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H3GS Heating & Cooling

Domestic Air Con Install London

Cool Homes, Made Easy

Fully Accredited

Gas Safe Registered

350+ 5 Stars

Google Reviews

9.67/10 Rated

200+ Checkatrade Reviews

Fully Qualified

Gas Safe

350+ 5 Stars

Google Reviews

9.67/10 Rated

200+ Checkatrade Reviews

Local Experts

10+ Years Experience

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Benefits

Benefits of Domestic Air Con Installation

Air conditioning keeps your home comfortable through the warmer months, and many modern systems provide efficient heating too, giving you year-round use from one installation. A properly fitted system runs quietly and efficiently, without the noise or performance issues that come from a poor installation. It’s a particularly practical upgrade for top-floor flats or rooms that struggle to stay cool.

What Our Customers Say

Read what some of our customers have to say about the excellent work we do.

Posted on Google Google
Andrei A profile picture
Andrei A
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Amir and his team did a great job replacing my boiler, and identified and fixed some other key safety issues with our gas flues that had not been picked up in previous gas safety inspections. Very good communication, transparent pricing and high quality work - would definitely recommend them!
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Carmen Martinez profile picture
Carmen Martinez
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Amir and Hamed made a fantastic job in my flat. I needed to replace my old vented water cylinder by a new unvented one. The espace was quite tight and I also wanted to accommodate the washing machine in the same area. They managed to fit everything! Really happy with the result and the communication. Totally recommended. Really well done job and on time.
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dave pasola profile picture
dave pasola
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We have used H3GS to install a new boiler and also an upgrade on the gas pipe run. On both occasions they have delivered a great service within cost and time. They work hard, tidily and very respectfully of the customer and their needs. I have no hesitation in recommending them to anyone who needs heating work done. They are also very trustworthy and can be left alone in a house.
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Toby profile picture
Toby
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H3GS have completed a few different jobs for us over the past couple of years, including sealing our heating system, servicing our boiler and replacing a motorised valve that was letting through. I can highly recommend H3GS. Amir is really friendly, professional, responsive and reliable. All of the work has been clearly explained and costed beforehand, and carried out on time and within the agreed budget. Thanks very much !!
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althea McCourt profile picture
althea McCourt
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We appreciated H3GS’s prompt response to our urgent pipe leak. Amir quickly identified and diagnosed the problem, and the team carried out the repairs efficiently and professionally. They were also very considerate of our elderly mother who was at home during the work. We would be happy to recommend H3GS to others.
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Iulian Gelepu profile picture
Iulian Gelepu
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Very quick, efficient and professional.
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Aziz Abdul-Malik profile picture
Aziz Abdul-Malik
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I have used H3GS a few times now. For the first time, I had an emergency and they were quick to review the pictures and videos I sent them to determine what the likely issue was. I was fortunate that they were able to do the repair on the same day. I had another issue with my boiler due to a leak and they were quick to advise me about the possible issues with the boiler as well as the danger that the boiler was in due to it breaking through the floor. They were able to fix the problem within a few days as it wasn't a straightforward fix. Every time I have used them, there has always been a preliminary assessment via pictures and videos, which has helped them analyse the issue in the first instance to reduce the delay on an onsite analysis. This has meant that they have arrived at the job prepared. Amir's communication is always polite and concise and I have always received a prospective quote for the job once an onsite analysis of the problem has been done. I highly recommend them and will continue to use them for any future plumbing problems that I have.
Posted on Google Google
Felicia Samuel profile picture
Felicia Samuel
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Absolutely amazing company! We have been using them since they installed our boiler. They service our boiler annually and we have NEVER had any problems. If you want an efficient, friendly and professional service this company is the one to choose 👌🏾
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Birju Prajapati profile picture
Birju Prajapati
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Excellent comms, clear pricing, efficient work. Will definitely be using them again. Thanks guys
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Leopold Oakes profile picture
Leopold Oakes
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Fast and professional service. Will use again in the future.

H3GS Heating & Cooling

Our Domestic Air Con Installation Process

We visit your home to look at the space, discuss what you’re hoping to achieve, and work out where units and pipework can be fitted with the least disruption. From there, we recommend a system that suits your property and budget. Our engineers handle the full installation, from mounting the units to running pipework neatly out of sight, then test everything and show you how to get the most from the system.

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Our Services

Why Londoners Choose H3GS Heating & Cooling

Recommendations Suited to Your Home

We don’t push a one-size-fits-all system, we fit what actually suits your space.

Tidy, Considerate Fitting

We take care to keep disruption and mess to a minimum throughout the installation.

Experience Across London Property Types

From period flats to modern builds, we know how to work around the quirks of London homes.

Payment Options to Suit You

Spread the cost with financing if paying upfront isn’t ideal.

Book Your Air Con Installation

Ready to keep your home comfortable all year round? Get in touch with H3GS Heating & Cooling & Cooling for a free consultation and quote.

FAQs

How long does a domestic air con installation usually take?

Most residential jobs are completed within a day, though this depends on your property layout and the system chosen. We’ll confirm a timeframe once we’ve seen the space.

Modern units are built to run quietly, and we also think carefully about where we position them to keep any noise well away from windows and outdoor seating areas.

Many of the systems we install offer efficient heating as well as cooling, so you can get year-round use out of a single installation.

Most domestic installations don’t require it, though there can be exceptions depending on your property, such as listed buildings or certain flats. We’ll flag anything relevant during our visit.

It depends on the system and the layout of your home, so we’ll give you an accurate quote after seeing the property rather than a rough estimate.

Yes, financing is available with manageable monthly instalments if you’d rather not pay the full amount upfront.