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Trusted Traders

South Thames Gas Limited

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9 Reviews

Opening Hours
Today - 24 hours
  • Monday - 24 hours
  • Tuesday - 24 hours
  • Wednesday - 24 hours
  • Thursday - 24 hours
  • Friday - 24 hours
  • Saturday - 24 hours
  • Sunday - 24 hours


South Thames Gas is a Gas Safe certified company, a Worcester Bosch approved installer and all our engineers are highly professional and experienced.

We offer a high range of services for all your gas, boiler & central heating needs. We work extremely locally in the South London area and are able to provide you with emergency breakdown service!

We also carry out a complete range of plumbing services.

Please visit our website to find out more about our Company and how we can help you with your plumbing and heating needs.

What we do

  • Heating contractors

    • Central heating systems (installation and servicing)
  • Plumbers

    • Emergency plumbing services
    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
  • Boiler, central heating and gas engineers

    • Gas safety testing and inspection
    • Radiators and central heating
    • Underfloor heating
    • Gas emergencies
    • Power flushing
  • Bathroom fitters

    • Accessible bathrooms and showers
    • Bathroom design services
    • Bathroom refurbishment
  • More Services

    • boiler installation repair servicing
    • landlord certificates

Customer reviews

Why you can trust these reviews

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

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

9 reviews
Customer Service
Sort by
Boiler installation
Customer Service
Had a new boiler installed. Happy with the service and installation- quick response and the engineer went the extra mile to make sure we had hot water on the day and finished very late because of this. I also appreciated that the price was fixed and no hidden or extra charges that other companies suddenly quoted on the top of advertised rates.
Customer in Greater London Posted on 12/06/2020 , work completed 11/06/2020
No after care
Customer Service
I have had problems with the after care. The boiler was installed on September 11th and the engineer left a piece of equipment behind so came back to collect this the following day. I explained to him that the pressure had fallen quite a lot overnight, so there may be something wrong either with the boiler or the radiators (a leak in the system). He said that normally if there is a leak there tends to be water somewhere, and to ask my neighbour downstairs. There is no evidence of water anywhere and having asked my neighbour everything is apparently fine. Anyway 2/3 weeks later the pressure fell again. Two days ago (November 26th) I called the office, and the engineer now says that he had already checked the radiators (he didn't check all of them) and there was no water, and that it was a brand new boiler and the culprit is probably "a very small leak" somewhere but they are not coming back (so much for the 10 year guarantee) because he had already been here and everything was fine, and their guarantee only covers the boiler, not the leaks. So I adjust the pressure again, and it falls again in two days, by quite a lot. So if the leak is so small, how come the pressure falls again in just two days? And even if they don't cover the leaks, only the boiler, can they not come to check that the boiler is OK, and if it is not, then help me find the leak? I will have to go to another one in Crystal Palace.
Customer in Greater London Posted on 28/11/2019 , work completed 11/09/2019
The trader replied (on 12/12/2019)
Thank you for your comments. We welcome all feedback. I am sorry you feel that you had problems with our aftercare. Initially you informed our engineer the reason you replaced your original boiler was because it was old and loosing pressure Boiler installation: Sept 11 2019. Upon completion our engineer spent time checking the boiler, radiators and all the exposed pipe work. When we install a boiler on an old system, we make it clear that we are not responsible or liable for the existing system. We check the existing pipe work where it is accessible. The next day our engineer returned and checked the boiler and pipework and found no leaks. He said there may be a small leak in the existing system. He topped up the system. He informed you if it goes down again there must be a leak on the existing system and further investigation will be needed. You contacted STG on 26/10/19 and he returned on 29/10/19. He repeated all checks and found no leaks. The engineer informed there must be a leak on the existing system which will need further investigation. This would involve taking off boxing and lifting flooring where possible. This could be a time consuming job, and would be chargeable in addition to the cost of the boiler installation. We understand your frustration in this matter but the engineer did re-attend and found no leaks. He had identified that the leak is on the existing system. This needs to be investigated and is outside of the specification given.
100% Genuine
Customer Service
Honest, professional company. Pleasure to do business with.
Darren, London Posted on 25/06/2019 , work completed 25/06/2019
Customer Service
I was very pleased with the service provided. The plumbing engineer called out to me was patient, prompt and professional. I was also very satisfied with the administrive team who were also patient. I would recommend them and use them again.
Evren, London Posted on 06/06/2019 , work completed 06/06/2019
Great work and quick to get here
Customer Service
Our gas was turned off when the British Gas man who was fitting a Smart Meter found we had a gas leak. South Thames Gas were able to come out within a couple of hours and fix it. They were very professional and helpful and we were able to turn our central heating back on. I would recommend them unconditionally.
Rudy P Posted on 02/10/2018 , work completed 02/10/2018
trusted and quality service
Customer Service
I have used South Thames Gas a number of times and have always been completely satisfied with their work. The employee who comes is always helpful, cheerful and stays to complete the job whether it is to do with plumbing, the boiler or the central heating system. No job is too small: we had to call them in for a blocked sink recently and this was dealt with speedily. The office too is extremely helpful in organising the work and always keeps in touch if necessary.
Roy Collins, . Posted on 21/04/2018 , work completed 21/04/2018
Highly recommended gas contractor
Customer Service
Remove existing fan from Worcester Bosch 24iJr boiler and supply and fit new fan. The work was carried out promptly and the time of the resident's choosing. The repair was 100 percent effective.
Effra Housing Co-op, . Posted on 18/01/2018 , work completed 18/01/2018
Best plumbers and heating engineers we've ever had
Customer Service
We run a property business and Michael and Donna at South Thames Gas are the best plumbers and heating engineers we have ever had. On quite a few occasions over the years they have gone way above the call of duty and come to our rescue, like when our heating broke in very cold weather and when we have had serious leaks. We wouldn't use any other company, and Michael and Donna are two of the nicest people you could wish to meet. They are very honest and the work is of an excellent standard.
Lowry Newton Property, . Posted on 07/12/2017 , work completed 07/12/2017
Excellent installation and servicing
Customer Service
I needed a new boiler and South Thames Gas discussed with me the options available, arranged supply and fitted the boiler. They were helpful and efficient and I would have no hesitation in recommending them. They also are undertaking routine service visits on the boiler and again they are efficient and courteous
TK, . Posted on 30/08/2017 , work completed 30/08/2017