24 hour gas boiler repair in London (81)

Need a boiler service in London? Whether your heating’s packed in or you’re due a routine check, Checkatrade can help you find engineers across the capital who cover your local area - from Camden to Croydon, Hackney to Hounslow.

All tradespeople on Checkatrade go through up to 12 checks before joining, including Gas Safe registration, insurance, qualifications and ID. So whether you need emergency boiler repair in London, a full installation, or a quick boiler check, you’ll know you’re in safe hands.

Looking for the best boiler service prices in London? Want to compare engineers in your postcode? With thousands of reviews from real Londoners, you're in the right place to start searching for someone working nearby who’s ready to help.

What to expect from hiring a boiler engineer in London

Common jobs

• Annual gas boiler service
• Emergency boiler repairs
• Boiler installation and replacements
• Central heating system checks
• Combi boiler servicing

Gas boiler servicing and repair: Average costs in London

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Want a deeper breakdown? See our boiler servicing cost guide for up-to-date prices.

What’s included in a typical boiler service

• Visual inspection
• Gas pressure and flue checks
• Control and component testing
• Cleaning (if required)
• Service record/report

What affects the final cost?

• Your boiler’s make, model and type (Combi, system or conventional)
• Location within London
• Whether repairs or parts are needed
• If it’s part of a maintenance plan or a one-off

How long does it take to service a gas boiler?

Usually around 1 hour for a standard service.

What qualifications to check

• Gas Safe registration (legal requirement)
• NVQ Level 3 in gas installation (or equivalent)
• Manufacturer-approved training for specific boiler brands

Read our guide on how to find a Gas Safe engineer.

Boiler engineers in London: Homeowners vs Renters

Homeowners

You’re responsible for booking regular boiler servicing and arranging any repairs. Most warranties also require an annual boiler check, so keep those records safe. If you’re selling your home, up-to-date servicing history can be a real plus.

Renters

Your landlord is responsible for annual gas safety checks and boiler servicing. But if your heating breaks down, report it to your letting agent or landlord as soon as possible. For emergencies, they may use their preferred gas engineer, so always check before booking your own.

Emergency boiler repair in London

Boiler gone cold? Lost hot water? If you’ve got no heating and it’s freezing outside, or you suspect a gas leak, don’t wait.

Common urgent problems include:

• No heating or hot water
• Leaks or pressure drops
• Gas smells or carbon monoxide alarm sounding
• Complete system shutdown

Steps to take:

1. Switch off the boiler
2. Open windows if you smell gas
3. Call the National Gas Emergency Service: 0800 111 999
4. Search for emergency boiler repairs in London on Checkatrade

We’ll help you find someone quickly and safely who covers your local area.

For urgent gas boiler repair in London, search for checked Gas Safe engineers or use our request a quote tool for a quick callback.

Find a gas boiler engineer near you in London

Looking for help with any of the following? You’re in the right place.

• Annual boiler service
• Boiler repairs or diagnostics
• Emergency boiler repairs
• New boiler installation
• Radiator not heating up
• Strange noises or error codes
• Pilot light keeps going out
• Central heating issues
• Combi boiler service
• Gas boiler pressure problems

Ready to get started? Use Checkatrade's directory to find checked gas boiler servicing and repair in London.

Find the right boiler engineer for the job you need

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Find gas boiler engineers in your area of London

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