The 5 best HVAC companies in London that will keep your space comfortable year-round
London’s weather can be all over the place—one minute you’re bundled up in a sweater, and the next, you’re regretting not turning on the AC. That’s why a trustworthy HVAC company isn’t just nice to have, it’s a lifesaver!
Truth be told, while many HVAC experts get the job done, some go above and beyond.
To save you from endless Googling, we’ve handpicked the most trusted HVAC companies in London that know exactly how to keep your space at the perfect temperature.
Whether you want your office to be warm and toasty in winter or your home cool and breezy in summer, these companies have your back. Let’s find the perfect HVAC team to ensure your comfort no matter the season!
How much does an HVAC cost in London?
The cost of installing an HVAC system in London ranges from £1,000 to £5,000, depending on the size of the room or area being cooled. Smaller rooms cost closer to £1,000 and larger spaces reach up to £5,000 or more for a whole house system.
1. Air Options Ltd
Address: 9 Devonshire Square
Phone: +44 20 7127 4686
Business hours: Monday-Friday, 8:30 AM to 5:00 PM
Air Options’ team of fully qualified and accredited mobile engineers takes pride in delivering reliable, on-site service. May it be just one room or an entire building, they make sure your HVAC needs are met with professionalism and care.
Customers often praise them for being quick to respond, knowledgeable, and attentive—qualities you definitely want in an HVAC provider. They’re also big on sustainability, installing the latest energy-efficient systems to help you cut costs.
One of the notable advantages of Air Options is their price promise, which offers you quality workmanship at a budget-friendly price. This is available across all air conditioning services and includes one-off fixes, ongoing servicing packages, and new installations.
However, there’s a catch: to qualify for the price promise, your business must be Air Options-accredited. This means you have to match the company in terms of standards, service level, and availability.
Another drawback is that while they offer services to both commercial and residential clients, some of their services are more tailored to commercial needs. So if you’re a homeowner looking for a small-scale HVAC solution, you might find fewer options.
Friendly and professional all throughout
“Super happy to have come across Air Options Ltd, what a fantastic company to work with. They have been extremely friendly and professional throughout, providing unbelievable service to customers and suppliers alike. Everyone in their team has been great to deal with including Wayne, their director. Special mention goes to Eilish for being so attentive throughout the time I’ve worked with them – A real credit to the company! I’d highly recommend Air Options to anybody needing HVAC services in South East.”
- Sam Rogers, Google Review
Engineers are great at what they do
“We have worked with air options for many years. They installed air con in our previous office and we have continued our maintenance with them over the years since. The engineers are all lovely and great at what they do and the office team are quick to respond and flexible with visit bookings.”
- Ellie Robertson, Google Review
2. Aclima London
Address: 129 Station Rd
Phone: +44 20 3962 2229
Business hours: Monday-Friday, 9:00 AM to 6:00 PM
One of the standout features of Aclima London is their commitment to integrating smart technology into HVAC systems. This means you can enjoy advanced, energy-efficient, and customizable climate control solutions tailored to your needs.
Customers often praise Aclima London for their professionalism and reliability. The skilled technicians are known for their expertise and dedication to ensuring client satisfaction, may it be a simple repair or a complex installation.
Plus, with a team of F-Gas certified technicians, you can be sure that air conditioning installations and heat pump setups in your space are handled with the utmost expertise and safety.
Also, they prioritize balancing quality with affordability by offering competitively priced services.
However, it’s worth noting that Aclima London’s operating hours are Monday through Friday, 9:00 AM to 6:00 PM. This schedule might not be ideal for those who require services outside of these hours or during weekends.
Additionally, it’s always a good idea to double-check if they provide exactly what you’re looking for. This is because some specialized services, like emergency repairs or specific brands of air conditioning systems, may not always be available or could require scheduling in advance.
Always there for any need
“I own a big property agency , after years of dealing with unresponsive HVAC companies, I tried Aclima London Service after a friend recommended, Happy I found them Professional and always there for any need wether it’s installation Maintenance or an Urgent repair!”
- Morris Solaimani, Google Review
Sterling job installing aircon units
“Aclima has done a sterling job putting in air con units in my community centre. They were clean and left the building in the state they found it in. Work was done as agreed and within the timeline that was agreed! I couldn’t have asked for a more friendly and polite team. I looked forward to meet them and having a chat. It was a pleasure and a joy!”
- Lukasz Konieczka, Google Review
3. Hamilton Air Conditioning London
Address: Churchill House, 120 Bunns Ln
Phone: +44 20 8202 4540
Business hours: Monday-Saturday, 8:00 AM to 6:30 PM
Specializing in both residential and commercial spaces, Hamilton Air Conditioning offers proven and tailored HVAC solutions for every client.
This is evident in their extensive range of air conditioning systems, including split and multi-split systems, ducted units, and ceiling cassettes. Not to mention their wide range of services, from installations and maintenance to repairs.
Another feature that makes Hamilton Air Conditioning stand out is their commitment to quality. Their collaboration with top-tier brands like Daikin, Mitsubishi, and Fujitsu ensures that the systems they install are both efficient and durable, backed by a 5-year warranty.
Customers frequently praise the company for their professionalism and prompt service. During our interviews, many highlighted the team’s friendly demeanor and efficient installations, with most noting significant improvements in their indoor comfort.
One thing to keep in mind, though, is that while they offer 24/7 customer support, the actual service hours for installations and maintenance usually align with their standard business hours. So it’s advisable to confirm the availability of emergency services during off-hours.
Very professional, punctual, and neat
“Now a repeat customer, three years ago Hamilton replaced our heating with a five-room heat pump system and it’s never missed a beat. Matt and his team have serviced it every year, and continue to be very professional, punctual and neat and tidy. We were so happy with it we’ve had another one room split system fitted. Mario from Matt’s team is a delight, very friendly, neat tidy, conscientious, and leaves such a lovely finish. Can’t recommend them highly enough. Thank you.”
- James Shaw, Google Review
A ducted AC unit exactly as promised
“I can’t recommend Matt and his team highly enough. They installed a ducted AC unit for me which required significant ceiling (and roof) work and they got it done in a few days and on time. They were very professional, punctual, patient (I had lots of questions) and got it all done exactly as promised. So relieved that I chose to work with them for this project. Thanks again Matt!”
- Shadi Iskandar, Google Review
4. Smart Air Services
Address: 160 New River Cres
Phone: +44 7411 514074
Business hours:
- Monday-Thursday: 7:00 AM to 5:00 PM
- Friday: 7:00 AM to 4:00 PM
- Saturday: 8:00 AM to 3:00 PM
Smart Air Services Ltd is a trusted, family-run business with a decade of experience in the heating and cooling industry. They prioritize your air quality by delivering expert air conditioning repair, installation, and indoor air quality checks.
They also specialize in heat pumps, cellar coolers, fridges, and freezers, making them a one-stop shop for all your cooling needs.
Whether you need a quick fix for your AC or a brand-new ventilation system, their team of certified professionals ensures the job is done right.
Clients appreciate the quick response times and thorough workmanship, contributing to why they’re a trusted HVAC company. Plus, they offer 24/7 emergency call-outs, so you’re never left sweating in a crisis.
Another advantage of choosing Smart Air is their competitive pricing. They see to it that you get the best value for your money by delivering smooth, efficient installations and repairs without cutting corners.
On the downside, their website lacks clear pricing details, so you’ll need to reach out directly to get a quote.
Smooth and hassle-free installation
“Exceptional service! Our new heat pump works perfectly and has made such a difference in maintaining a comfortable temperature at home. The installation was smooth and hassle-free.”
- Savanna Robbins, Google Review
Quick and professional AC repair
“Had a wonderful experience with Smart Air! My AC repair was handled quickly and professionally. The technician explained the problem clearly and offered different repair options. Highly recommend their services!”
- Brian Turner, Google Review
5. M & K Heating and Air Conditioning
Address: 28 Adelaide St
Phone: +1 226 781 7012
Business hours: Everyday, 24 hours
One of the biggest advantages of M&K Heating and Air Conditioning is their team of Right Time™ certified HVAC technicians.
This means they aren’t just trained once and sent out into the field—they’re continuously trained, ensuring they stay up to date with the latest technology, tools, and techniques.
What’s more, they offer 24-hour service with no extra charges for weekends, holidays, after-hours, or emergency repairs.
Beyond service, they also work with some of the biggest and most trusted brands, like Lennox, ensuring that any installation is built to last. It’s no wonder customers consistently praise their professionalism and quality workmanship.
However, while they install top brands like Lennox, they may not carry every HVAC brand, which could limit options for customers with specific preferences. Also, since they offer 24/7 service at no extra cost, high demand during extreme weather conditions could lead to longer wait times.
Great customer service experience
“We are SO happy with M&K. We woke up Tuesday morning to no heat! We had another company come and assess the situation, and we needed to replace our very old furnace. We wanted to get some quotes, so we also called M&K to come. They were there Tuesday afternoon and told us they could have a new furnace installed the next day-so that is why we ultimately went with this company. We have been so happy with their customer service! Blaine and his assistant were amazing-so friendly and understanding. They kept our house clean, worked quickly and answered all my questions. We will absolutely recommend this company.”
- Marci Gall, Google Review
Professional in every way
“When my furnace unexpectedly needed to be replaced, M&K was recommended to me by friends. My experience with M&K was outstanding. From the initial consultation/ estimate with Phil to the installation of my furnace, humidifier and a/c unit, it was very professional in every way. Blaine and Jacob arrived on time, did a fantastic job installing, explaining/answering questions and tidying up. I am very grateful for the overall experience and the Lennox products. I would highly recommend M&K as they are terrific to deal with and go over and above to ensure customer satisfaction. A five star experience!”
- Marcia Robson, Google Review