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South Thames Gas logo, heating engineer in London

South Thames Gas

3.9(15)Brixton, Lambeth, London  •  APHC

Heating work

About

South Thames Gas is a heating engineer based in Brixton, London. They repair and service boilers, install new boilers, carry out power flushes, fit underfloor heating and repair leaks, and they install showers and wet rooms. They take on domestic and landlord work, offer free quotes and emergency callouts, and guarantee their work. Customers say they are friendly, knowledgeable and tidy, with clear quotes and good communication.

Services

Reviews

3.9

South Thames Gas handles boiler installations, servicing, repairs and pipework, and many customers describe the staff as friendly and professional. Several reviewers say the engineers seemed experienced and knew their work. Some mention clear quotes and communication, and a few say the work was tidy and careful. However, one reviewer said a boiler drip was not properly diagnosed, the wrong pipe was turned off and their complaint went unanswered. Another said a boiler leak continued after a repair, a pressure relief valve was not replaced and calls went unanswered. A third reported poor communication and a long wait for a boiler service report.

CH
CharlotteOct 2026 · Google

This company fitted new gas pipes for me (together with a couple of smaller jobs). The engineer was very experienced and communications about cost, and the options available to me, was transparent. They did a really good job for a fair price. I’ll be getting them back to install a new radiator. They were reassuringly professional and reliable, unlike many firms/tradesmen I have had the misfortune of dealing with during the refurbishment of my flat.

MW
Michael W.Jun 2026 · Google

Very professional, respectful and caring company. Donna helped organise everything and was very helpful and a joy to speak with. Michael the engineer is clearly very experienced, helpful and knew what he was doing. I am very assured that the workmanship is of a high quality. They registered the works correctly. I found them on the Worcestershire Bosch list of accredited providers and as a customer I clearly experienced their knowledge of the boiler and installation.

MB
M B.Apr 2026 · Google

Terrible - don’t use. They came out. Found the drip. Couldn’t say what part it was. Couldn’t say how they can fix it. Said it would cost a lot. Said they would order the part. In the meantime stuck a plastic bag inside the boiler to protect the electrics until i raised safety concerns. Then turned off the wrong pipe leaving me to actually turn off the water. Failed to respond to my complaint

SB
Sandan B.Mar 2026 · Google

We had a leak from our boiler. South Thames Gas came out to look at it and replaced the auto airvent. That was mid-February. Tried to contact them to do a gas safety check but they haven't been answering their phone since them. Today I found out why. The leak is still continuing and the pressure relief valve wasn't changed. He did half the job basically. I think the worst part is them not answering the phone

NL
Nicky L.Apr 2025 · Google

I had a new boiler installed and was really pleased with the service. The engineer arrived on time, completed the job within the agreed budget, and took the time to show me how to use the controls. He was also very clean and tidy throughout. Would highly recommend.

Area

Brixton, Lambeth, London, SE24

Areas covered

Anerley, Battersea, Balham, Camberwell, Catford, Crystal Palace, Dulwich, East Dulwich, Herne Hill, Nine Elms, Peckham, Penge, Rotherhithe, South Croydon, South Norwood, Stockwell, Streatham, Tooting, Upper Norwood, Walworth, West Norwood, Wimbledon, Woolwich

Opening times

  • MondayOpen 24 hours
  • TuesdayOpen 24 hours
  • WednesdayOpen 24 hours
  • ThursdayOpen 24 hours
  • FridayOpen 24 hours
  • SaturdayOpen 24 hours
  • SundayOpen 24 hours

Additional information

  • APHC
  • Emergency call-outs
  • Free quotes
  • Domestic work
  • Landlord work
  • Work guaranteed

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