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When your boiler stops working, it can throw your day off completely. Cold radiators, no hot water, and the stress of not knowing what’s wrong. That’s where our boiler repair Mayfair service comes in fast, reliable, and professional.
We cover homes and flats across Mayfair, including W1J, W1K, and W1S. Whether your boiler has lost pressure, won’t fire up, or is making unusual noises, our engineers can quickly diagnose the problem and fix it properly. We don’t do temporary patches; we make sure the repair lasts.
Being local means we can often get to you the same day. When we arrive, we’ll explain the problem in plain English and outline your options. If it can be fixed immediately, we’ll do it there and then. Honest, efficient boiler repair in Mayfair from engineers who know the area.
Regular servicing keeps your boiler efficient, safe, and less likely to break down unexpectedly. Our boiler service Mayfair ensures your system is running reliably all year round.
We service properties across Mayfair, including W1J, W1K, and W1S. During a service, we inspect all main components, clean essential parts, test pressure and safety controls, and make sure your boiler is running efficiently. We also check for small issues that could turn into bigger problems later.
A serviced boiler can save energy, reduce bills, and extend the life of your system. We explain everything in simple terms and advise honestly if anything needs attention. Trusted boiler service in Mayfair from local engineers who care.
If your boiler is old or unreliable, a replacement could save you money and stress. Our boiler installation Mayfair service is straightforward and hassle-free.
We work across Mayfair, including W1J, W1K, and W1S, helping homeowners and flats choose the right boiler for their needs. We assess your property, discuss your heating requirements, and recommend a modern, energy-efficient boiler that fits your home and budget.
From removing the old unit to fitting and testing the new one, our engineers handle the entire installation safely and efficiently. Once done, we’ll explain how everything works and answer your questions. For professional boiler installation in Mayfair, our local team is ready to help.
No heating, no hot water, or your boiler just doesn’t sound right? Don’t leave it until it gets worse. We’re a local Mayfair boiler company and can get to you fast, often the same day.
From boiler repair and boiler servicing to full boiler installation Mayfair, we handle everything with clear pricing and no hassle. You’ll deal with a real local gas engineer.
A broken boiler at home can disrupt your day and cause stress. Our domestic boiler repairs Mayfair service focuses on fast, reliable solutions.
We cover homes and flats in Mayfair, including W1J, W1K, and W1S. Whether it’s no heating, no hot water, leaks, or error codes, we’ll diagnose and repair it efficiently. Our engineers are familiar with different property layouts and modern systems, which helps us work quickly without cutting corners.
We arrive on time, respect your home, and explain the problem in simple terms. If repair is feasible, we’ll fix it; if replacement is a better option, we’ll advise honestly. Trusted domestic boiler repairs in Mayfair, without the fuss.
For businesses, boiler problems can be costly and disruptive. Our commercial boiler Mayfair service helps offices, shops, and commercial premises keep running smoothly.
We cover W1J, W1K, W1S, and nearby areas. From routine maintenance to emergency repairs, we understand how important heating and hot water are for staff and clients. We’re experienced with commercial systems and work to all safety regulations.
Whether you need planned servicing or urgent repairs, we provide clear communication, fast response, and reliable solutions. For professional commercial boiler services in Mayfair, we’re the local team to trust.
Efficient Vaillant boiler repairs by Gas Safe engineers. Same-day callouts, genuine parts, and guaranteed service restoring warmth and comfort fast.
Expert Ideal boiler repairs using genuine parts. Fast diagnostics, affordable pricing and trusted engineers keeping your home warm and safe.
Trusted Corgi boiler repairs by qualified engineers. Quick response, safe service and long-lasting results using approved parts and expertise.
Professional Baxi boiler repairs with same-day service. Certified engineers ensure reliable heating, safety, and performance using genuine Baxi parts.
Fast, reliable Worcester boiler repairs by Gas Safe engineers. Genuine parts, same-day service, and guaranteed results to restore heating efficiently.
Fast, reliable Combi boiler repairs by Gas Safe engineers. Genuine parts, same-day service and guaranteed results to restore heating efficiently.
EXCELLENT Based on 145 reviews Posted on 1 ATrustindex 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 donePosted on Daniele MTrustindex 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 Shahram PTrustindex 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 youPosted on Hanna KTrustindex 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 Beata DTrustindex 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 YOUMITRA TTrustindex 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 Lala BTrustindex 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 Tudor UTrustindex 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 Joey BTrustindex 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.
Need a local, reliable expert? Our local gas engineer Mayfair service is fully Gas Safe registered and experienced in domestic and commercial systems.
We cover Mayfair, including W1J, W1K, and W1S. From boiler repairs and servicing to full installations, we handle every job professionally and safely. No call centres just a local engineer who arrives on time, explains the work, and gets it done right.
Most of our work comes from repeat customers and recommendations. For a trusted local gas engineer in Mayfair, call us today.
Even if you don’t find your area above, we are expanding everywhere in Greater London, so call us we can help!
Boiler not working, due a service, or thinking about a new installation? We’re local to Mayfair, know the area well, and can get to you fast often the same day.
From boiler repair to boiler servicing and full boiler installation in Mayfair, we keep things simple, honest, and affordable.
Being local means we can often attend boiler repair Mayfair call-outs the same day, especially in W1J, W1K, and W1S. Once on site, we’ll assess the problem fully and explain it in plain English. If it’s a minor fault and parts are available, we can fix it immediately. For more complex issues, we’ll outline options, costs, and timescales before starting any work. Our aim is to restore your heating quickly, safely, and efficiently.
We recommend boiler service Mayfair once a year. Annual servicing keeps your boiler safe, efficient, and reliable. During the service, we inspect major components, clean key parts, test safety controls, and assess overall performance. Regular servicing also reduces the risk of unexpected breakdowns and can save money on energy bills. We always explain what we’ve done and advise if any further work is required.
Yes, we work with all major boiler brands and types in Mayfair properties. This includes combi, system, and conventional boilers from Worcester Bosch, Vaillant, Ideal, Baxi, and others. Our experience allows us to diagnose faults quickly and carry out repairs safely. Even older boilers can usually be maintained effectively. If replacement parts are needed, we source them quickly and keep you informed throughout the process.
If your boiler is old, frequently breaking down, or struggling to heat your home, it may be time for a boiler installation Mayfair. We’ll always check whether repair is worthwhile first. If replacement is the best option, we’ll explain why and help you choose a boiler that suits your property and usage. A new boiler can improve efficiency, lower bills, and give peace of mind, especially during winter.
Yes, we work with landlords and businesses across Mayfair. For landlords, we maintain safe, reliable heating for tenants. For commercial properties, we provide repairs and servicing to minimise disruption. We cover W1J, W1K, W1S, and nearby areas. Whether it’s planned maintenance or urgent work, we offer fast, professional service with clear communication throughout.
All our engineers are fully Gas Safe registered and experienced in domestic and commercial boiler work. We’re also local to Mayfair, which means faster response times and a better understanding of property layouts. When you call, you’ll speak to a qualified engineer who arrives on time, works safely, and explains everything clearly. Our goal is reliable, stress-free service from start to finish.
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
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