Gas Boiler Installation in Greater London (86)

Are you planning a gas boiler installation in London? From understanding the costs to choosing the right installer, here’s what you need to know to hire safely and confidently.

Enter your postcode to find checked Gas Safe registered engineers for gas boiler installation near you.

Who can install a gas boiler?

Only Gas Safe registered tradespeople can legally install gas boilers in the UK. DIY installation is illegal and dangerous, as gas leaks can cause fires, explosions, or carbon monoxide poisoning.

Checking Gas Safe registration

To verify your that your installer is on the Gas Safe Register:

• Ask to see their Gas Safe ID card (check photo, ID number, and qualifications)
• Search the Gas Safe Register by their ID number or company name
• Never hire a boiler installer if you can’t confirm their registration

Advantages of gas boilers

• High energy efficiency
• Easy to install
• Offer reliable and consistent heat
• No need for an on-site fuel storage tank, as with an oil boiler

Disadvantages of gas boilers

• Gas boilers release CO2 and other gases into the atmosphere
• The rising (and fluctuating) cost of fossil fuels can make gas boilers expensive to run
• Gas leaks carry risk — install a carbon monoxide detector for safety
• They require annual servicing

Gas boiler installation costs

The average cost of gas combi boiler installation in the UK is around:

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• ~£3,000 for supply + installation

However, several factors can affect the cost of installing a gas boiler:

• Boiler make and model
• Pipework changes or relocation
• Extra work (e.g., flue replacement)
• Regional labour rate differences

Tip: Request quotes from several Gas Safe registered engineers in your area before booking your gas boiler installation. That way, you can compare prices to ensure you receive a fair and competitive rate.

When you contact or pay a trade through Checkatrade, you’re covered by our 12-month guarantee of up to £1,000 (T&Cs Apply).

Alternatives to gas boilers

If gas isn’t the best fit for your home and needs, here are some alternatives to consider:

• Oil or LPG boilers
• Electric boilers
• Biomass boilers
• Air source heat pumps
• Solar-powered electric heating

To decide on the most suitable heating system for your home, compare running costs, installation costs, energy efficiency, and environmental impact.

Lifespan of a gas boiler

A conventional gas boiler usually lasts up to 15 years, but regular servicing can extend this to 20 years or more. Investing in a quality boiler will often result in greater durability.

Find gas boiler installation in London

When searching for a gas boiler installer in your area, follow these steps to help make the right choice of hire:

• Ask friends or family for recommendations
• Read customer reviews and ratings online
• Request quotes from a selection of installers to compare prices
• Verify Gas Safe registration and insurance details

Search for gas boiler installation with Checkatrade to find tradespeople we've checked and reviewed, who are committed to quality and a job done right.