Emergency Boiler Repair London

Fast, 24/7 reliable emergency boiler repairs across London.
Gas Safe registered engineers. Fixed fast, day or night.

• About Us

Local Emergency Boiler Repair Specialists in London

We provide fast and professional emergency boiler repairs for homeowners and landlords across London. Our Gas Safe engineers are fully qualified to diagnose and fix all boiler faults quickly and safely.

Round-the-Clock Emergency Boiler Repairs

Repairs for All Boiler Makes & Models

Same-Day & Out-of-Hours Repairs

• Our Services

Our Emergency Boiler Repair Services Include

Urgent Boiler Breakdown Repairs

Immediate call-outs for broken boilers, leaks, error codes, or complete shutdowns.

Heating & Hot Water Restored Fast

Diagnose and repair faults causing loss of heating or hot water, restoring comfort quickly.

Boiler Pressure & Circulation Problems

Fixing low/high boiler pressure, leaks, expansion vessel faults, and circulation problems.

Boiler Fault Finding & Diagnostics

Advanced fault-finding for modern boilers, including electronic and sensor-related issues.

Call us and we will help you right away. Give us a quick call

• Our Process

We fix your boiler quickly in 4 simple steps:

1 Get in Touch

Tell us what’s happening. We’ll ask a few questions and give immediate advice.

2 Fast Engineer Dispatch

We send the nearest available Gas Safe engineer. Usually on-site within 40–60 minutes across London.

3 Clear Diagnosis & Honest Pricing

We inspect the problem, explain what’s needed, and provide clear, honest pricing before starting any work.

4 Expert Repair & Full Testing

We fix the issue efficiently with professional tools and quality parts. Fully tested before we leave.

4.9

Over 300 Reviews

• Why Us

What Makes Us Different

40 Min Arrival

We reach you within 40 minutes for emergency call-outs, getting help to you fast when time matters most.

Trusted Locally

Built on reputation and repeat customers, we’re trusted locally for reliable work and honest service.

Local Service

We’re based nearby, which means faster response times and fair pricing with no hidden costs.

Competitive Prices

Clear, honest pricing with no hidden fees, quality work at rates that make sense.

24/7 Emergency Service London

We’re available 24/7 to respond quickly, day or night. Holidays & Weekends.

Domestic & Commercial Services

We provide reliable plumbing and on-site services for homes, landlords and businesses of all sizes.

• FAQs

Frequently Asked Questions

Which areas of London do you cover?

We cover all areas of London & Greater London. Our engineers and plumbers are based across North, South, East, and West London, so we can respond quickly no matter where you’re located. We regularly serve homes and businesses in areas such as Westminster, Camden, Islington, Hackney, Greenwich, Croydon, Ealing, Hammersmith, Richmond, and beyond.

We also work in parts of Greater London and nearby areas, depending on the job type and urgency. If you’re not sure whether we cover your postcode, just give us a call, chances are, we do.

Because we have engineers based across the city, we can usually reach you the same day for emergencies. For planned work such as boiler installations, powerflushing, or heating upgrades, we’ll schedule a time that suits you. Our focus is on reliability and coverage, ensuring London homes and businesses have a dependable local team whenever they need us.

How often should I service my boiler?

Your boiler should be serviced once a year to keep it running safely and efficiently. Annual servicing helps prevent breakdowns, reduces energy use and ensures your warranty remains valid.

During a service, an engineer will inspect all major components, check gas pressure, test safety controls and make sure there are no leaks or carbon monoxide risks. If small faults are spotted, they can be fixed before turning into expensive repairs.

Regular servicing also keeps your central heating working properly and helps extend the lifespan of your boiler. It’s especially important before winter, when your heating system is in constant use.

If you’re a landlord, you’re legally required to have an annual gas safety check on any rented property but homeowners benefit just as much from keeping their boiler maintained yearly.

Are your engineers certified?

Yes all our engineers and plumbers are fully certified, trained and Gas Safe registered. This means they’re legally qualified to work on boilers, and central heating systems. Every engineer carries their Gas Safe ID and you can always ask to see it before any work begins.

In addition to Gas Safe certification, our team is experienced in all areas of plumbing, heating, and electrical work. We keep up to date with the latest safety standards and manufacturer training so every job is carried out correctly and safely.

It ensures your system is repaired or installed to the highest standard and guarantees your safety. Whether you need an emergency repair, installation, or inspection, you’ll always get a qualified professional on-site.

Can you help with gas safety certificates for landlords?

Yes we carry out Gas Safety Inspections (CP12 certificates) for landlords across London. If you rent out a property it’s a legal requirement to have the system inspected annually by a Gas Safe registered engineer.

Our team can test all boilers and pipework to make sure everything is safe and compliant. Once the inspection is complete, we’ll issue your Gas Safety Certificate straight away, either digitally or in print.

We also offer reminders when your next inspection is due, making it easy to stay compliant without last-minute stress. For landlords managing multiple properties, we can schedule inspections in batches to save time and avoid certificate gaps.

Get an Emergency Boiler Repair Engineer at Your Door Fast

Onsite Contractors and Plumbing Ltd. has been serving London for over 10 years.

We are a locally owned and operated business dedicated to customer satisfaction.

Over 70% of our work comes through referrals, reflecting the trust our customers place in us.

Whether you need plumbing, heating, or gas services, our experienced team is here to help.

Onsite Contractors and Plumbing Ltd. Registered office address: Apex House, 2nd Floor, Grand Arcade, London, England, N12 0EH, Company number : 09510946