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Croydon BoilerInstallation

Prices · Croydon

How much does a new boiler cost in Croydon?

The honest answer is “it depends”, but on a short list of things you can check yourself. Here’s what changes the price, what a fair quote should include, and how to get a fixed one in two minutes.

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What changes the price

Eight things that decide what you pay

Two homes with the same boiler can have very different installation costs. These are the reasons.

Like-for-like or a change

Swapping a combi for a combi in the same spot is the cheapest job. Converting from a system, regular or back boiler adds labour, materials and usually a day.

Moving the boiler

A new position means new gas, water and condensate runs and a new flue. Same wall is cheap; a different room or the loft costs more.

The flue

A straightforward wall flue is simplest. Roof flues, long flue runs and awkward positions near windows or boundaries need more parts and time.

Access and height

A flue on the first floor or above, or in a tight spot over a conservatory, can need a ladder system or tower.

The boiler itself

Brand, output and warranty length make the biggest difference to the parts cost. A larger output costs more but only helps if your home needs it.

Gas supply size

Combis can need more gas than the old boiler. If the pipe from the meter is undersized it has to be upgraded.

Controls

Basic time and temperature controls are included by law. A smart thermostat or weather compensation costs more and saves gas.

State of the system

A heavily sludged system may need a power flush rather than a chemical clean before the new boiler is connected.

Compare like with like

What a fair quote should include

Holding two quotes side by side? Check both include these. If one doesn’t, it isn’t cheaper, it’s smaller.

  • Old boiler removed

    Disconnected safely, taken away and disposed of properly, along with any old tanks or cylinder we take out.

  • System cleaned

    Old radiators are full of sludge that kills new boilers. The system is flushed and dosed with inhibitor, as the regulations and every manufacturer require.

  • Magnetic filter

    Fitted under the boiler to catch the sludge and rust that circulate in older systems, before it reaches the heat exchanger.

  • Controls that meet Boiler Plus

    Every new gas boiler in England needs time and temperature controls, and a combi needs an extra energy-saving measure such as a smart thermostat with optimisation.

  • New flue, fitted to the rules

    Flue position is tightly regulated near windows, doors, boundaries and under eaves. We check it, and fit a new flue kit with the boiler.

  • Frost-proof condensate pipe

    Condensing boilers drain water through a small pipe. Run outside, it can freeze and shut the boiler down in a cold snap, so we route and size it to avoid that.

  • Benchmark checklist

    The commissioning record for your boiler, filled in and signed. Manufacturers ask for it before honouring a warranty claim.

  • Building Regulations certificate

    Fitting a boiler is notifiable work. We notify Building Control through the Gas Safe Register, and you get a compliance certificate in the post.

  • Warranty registered

    Most manufacturers need registering within 30 days of fitting or the warranty is shorter. We do it for you, in your name.

Running costs

The cheapest boiler isn’t always the cheapest to own

A modern condensing boiler set up properly, with the flow temperature turned down and decent controls, can use noticeably less gas than one fitted and left on factory settings. Ask us to set yours up for low-temperature running.

Warranty length matters too. A longer manufacturer warranty, which depends on the brand and on the boiler being serviced every year, can save the cost of a repair or two over the boiler’s life. See boiler servicing for what that involves.

FAQ

Boiler cost questions

Why don’t you list prices for every boiler?

Because the boiler is only part of the price. The flue, the position, the gas supply and the state of your system change the total more than the brand does. A price that ignores those is a guess, and guesses grow on the day. Our quote form asks about all of them so the price you get is the price you pay.

Can I get a price without a home visit?

Usually, yes. With your answers and a few photos of the boiler, the flue outside and the pipes underneath, most straightforward replacements can be priced remotely. If something needs a closer look, we arrange a quick visit.

Is a cheaper quote always worse?

Not always, but check what’s missing. Compare whether each quote includes the system clean, a magnetic filter, compliant controls, a new flue, removal of the old boiler, Building Regulations notification and warranty registration.

Are there grants for a new gas boiler?

Government schemes mostly fund insulation and low-carbon heating rather than new gas boilers, and eligibility depends on income, benefits and the home’s energy rating. Check the GOV.UK energy grants pages or Croydon Council for what’s open now.

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