We deliver professional Air Conditioning services throughout London 24/7.
Reliable Air Conditioning Solutions in London – Expert Installation, Maintenance & Repairs. Stay Cool & Comfortable Year-Round.
When the temperature rises, reliable air conditioning makes all the difference. At Onsite Contractors and Plumbing Ltd, we provide expert air conditioning installation, servicing, and repairs in London for both domestic and commercial properties.
Whether you need a new system installed, an upgrade, or maintenance for your current unit, our experienced engineers deliver solutions designed for comfort, efficiency, and reliability. From split systems to full central air conditioning units, we handle all makes and models with precision and care. Searching for air conditioning near me?
Our London-based team offers fast response times and professional service you can trust. With a strong focus on energy efficiency, safety, and performance, we make sure your air conditioning system runs at its best all year round. Call us today to book your air conditioning London service and keep your environment cool, fresh, and comfortable.
A properly installed and serviced AC reduces energy bills and keeps your space comfortable.
Filters out dust, allergens and pollutants for healthier indoor air.
Regular servicing prevents breakdowns and costly replacements.
Enjoy a consistent temperature at home or work, no matter the weather.
EXCELLENT Based on 145 reviews Posted on 1 AlambyTrustindex 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 MessinaTrustindex 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 ParviziTrustindex 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 KatzTrustindex 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 Dejnek-LoweTrustindex 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 TRIPATHITrustindex 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 BoodaTrustindex 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 UrsuTrustindex 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.
Don’t let a faulty system leave you struggling in the heat. Our engineers offer quick, professional air conditioning repairs in London, restoring your comfort without delay. With years of experience and fast response times, we’re the trusted choice for air conditioning services near me.
Contact us now for same-day repairs and keep your system running smoothly all summer long.
Even if you don’t find your area above, we are expanding everywhere in Greater London, so call us we can help!
Air conditioning systems should be serviced at least once a year to keep them running efficiently and to prevent breakdowns. For residential systems, one annual service is usually enough, ideally before the summer months when the unit will be working hardest. Commercial or heavily used systems may need servicing twice a year typically before and after the main cooling season.
During a service, the engineer checks and cleans filters, coils and drains, makes sure refrigerant levels are correct and tests that all components are working properly. Regular servicing not only helps your AC run more efficiently but also extends its lifespan and keeps energy use down.
Ignoring maintenance can lead to poor cooling, strange smells, higher energy bills and even complete system failure. Dirt build-up and blocked filters are the most common causes of reduced performance and both can be easily avoided with routine servicing.
A well-maintained air conditioner will keep your home or business cool, quiet and reliable throughout the year. If your system hasn’t been serviced in over a year, it’s a good idea to book an inspection to make sure it’s still running safely and efficiently.
There are several clear signs your air conditioner might need repairing. The most common one is when the system isn’t cooling properly either it’s blowing warm air, taking longer to reach temperature, or the airflow feels weak. Unusual noises such as rattling, buzzing or grinding often point to loose or worn parts inside the unit.
You might also notice bad smells when the system starts up, which can indicate mould, a blocked drain, or electrical issues. Another warning sign is water leaking from the indoor unit, often caused by a blocked condensate line. Rising energy bills can also mean the AC is working harder than it should, usually due to a refrigerant leak or dirty filters.
If the system keeps turning on and off (short cycling), that’s another sign something isn’t right. It could be a faulty thermostat, low refrigerant or a compressor problem.
Any of these symptoms mean it’s time to call a qualified HVAC engineer to inspect the system. Catching faults early prevents bigger issues later and helps avoid complete breakdowns when you need cooling most.
Yes, air conditioning can be installed in older properties without any problem. Modern systems are designed to be flexible and can fit into buildings of almost any age or style, even those without existing ductwork.
If you live in a listed or conservation property, we can advise on options that meet local regulations and aesthetic requirements. Discreet outdoor units, wall-mounted indoor units, or concealed ceiling cassettes can all be fitted to suit the building’s layout and design.
Our engineers carefully plan each installation to protect the property’s structure and finish. We also handle the electrical work, refrigerant piping and final testing to ensure everything runs safely and efficiently.
Yes, we provide emergency air conditioning repair services for situations where your system breaks down unexpectedly or stops cooling properly. Whether it’s a complete failure, an electrical fault, or a leak our engineers can respond quickly to get the system back up and running.
We understand that AC problems often happen during extreme heat or when you need cooling most, which is why we aim to restore comfort as fast as possible. When you call, we’ll ask for details about what’s happening such as error codes, noise, or lack of airflow so we can send the right engineer with the right tools and parts.
In most cases, we can diagnose and fix the problem on the first visit. If specialist components are needed, we’ll make the system safe, explain the issue clearly and arrange a follow-up repair as soon as parts arrive.
Our team handles all major air conditioning brands and systems, including wall-mounted, ceiling cassette, ducted and VRF units. All work is carried out by certified HVAC professionals who follow current safety and environmental regulations.
Ready to stay cool and comfortable? Our expert team at Onsite Contractors and Plumbing Ltd provides professional air conditioning installation in London tailored to your property. Whether for your home or workplace, we design and install systems that deliver maximum efficiency and comfort.
Call us today to arrange your installation and enjoy reliable cooling when you need it most.
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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