H3GS Heating & Cooling is a well-established and fast-growing company with more than 15 years of experience. We prioritize connecting with our community while delivering professional and dependable services to our customers and clients.
We want it to be as easy as possible for our customers to book in a service with us. Here’s how:
Answer a few quick questions about your home and circumstances
Select a boiler or other installation from a range of options.
Choose your preferred date and time for the installation.
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Andrei ATrustindex verifies that the original source of the review is Google.
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!Posted on Google![]()
Carmen MartinezTrustindex verifies that the original source of the review is Google.
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.Posted on Google![]()
dave pasolaTrustindex verifies that the original source of the review is Google.
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.Posted on Google![]()
TobyTrustindex verifies that the original source of the review is Google.
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 !!Posted on Google![]()
althea McCourtTrustindex verifies that the original source of the review is Google.
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.Posted on Google![]()
Iulian GelepuTrustindex verifies that the original source of the review is Google.
Very quick, efficient and professional.Posted on Google![]()
Aziz Abdul-MalikTrustindex verifies that the original source of the review is Google.
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![]()
Felicia SamuelTrustindex verifies that the original source of the review is Google.
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 👌🏾Posted on Google![]()
Birju PrajapatiTrustindex verifies that the original source of the review is Google.
Excellent comms, clear pricing, efficient work. Will definitely be using them again. Thanks guysPosted on Google![]()
Leopold OakesTrustindex verifies that the original source of the review is Google.
Fast and professional service. Will use again in the future.
From the moment you get in touch, our team will be helpful and ready to answer any and every question you might have.
Our experienced engineers have been assisting London residents with their heating, air-conditioning and plumbing systems for over 15 years.
We will make sure that your system is fit for the long term, letting you get through those colder months, stress-free.
H3GS Heating & Cooling & Cooling are experts in professional heating and cooling solutions, providing installations, servicing and repairs across London.
If you are interested in any of our services, please fill out the contact form below and a member of our team will be in contact ASAP!
H3GS Heating & Cooling provides a full range of plumbing and heating services across London and the South East, including boiler installations, boiler repairs, central heating installations, power flushing and routine maintenance for both residential and domestic properties.
Yes, all our heating engineers are Gas Safe registered, so you can have complete peace of mind that every job is carried out safely and to the highest standard by qualified professionals.
Absolutely. Our heating team is available for emergency repairs and boiler breakdowns, connecting you with an experienced emergency heating engineer as quickly as possible.
Yes. From new boiler installation to central heating services and annual servicing, we keep your system running efficiently, with competitive pricing and honest advice every step of the way.
Yes. H3GS Heating & Cooling & Cooling installs air-conditioning systems providing both heating and cooling for domestic properties across London.
Yes, our highly skilled engineers cover a wide range of plumbing and heating work, including leak detection and repair, hot water systems and unvented cylinders. Whether you need a local plumber for a straightforward job or a central heating engineer for a larger project, our professional team is on hand to help across London and the South East.