Endorsed by Which?

GMH Gas Maintenance Heating Ltd

5.0

32 Reviews

Opening Hours
Today - 08:00–17:30
  • Monday 08:00–17:30
  • Tuesday 08:00–17:30
  • Wednesday 08:00–17:30
  • Thursday 08:00–17:30
  • Friday 08:00–17:30
  • Saturday - Closed
  • Sunday - Closed

About

GMH Limited has been operating for 14 years with over 20 years experience in Heating and Plumbing. All of our Engineers are fully qualified and are Gas Safe registered as well as keeping up to date with Worcester Bosch Accredited Courses.

We provide a polite friendly service where no job is too small, from the service of a boiler to a complete heating and hot water system. We also understand that reliability is key and work with people on all Budgets and aim to carry out work with the minimum of disruption for our customers at all times.

Offering a professional experienced service the majority of our work comes through recommendations from existing customers and we are always happy to provide references of work carried out.

For further information or if you need an estimate please contact us on 01737 216111 or by e-mail gmhltd33@gmail.com providing your name and contact details.

What we do

  • Heating contractors

    • Central heating systems (installation and servicing)
    • Oil fired heating equipment
    • Immersion Heaters
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Gas safety testing and inspection
    • Radiators and central heating
    • Underfloor heating
    • Gas cooker installation
    • Gas emergencies
    • Immersion Heaters
    • Power flushing
  • Plumbers

    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
    • Emergency plumbing services
  • More Services

    • plumbing

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

5.0
32 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
Excellent service and communication throughout from GMH ltd. Highly recommend!!
Customer Service
Quality
Value
GMH recently dealt with a leak for me - this was the 2nd time I had engaged GMH on a job. From the initial investigation through to the resolution and required fixes Gary was excellent. The consistent communication and methodical approach from Gary on a very tricky job gave me confidence throughout and they did everything they said they would during the different stages of the work. I can absolutely recommend GMH.
Customer in Stockton-on-Tees Posted on 07/12/2025 , work completed 05/12/2025
Plumbing at it's best
Customer Service
Quality
Value
I've use GMH Ltd for a few years now. They were originally recommended to us by a family member so when we needed a new combination boiler I thought we would try them out. Recently we have moved into a very old house which needed a complete overhaul of the water tanks as the house had no water pressure. With both jobs GMH were fantastic and the end result was faultless. The guys who did the fitting were friendly, knowledgeable and took time in explaining the process of the work. I would certainly recommend GMH LTD for any plumbing and heating work.
Customer in Greater London Posted on 19/11/2025 , work completed 31/10/2025
Gas Fire Service
Customer Service
Quality
Value
Gary from GMH Ltd came yesterday to service my gas fire. He did a brilliant job and even got the ignition working again. I would highly recommend him and his company.
Customer in Surrey Posted on 03/10/2025 , work completed 02/10/2025
Excellent Service again !!
Customer Service
Quality
Value
I have been using these gas and central heating engineers for many years. Totally reliable and quick and easy booking service with their receptionist Mandy. Very efficient service from all the engineers who know their stuff who are very professional and knowledgeable. Gary the owner is also very helpful
Customer in Greater London Posted on 15/04/2025 , work completed 11/04/2025
Job well done
Customer Service
Quality
Value
Everything done in an efficient, courteous and timely manner. Very polite engineers who worked well with the engineers who were installing new gas mains in the vicinity.(Could easily have been a difficult situation.) Overall we are very, very pleased and now have a new boiler working very well indeed.
Customer in Surrey Posted on 03/10/2024 , work completed 20/09/2024
Boiler Service
Customer Service
Quality
Value
Yearly boiler service found our boiler needed several replacement parts. Gmh engineers went over and above, throughout the day to pick up the new boiler parts to insure by the end of the day we had hot water and fully functioning boiler. Thanks Gary and Harry as usual great service.
Customer in Surrey Posted on 26/06/2024 , work completed 24/06/2024
Highly recommend for boiler installation
Customer Service
Quality
Value
Gary Horton had serviced my back boiler for several years and I was impressed by his attention to detail and knowledge. I therefore had no hesitation in asking him for a quote to remove the old boiler and have a condensing boiler installed in the new position in the Garage. The work also involved replacing an old radiator in the Kitchen and also putting in an extra one in the Lounge. The system was power flushed and left running with an inhibitor. The team arrived promptly each day and worked well and efficiently. The installation went smoothly and the team was considerate and thoughtful throughout. I will be using them for the annual boiler service and I have no hesitation in recommending this company.
Customer in Surrey Posted on 01/03/2024 , work completed 14/02/2024
Top Job
Customer Service
Quality
Value
Used Which Trusted Traders to find a local CH company to replace a CH motorised valve with leaky connection and discovered GMH Ltd with great reviews. After exchanging a couple of emails with Mandy in the office and sending a photo of the problem, I received a competitive quote and an appointment was made for a couple of weeks later. Harry arrived promptly on the day with the parts and completed the job without faff or drama. I plan to use GMH for all future CH and plumbing work. I thoroughly recommend GMH Ltd. Which Trusted Traders is a great platform to find quality businesses.
Customer in Surrey Posted on 12/12/2023 , work completed 08/12/2023
I would thoroughly recommend when installing a new boiler
Customer Service
Quality
Value
GMH were amazing! On the days the new boiler was being installed, they arrived at the arranged time every day, minimal amount of mess and noise and fuss, very helpful information from the main engineer when installing the app, the boiler works beautifully and the installation work looks great.
Customer in Greater London Posted on 25/09/2023 , work completed 20/09/2023
Excellent and efficient
Customer Service
Quality
Value
GMH gave a clear and detailed quotation for installation of combi boiler to replace conventional central heating boiler. Quote was prompt and replies to a couple of queries were also very quickly responded to. Work involved removal of hot water tank/and associated pipework as well as draining of cold water tank and removal of pipes in loft. New pipework was installed to adapt central heating and hot water to new system. Gary and his team arrived promptly, worked solidly over the two days, gave clear explanation if I had any questions. A really efficient team. I have now booked them for a smaller job and will use them for annual service. I would recommend them highly.
Customer in Surrey Posted on 13/08/2023 , work completed 27/07/2023