, so you know exactly what is involved before you commit.

How much does a new boiler cost?

The price of a new boiler depends on the type and size of boiler, the brand and warranty length, whether it is going in the same place as the old one, and any extra work such as a new flue, a gas pipe upgrade or a conversion to a combi. A like-for-like combi swap is the simplest job; relocating a boiler or changing the system type takes longer. After a quick assessment we give you a clear, fixed-price quote that includes the boiler, fitting, system flush, magnetic filter and controls, with no hidden extras.

What happens on installation day

Our engineers protect your floors and furniture, drain down and remove the old boiler, and flush the heating system to clear sludge and debris. We then fit the new boiler, a magnetic filter and your controls, test everything thoroughly and show you how to use it. A straightforward combi replacement usually takes a day, while a system change or relocation can take two to three days. Finally we register the installation with Gas Safe, which notifies Building Control on your behalf, and register your manufacturer's warranty.

Warranties and leading brands

We install boilers from leading manufacturers, chosen for reliability and efficiency rather than the cheapest price. As approved installers we can offer extended manufacturer warranties of up to 10 years on leading brands, and all of our workmanship is guaranteed. We will explain the warranty terms on your chosen boiler, including the annual service needed to keep it valid.

Boiler installation across North and East London

We know the homes we work in. Across Islington, Highbury, Canonbury and Hackney, many properties are Victorian houses or conversions where flue routes, shared supply pipes and unvented cylinders all need careful planning. In Chingford, Walthamstow, Enfield, Loughton and Wanstead, many homes are 1920s and 1930s houses that still run a regular boiler with tanks in the loft, which often makes them good candidates for a combi conversion. Wherever you are, you get the same fixed-price quote and the same Gas Safe registered engineers.

What is included

  • Free, no-obligation fixed-price quote
  • Combi, system and regular boiler installs
  • Combi conversions and boiler relocations
  • Leading brands with up to 10-year warranties
  • System flush and filter fitted as standard
  • Smart heating controls available
  • Gas Safe registration and certification
  • Workmanship guarantee on every installation
Gas Safe Register
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What Our Clients Say

Verified by Checkatrade. Leave us a review

Back Boiler Decommission & New Combi

03 June 2025

Checkatrade
10/10

We got Tommy and his team in to decommission an old back boiler and fit a new combi and we couldn't be happier. We were looking for a quick turnaround as the job was needed to ensure that the sale of the property went through swiftly. I liaised with Jen on the booking of the job, and all the other information including which combi we would have fitted etc - super clear and quick communication from everyone involved. On the days they were here - Both Tommy and the guys working with him were professional, clean and tidy and got the job done with little to no disruption even while I was working.

Postcode: SG2✓ Verified

Kitchen sink unblocked

03 June 2025

Checkatrade
10/10

We are very pleased with the work Metropolitan Plumbing have carried out, speedy and efficient!

Postcode: E4

Satisfied returning customer

08 May 2025

Checkatrade
10/10

Second time I've used Tom & Jen, this time to upgrade my gas supply and replace a boiler. They provided helpful advice when I was deciding which make and model to get, installed it promptly, and helped me with some connectivity issues I had with the Vaillant app. Friendly service and great communication.

Postcode: E10✓ Verified

Boiler Installation FAQs

How much does a new boiler cost?

Prices vary depending on the boiler, the brand and warranty, and how much work your property needs, for example a new flue, a gas pipe upgrade or a combi conversion. We provide a clear, fixed-price quote with no hidden extras after a quick assessment of your home.

How long does a boiler installation take?

A straightforward combi replacement usually takes a day. A more complex system change or relocation may take two to three days.

Which type of boiler do I need?

Combi boilers suit most flats and homes with one bathroom. System boilers suit larger homes with two or more bathrooms. Regular boilers suit some older homes with low mains pressure. We check your water pressure, hot water use and pipework before recommending one.

Can I switch from a regular or system boiler to a combi?

Usually, yes, as long as your mains water pressure and flow are good enough. We check this during the survey, and the conversion includes removing the old cylinder and loft tanks.

Can you move my boiler to a different room?

Often, yes. Moving a boiler involves extra pipework and a new flue position, so it takes longer than a like-for-like swap, but it is all included in your fixed-price quote.

Will I get a certificate for my new boiler?

Yes. We register every installation with Gas Safe, which notifies Building Control, and you will receive a Building Regulations compliance certificate. We also register your manufacturer's warranty.

Can I still have a new gas boiler fitted?

Yes. You can still replace the gas boiler in an existing home. Rules on low-carbon heating for brand-new homes do not stop you replacing the boiler you have now.

Do you offer finance?

Get in touch and we will talk you through the payment and warranty options available on your chosen boiler.

Which areas do you cover for boiler installation?

We install boilers across North and East London, including Islington, Angel, Highbury, Canonbury, Hackney, Chingford, Walthamstow, Leyton, Woodford, Wanstead, Enfield and Loughton.

Get a fixed-price quote for your new boiler

Our Gas Safe registered local team is ready to help. Call now or request a free, no-obligation quote.