Gas Safe Engineer London

Need a Gas Safe engineer for a gas or heating problem? Our team of Gas Safe registered engineers is available 24/7 including weekends and holidays across Greater London with a 40-minute arrival time.

Gas Safe

Certified

40 Minutes

Arrival

24/7

Service

Emergency Repairs

Our out-of-hours service is available for all gas emergencies. Call us now for immediate help.

Gas Safe Engineering Services

With over 10 years of experience, OnSite Contractors & Plumbing provides Gas Safe engineers in London and Greater London for domestic and commercial customers. With more than 10 years of experience dealing with faulty boilers, heating problems and gas appliance issues, we know how to properly handle every gas issue. Our team of engineers is qualified and certified to safely repair and install your gas appliances.

In addition to the repair and installation services we can also provide fully certified gas safety checks and gas safety certificates for landlords.

You can contact us any time, we are available 24/7 including weekends and holidays. Tell us your location and requirements, and you’ll have an engineer at your property within 40 minutes.

Why Choose Onsite

24/7 Availability

Our engineers are available any time of the day and night, including weekends and holidays, with 40 minutes arrival time.

Gas Safe Registered

All our engineers are fully certified and accredited by Gas to complete gas work and safety inspections.

Domestic & Commercial

Gas boiler and heating services for landlords and businesses owners.

Experience

Over 10 years of experience providing trusted Gas Safe engineer services in London.

Services We Provide

Gas Boiler Repairs

We arrange boiler repairs for boilers that have stopped working, are losing pressure or are failing to provide heating or hot water. Call us to explain the problem and book a repair.

Gas Boiler Servicing

Our team handles gas boiler servicing from qualified engineers to check your boiler, identify issues and maintain its operation. Contact us to arrange a boiler service with a qualified boiler engineer near you.

Boiler Installation

We provide boiler installation for new and replacement boilers in homes and commercial properties. Contact us to discuss your heating requirements and book an installation.

Gas Pipework and Leak Detection

We offer gas pipework installation, replacement and repairs, including gas leak detection. Contact us to organise an assessment of your gas supply pipework.

Gas Safety Checks and Certificates

Book a gas safety check for your boiler. Following a successful inspection, we arrange your Gas Safety Certificate (CP12) for landlords.

Emergency Gas and Boiler Repairs

We provide emergency gas and boiler services for sudden breakdowns, gas issues or loss of heating and hot water. Call us to explain the problem and get urgent help.

Our Process

Call us now and one of our team’s gas safe engineers will come, assess the property and handle the nessecary repair.

01 Tell Us What You Need

Contact us via phone or WhatsApp and tell us whether you need boiler repair, installation, servicing or a gas safety check for your property.

02 Book Your Appointment

We arrange a suitable appointment for your home, rental property or business across Greater London, at a convenient time that works best for you.

03 Our Gas Safe Engineer Visit

One of our qualified engineers attends your property to carry out the work, inspection or safety checks after assessing what is required.

04 Work Completed Within the Same Visit

We can complete most jobs in one visit. Once the work is completed, you will receive a report outlining the work and advisory notices.

Boiler Brands We Handle

Our team of engineers can handle the repair, installation and servicing of all major boiler brands, including some of the biggest names in the industry.

Vaillant

Vaillant boilers can develop ignition faults, pressure problems, sensor issues and faults with fans or electronic controls. Our Gas Safe engineers can inspect Vaillant combi, system and regular boilers, diagnose the cause and carry out the required gas, electrical and heating system checks. We also handle servicing, safety checks and other gas engineering work to keep the boiler operating safely.

Ideal

Ideal boilers can develop ignition problems, low pressure, circulation faults, sensor issues and repeated error codes. Our Gas Safe engineers can inspect Ideal combi, system and regular boilers, identify the cause of the issue and carry out the necessary gas, electrical and system checks. We also provide servicing and gas safety work to keep the boiler operating correctly.

Worcester Bosch

Worcester Bosch boilers can develop pressure loss, ignition faults, overheating, circulation problems and issues with sensors or controls. Our Gas Safe engineers can work on Worcester Bosch combi, system and regular boilers, carrying out the necessary checks to identify faults and ensure the appliance is operating safely. We also provide servicing and other gas engineering services.

Baxi

Baxi boilers can experience ignition faults, low pressure, heating problems, sensor failures and issues with pumps or electronic controls. Our Gas Safe engineers can inspect Baxi boilers, diagnose the cause of the problem and carry out the required gas and system checks. We also handle servicing, safety checks and other gas engineering work.

CORGI

CORGI boilers can develop problems with ignition, pressure, heating output, sensors and other internal components as they age. Our Gas Safe engineers can inspect the boiler, identify the cause of the issue and carry out the appropriate gas, electrical and heating system checks. We also provide servicing and gas safety services to help keep the appliance operating safely.

Combi

Combi boilers can develop problems with pressure, ignition, hot water flow, heating output, pumps and internal sensors. Our Gas Safe engineers can inspect the boiler, diagnose faults and carry out the necessary gas, electrical and system checks. We also provide servicing and safety checks to keep your combi boiler working correctly.

System Boilers

System boilers can experience pressure loss, circulation problems, pump faults, sensor issues and problems with heating or hot water. Our Gas Safe engineers can inspect the boiler and connected heating components, identify the cause of the problem and carry out the required checks. We also provide servicing and gas safety work for system boilers.

Trusted Across Greater London

      EXCELLENT  
   Based on 145 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   1 Alamby 
 
 
 
 Trustindex verifies that the original source of the review is Google. Have had plenty of bad experiences, but this company is the best, fast, no nonsense and gets the work done
  
 
      Posted on Google  
   
   Daniele Messina 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would like to recommend this service: it was quite easy to book and have an appointment in a short term. Armand the plumber was very professional, and I had my gas safety check and my boiler checked in time. Armand was also able to respond to all my questions. So it is a 5 star's evaluation for me.
  
 
      Posted on Google  
   
   Shahram Parvizi 
 
 
 
 Trustindex verifies that the original source of the review is Google. Recently use this company for my workshop ,excellent service,will use agin in future you. Thank you
  
 
      Posted on Google  
   
   Hanna Katz 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great responce and commendable customer care service ! Armand was willing to support and his manarism was great. Will definitely contiue using his services.
  
 
      Posted on Google  
   
   Beata Dejnek-Lowe 
 
 
 
 Trustindex verifies that the original source of the review is Google. Boiler Repair Service Review

Today I had my boiler repaired, and I am extremely satisfied with the service. From start to finish, the process was seamless. Armand the engineer was punctual, professional, and highly knowledgeable. He quickly diagnosed the issue, explained the problem in simple terms.
The repair itself was efficient, Armand ensured everything was working perfectly before leaving. He even gave me some tips on maintaining the boiler to avoid future problems.
Overall, this was a stress-free experience, and I’d highly recommend Armand and his company for any boiler repairs.
  
 
      Posted on Google  
   
   YOUMITRA TRIPATHI 
 
 
 
 Trustindex verifies that the original source of the review is Google. Awesome service, I am thoroughly impressed with the service I received from Armand. He was punctual, professional, and extremely thorough. My boiler is now running perfectly, and I feel confident it was fixed correctly. I highly recommend his services!
  
 
      Posted on Google  
   
   Lala Booda 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very Highly recommended. I will use them again!
My new boiler was installed like a well drilled operation.  Everything done precisely on time and as Armand said it would.
  
 
      Posted on Google  
   
   Tudor Ursu 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service from Onsite Contractors and Pluming Ltd, the boiler was repaired within 2 hours from calling this company. Really greatfull for their outstanding response, been charget a very fair price for the job.I recommend them from my heart. Thank you guys!
  
 
      Posted on Google  
   
   Joey B 
 
 
 
 Trustindex verifies that the original source of the review is Google. Rapid response from Armand to a Google Local Services request. Good comms via WhatsApp. Same day attendance. I live in a tricky area for parking but Armand managed that without complaint. Quickly diagnosed and resolved the problem with my heating system, made efficiency improvements, and taught me a few things along the way for future reference. The following morning I had a worsening situation due to air and pressure changes settling in the system overnight (unavoidable) but Armand was responding to my messages from 6:51am and helping me to relay instructions to my tenant in real time to apply a final fix. The heating system is now working incredibly effectively and efficiently. I'm burning hardly any gas to keep the property warm. Gas bill reducing substantially now. As with everything these days, skilled people don't come cheap; you get what you pay for and I would recommend Armand to others.

Areas We Cover

OnSite Contractors & Plumbing provides gas safe engineering services across Greater London, covering North, South, East, West and Central London. Contact us to book a qualified engineer near you for boiler repairs, installations, servicing or gas safety checks.

Frequently Asked Questions

Can I sell my house without a Gas Safe certificate?

A Gas Safety Certificate is not usually required to sell a home across Greater London, but landlords must meet gas safety obligations. Call us to book a local Gas Safe engineer for your landlord gas safety check and certificate.

How long do Gas Engineer repairs take ?

The length of time required depends on the job. Contact us today by phone or whatsapp and our team can give you an estimation over the phone of the amount of time it may take.

What time do gas engineers work?

At OnSite Contractors & Plumbing, we provide Gas Safe engineering services 24 hours a day, 7 days a week, including weekends and holidays. Call us to book an appointment.

Can a plumber do a gas safety check?

Only a Gas Safe registered engineer qualified for the relevant work can carry out a gas safety check. Call us to book a local Gas Safe engineer for your property.

Need more help?

Speak with our team and let us do the job.

Book a Gas Safe Engineer

Need a Gas Safe engineer in London for a boiler repair, installation or heating issue? OnSite Contractors & Plumbing provides 24/7 engineers across Greater London, with a 40-minute arrival time.

Call us today to book an engineer near your location and get your gas or heating issue fixed.