T N G Services Ltd

We use TNG Services Ltd as a trusted contractor for our customers across Hertfordshire, and they consistently deliver excellent results on plumbing, heating, and gas projects. The team is professional, reliable, and highly knowledgeable, always completing work to a high standard while maintaining excellent communication throughout. Their attention to detail and commitment to customer satisfaction give us complete confidence when recommending them to our clients. Whether it’s routine maintenance, repairs, installations, or gas-related works, TNG Services Ltd provides a dependable and efficient service every time. We would highly recommend TNG Services Ltd to anyone looking for a trustworthy plumbing, heating, and gas contractor in Stevenage, North London and Hertfordshire.

We contacted TNG Services Ltd after discovering a leak from our Vaillant boiler. Tomas arrived promptly, quickly diagnosed the issue and carried out the necessary repairs to stop the leak and get everything working correctly again. During the visit Gabriel identified that the electrical connection to the boiler via the fused spur had not been installed correctly. He made the necessary safety corrections and explained everything clearly. Very professional, knowledgeable and thorough throughout. It’s reassuring to find an engineer who takes the time to make sure everything is safe and working properly. Highly recommended for Vaillant boiler repairs and heating services.

Used TNG Services recently for some electrical works in the garden including making good afterwards. Really impressed with the overall service from start to finish. The old system issues were sorted quickly and professionally, and the electrical work outside was completed neatly with attention to detail. Everything was left tidy afterwards and the garden area was made good properly once the installation was completed. Tomas and his colleague were punctual, knowledgeable and explained everything clearly throughout the works. It’s difficult to find a company that can genuinely handle electrical works to a high standard, so I will definitely be using TNG Services Ltd again in the future. Highly recommend.

We contacted TNG Services Ltd regarding a water leak that had caused damage to our ceiling. We were given Tomas' details by a neighbour on our street who highly recommended his services, and we're very glad we got in touch. Tomas quickly identified the source of the leak, carried out the necessary repairs, and explained everything clearly throughout the process. Once the leak was resolved, the damaged ceiling was professionally repaired and made good, including filling, sanding, stain blocking, and repainting. The finish was excellent and you would never know there had been any damage. Very reliable, tidy, and professional service from start to finish. The work was completed to a high standard and the area was left clean and spotless. We would highly recommend TNG Services Ltd to anyone looking for plumbing repairs, gas works, electrical works leak detection, Thank you, Tomas!

Our Vaillant boiler started showing an F75 fault and kept losing pressure, so we contacted TNG Services Ltd. for help. Tomas arrived on time, quickly diagnosed the problem, and explained everything in a way that was easy to understand. The fault was repaired professionally, and while on-site, he also carried out a full boiler service to make sure everything was working safely and efficiently. The boiler has been running perfectly since, with no further issues. It’s great to find someone who is knowledgeable, honest, and takes pride in their work. We were very impressed with the service and wouldn’t hesitate to recommend TNG Services Ltd. to anyone needing boiler repairs or servicing.

I contacted TNG Services Ltd regarding an electrical issue within our boiler controls. We struggled to find engineers willing to take it on, but tng services Ltd quickly stepped in and got the boiler running again in our nursery school in Stevenage They’ve also scheduled a return visit to fully investigate and properly sort the controls, as the system has no wiring diagrams and it's not wired correctly. Very helpful, knowledgeable, and reliable — highly recommended! 👍

We hired TNG Services Ltd to carry out investigation works regarding unusually high electrical usage at our property. Tomas and Gabriel carried out a thorough fault-finding visit and quickly identified several issues contributing to the excessive energy consumption, including faults related to the heat pump setup and other electrical concerns around the property. Everything was explained clearly and professionally, with a logical approach to the investigation rather than just guessing. We really appreciated the detailed diagnostics and honest advice provided throughout the visit. We are now looking forward to having TNG Services Ltd back to carry out the recommended repair and improvement works. Very knowledgeable, professional and reliable service — highly recommended.

We booked TNG Services Ltd to repair our Vaillant boiler after it kept showing an F75 fault and losing pressure. Tomas arrived on time, carried out full diagnostics and quickly identified the issue causing the fault. The repair was completed professionally and at the same time the boiler was fully serviced, including cleaning, safety checks and combustion analysis. Everything was explained clearly and the boiler has been working perfectly since. Very knowledgeable, reliable and easy to deal with from start to finish. Would definitely recommend TNG Services Ltd for Vaillant boiler repairs and servicing.

I am delighted with the impeccable service provided by TNG Services Ltd for the installation of my Quooker 3-in-1 tap. From the outset, their team displayed exceptional professionalism and skill, ensuring a seamless installation process. The Quooker tap now functions flawlessly, offering instant boiling water, along with hot and cold options. I wholeheartedly recommend their services for anyone seeking top-notch Quooker 3-in-1 tap installation. Thank you, TNG Services Ltd, for a job well done! Kami Dawson

We booked TNG Services Ltd after seeing their YouTube video and realising our Quooker tap was overdue for a service. At the same time, we asked them to replace our integrated dishwasher and investigate an awful smell coming from the kitchen waste whenever we used the washing machine. Tomas and Gabriel arrived on time, quickly identified the issues and found that the dishwasher had been incorrectly wired by the previous kitchen fitter. He safely rectified the wiring connection and also corrected the kitchen waste pipe installation, which had previously been installed incorrectly and was causing the bad smell. The Quooker service was completed properly, the new dishwasher was installed perfectly, and everything was fully tested afterwards. Very knowledgeable, reliable and easy to deal with from start to finish. We would definitely recommend TNG Services Ltd for plumbing, heating and electrical works.

⭐⭐⭐⭐⭐ Called TNG Services Ltd out to repair a leaking solvent weld waste pipe at our s and s Branch in Mill Hill. The pipe had failed in two sections and was causing ongoing leaking issues. Tomas arrived promptly, identified the problem quickly and carried out the repairs professionally. Everything was tested properly afterwards and the area was left clean and tidy. Really happy with the service — reliable, knowledgeable and easy to deal with from start to finish. Would definitely recommend TNG Services Ltd for plumbing repairs and fault finding.

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I actually came across TNG Services Ltd after watching one of their YouTube videos about gas hob flames, and it immediately made me realise something wasn’t right with mine. The flame had that yellow/orange colour they mentioned, which I hadn’t thought much of before. I decided to get it checked, and I’m glad I did. Tomas came out promptly, inspected the hob, and explained clearly what was causing the issue and why it could be unsafe if left. He sorted it on the spot and made sure everything was burning correctly again. Really knowledgeable and honest service. It’s reassuring to find someone who not only fixes the problem but also educates you along the way. Highly recommend TNG Services Ltd if you’ve noticed anything unusual with your gas appliances.

I actually found TNG Services Ltd through a YouTube video they posted about Quooker tap issues, which described exactly what was happening with mine. It gave me confidence to reach out. Tomas attended my property in Radlett promptly and carried out a thorough service on the Quooker tap. He identified the cause straight away and explained everything clearly without any jargon. The difference afterwards was noticeable immediately — pressure and performance back to normal. Very reliable and knowledgeable. It’s rare to find someone who understands these systems properly. Would definitely use again and highly recommend to anyone having issues with their Quooker tap.

Thomasz did I really good job sorting the electrics in my house.

We contacted TNG Services Ltd for a boiler repair at our home in Radlett. They responded quickly and carried out an emergency repair without delay. Fast, professional, and reliable service — highly recommended! 👍

TNG Services Ltd carried out a full service on my Vaillant boiler and did an excellent job. Everything was checked thoroughly and explained clearly. The boiler is now running perfectly. Very professional, reliable, and knowledgeable service – highly recommended!

TNG Services Ltd responded quickly when I had a loud noise coming from my plant room. They identified a faulty circulation pump straight away and carried out a professional replacement. The new pump was installed with new valves and repositioned higher for easier access and future maintenance. Great workmanship, efficient service, and very knowledgeable — highly recommended!

TNG Services Ltd did a great job fixing my Ariston boiler with an E02 fault. The issue was diagnosed quickly and repaired efficiently. Everything is now working perfectly again. Professional, reliable, and highly recommended!

TNG Services Ltd did an excellent job unblocking my toilet. It was badly blocked, but they responded quickly and resolved the issue efficiently. Very professional, clean work, and great communication throughout. Highly recommended!

My toilet cistern was overflowing and causing a constant issue. Tomas responded quickly, diagnosed the problem straight away, and fixed it efficiently. Everything is now working perfectly with no more overflow. Fast, professional, and reliable — highly recommended!

TNG Services Ltd saved my day! I had badly blocked my sink waste, but they responded quickly and resolved the problem in no time. Fast, efficient, and very professional service. Thank you Again And I highly recommending Tng Services Ltd

Tomas Nepko of TNG Services Ltd carried out a full service on my Ideal boiler at my property in Watford. Excellent job — he identified low inhibitor levels in the system and topped it up to ensure everything is properly protected. The work was done efficiently, professionally, and with clear communication throughout. Highly recommended!

TNG Services Ltd did an excellent job repairing my Worcester Bosch boiler at my rental property in Mill Hill. The issue was diagnosed quickly, and the fan replacement was carried out efficiently with great attention to detail. Communication was clear throughout, and the whole process was smooth from start to finish. Reliable, professional, and highly recommended! 5 star

Thank you TNG Services Ltd for sorting out my Vaillant boiler so quickly! I was having issues with pressure loss and the F75 fault, but everything was diagnosed and repaired efficiently. The boiler is now working perfectly after the service. Great, reliable service – highly recommended!

I called TNG Services Ltd out shortly after I moved into my new flat, as the boiler wasn’t working properly and kept needing to be reset. Tomas responded quickly, identified the issue, and efficiently arranged for a repair through Vaillant since the boiler was still under warranty. Great service, prompt response, and very helpful throughout. Highly recommend!

Came to replace a tap. Always professional quick and clean! Great service

Great work. We had a leak and he came straight out to fix it. Was very professional

Thomas is a great guy. Good communication & professional. He helped us identify missing bonding for the gas meter. Would recommend.

Super happy with the work TNG did. Needed urgent help with my boiler and they came promptly and sorted it for me. Would recommend 👍🏽

I contacted TNG Service Ltd to investigate a loss of water pressure and issues with my underfloor heating. They quickly found and rectified the problem with the heating controls and replaced the faulty manifold. The team was professional, knowledgeable, and efficient throughout. Everything is now working perfectly — highly recommended for anyone needing reliable heating and plumbing services!

I recently had some repairs on my boiler and a service to make sure it was safe and ready for winter. Tomas has been great from start to finish. He came round to see the boiler and explained what needed to be done. Work has been done to a high standard and a very reasonable price. I definitely won't be looking anywhere else in the future when I need work done. Thank you

Had a new boiler installed in Stevenage by TNG Service Ltd and couldn't be happier with the service provided! The team was professional, efficient and kept everything tidy throughout the installation. The new boiler is brilliant and fitted to a high standard. They took the time to explain how everything works and had amazing customer service. Great workmanship and would highly,highly recommend.

Great service from TNG Service Ltd — professional, tidy, and efficient gas hob installation after our kitchen refit. Highly recommend!

Thomas was very professional and helpful with our boiler repair. Quick to respond every time. Thanks Thomas!

Excellent boiler installation by Tng Service Ltd — professional, tidy, and great attention to detail. Highly recommend!

We have worked with Tng Services Ltd. On a number of projects across Hertfordshire regarding subcontracted 1st and 2nd fix for plumbing and gas. Chris Marshall Best in Kitchens

Tng Service Ltd carried out my boiler service in Radlett and found the gas valve was leaking. They replaced it straight away and got everything working safely. Excellent, reliable service, I highly recommend.

"I recently had my boiler repaired by Tng Service Ltd, and I couldn’t be happier with the service.I would definitely recommend Tng Service Ltd

Excellent work and I highly recommend! Tomas is the best plumber I’ve known. Professional and knowledgeable. Elliot Jacobson Director Thamesown properties ltd

Very fast and effective. Better than British Gas

Fantastic plumber. Wouldn’t hesitate to recommend and only one we’d use in the future. Reliable and excellent communicator

Friendly, quick and efficient!!

I highly recommend TNG Services Plumbers! They are incredibly reliable and consistently deliver high-quality work. We've had to call them for leaks on a Sunday, and they responded immediately, which was a lifesaver. Tomas has been fantastic in maintaining our boiler and heating system, ensuring everything stays in top condition and preventing any breakdowns. They always leave the work area clean and tidy, and their communication throughout the process, from quote to completion, is excellent. If you're looking for trustworthy plumbing services, TNG is the way to go!

TL;DR: I highly recommend TNG Services for plumbing and electrical work, especially for complex systems like underfloor heating combined with radiators. After consulting three other plumbers who misdiagnosed and overcomplicated the issue, Thomas and Gabby not only provided the correct solution but also executed the job flawlessly and efficiently in just one day. They were professional, fair, and experts in their field. Full Review: I recently had TNG Services install a new boiler and optimize my heating system, and I cannot recommend them enough. Before finding TNG, I consulted three different plumbers, including a full-service company, for the issues with my heating system, which involved both underfloor heating and regular radiators. All three gave me similar feedback, misdiagnosed the problem, and unnecessarily overcomplicated the situation. It was incredibly frustrating. Thomas from TNG Services was a game-changer. He approached the issue with a fresh perspective, quickly identifying the root cause and offering a practical, effective solution. We wanted to separate the underfloor heating and radiator systems, allowing them to be controlled individually via Hive for better efficiency and cost savings. Unlike others, Thomas didn’t push for unnecessary work or upsell services. He focused only on the essential changes needed, which was incredibly refreshing. On top of that, TNG’s team is brilliantly skilled. While Thomas handled the plumbing side, his brother Gabby managed the electrical work, and the results were impeccable. Gabby not only separated and labeled all the conduits neatly but ensured everything was safe, functional, and tidy. Their coordination was seamless, and they completed the entire project—including boiler installation—in just one day, exactly as promised. What stood out most was their professionalism, fairness, and expertise, particularly in handling underfloor heating, which many plumbers shy away from. It’s rare to find a team that balances quality work with integrity, but TNG Services absolutely delivered on all fronts. If you’re looking for reliable plumbing and electrical experts, especially for complex systems, look no further than TNG Services. They exceeded all my expectations, and I’m confident they’ll do the same for you.

These guys came to my rescue last week just as the cold snap started. The boiler died and I had no heat. The guys managed to get the parts within a couple of hours and fitted them in the evening. Great guys that gave me great service.

Excellent service. Very efficient and professional, in the bathroom work carried out.

I was so impressed with this company they did a great job cleaned up after themselves. Will definitely use them again

Incredible service and results. Had new boiler and underfloor installed and maintained 20 years ago by another plumber, but never seemed to work properly. TNG found the issue, fixed and improved it, and it now works better than I realised it could! Had all electrical lights changed to LED and outside lighting and security, which is so effective. Pricing is really reasonable and is a pleasure to have these tidy men working in my house. Highly recommend.

I have used TNG Services for boiler installation and was quite satisfied with their work.The pricing was transparent and reasonable compared to other quotes I received. Overall, a good experience and I would recommend their services

Had Tomas over to sort out my boiler, and dude, he was on time! Super important for me because I’ve got a tight schedule. He’s chill but super professional too. Knew his stuff like the back of his hand and fixed the problem faster than I thought anyone could. Plus, he explained what was wrong in a way I could actually understand, which was awesome. Gave me some solid advice on keeping things running smoothly. He left the place clean, which honestly was a nice touch. Boiler’s been working like a dream since he left. Big thumbs up for Tomas, would totally call him again if I needed to.

Good job by Tomas for gas boiler service!

TNG Services Ltd. stands out for boiler servicing and advice, offering exceptional expertise and customer service. Their technicians are not only thorough in maintenance tasks but also provide valuable advice for prolonging your boiler's life. Fast, reliable, and professional, TNG Services Ltd. is a top choice for homeowners seeking peace of mind with their heating systems.

Very professional and great service

Excellent service by Tomas

TNG Services Ltd - Wiring, consumer unit upgrade & gas work carried out at my house & garage. Minimal disruption considering the works required. Professional attention to detail, kept me up to date with their, swift & tidy progress. TNG are now my Go To for any future works that may be required.

I recently used TNG Services to locate and then repair a leaking shower. The problem was much more complicated than expected and required a full shower enclosure replacement. Tomas and Gabi always kept me up informed of situation and always present appropriate options of work. They are extremely thorough, skilled and very tidy! They are always my first call when I have a plumbing or electrical problem and I wouldn’t hesitate to recommend them!

Tomas from TNG Services Ltd. deserves high praise for his swift emergency response and adept handling of my leaking Vailant boiler. His professionalism and efficiency in the repair were truly commendable ensuring a prompt resolution to the issue. Highly recommended for urgent heating emergencies. Richard FVS CCTV

I recently had my boiler serviced by TNG Services, and I cannot express enough how impressed I am with their work. I highly recommend TNG Services to anyone seeking outstanding professionalism, and customer service. Dusan