Endorsed by Which?

Stelfox Plumbing & Heating


20 Reviews

Opening Hours
Today - 08:00–21:00
  • Monday 08:00–21:00
  • Tuesday 08:00–21:00
  • Wednesday 08:00–21:00
  • Thursday 08:00–21:00
  • Friday 08:00–21:00
  • Saturday 08:00–21:00
  • Sunday - Closed

What is a Which? Trusted Traders Hertfordshire Trading Standards Approved Endorsement?

Which? Trusted Traders has partnered with Hertfordshire Trading Standards to create a Hertfordshire Trading Standards Approved endorsement. In addition to our standard trading standards assessment, this trader has had a DBS check and is subject to a Trading Standards intelligence check


Stelfox Plumbing and Heating.

I am gas safe registered engineer who specialises in call outs, plumbing repairs and installs. From boilers to bathrooms, cylinders to radiators. Leaking taps to blocked toilets we have you covered. I have over 12 years experience in plumbing and heating, having completed my level 3 NVQ in advanced plumbing in 2011.

I am highly experienced in the following:


Boiler repairs/servicing

Heating Systems






Power Flushing

Drainage Systems

I am extremely reliable and professional. Customer satisfaction is paramount and no job is complete until the customer is truly happy. I work to a very high standard ensuring any issues are fixed the first time round.

I have been highly recommended by customers and have references available upon request.

Look forward to working with you soon

Ciaran Stelfox

What we do

  • Plumbers

    • Emergency plumbing services
    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
  • Heating contractors

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

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

    • Accessible bathrooms and showers
    • Bathroom Installation
    • Bathroom refurbishment
    • Electric Showers
  • More Services

    • power flush

Customer reviews

Why you can trust these reviews

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20 reviews
Customer Service
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Excellent worker
Customer Service
Ciaran is a very professional Worker, he replaced 2 central heating radiators and He did an excellent job. He was punctual and left the site clean and tidy. I would highly recommend Ciaran if you want a job well done by a reliable tradesman.
Customer in Hertfordshire Posted on 10/01/2023 , work completed 22/11/2022
Another great job by Ciaran
Customer Service
Work done: 2 port zone faulty on hot water coil letting by when it should not. Isolation and partial drain down of the heating system. Existing 2 port zone valve unwired and removed and new 2 port zone valve supplied, wired and tested. We had a lot of plumbing and central heating work done earlier this year (2022) with Ciaran. During that work Ciaran noticed that the zone valve (as mentioned above) was letting by informing us that it was increasing our costs because of the malfunction. Ciaran returned and replaced the faulty valve. As usual he was punctual, informing us what time he would arrive, very polite as usual and did a neat and excellent job once again. He made sure everything was working correctly before he departed and he left the premises clean and tidy. I would not hesitate to recommend Ciaran to anybody that requires any plumbing or heating work. We will need further plumbing and gas work shortly for a new kitchen and Ciaran is going to do that. For the first time I am not worried about it because I know Ciaran will do an excellent job.
Tina in Hertfordshire Posted on 05/11/2022 , work completed 04/10/2022
Customer Service
We used Ciaran to upgrade our 20 year old boiler and despite it being a complex job, he was able to complete it to an exceptional standard and in the projected timeframe. Due to the age of the boiler, new piping was required for which carpets and floor boards needed to be lifted. Roof tiles needed to be moved to push the new flue through. Despite the complexity, Ciaran displayed complete confidence every step of the way. He was able to answer any questions I had and was very reassuring. I am extremely satisfied with the end result and would not hesitate for a second recommending Ciaran to my family and friends. He is extremely knowledgeable, and has complete confidence in his abilities. Even though a lot a problem arose due to the age of the boiler, he never once displayed any hesitation and knew exactly how to tackle everything. Not only did he do a remarkable job, his attention to detail is excellent. He ensured that everything looked neat and clean, all the pipework was perfectly aligned with all the excess cut out, all the wiring was tucked away, drilling was done exactly to size to pass pipes through, all the floor boards and carpets put back exactly as they were, all rubbish was removed. I can honestly say, moving forward I will always use him for any plumbing/heating jobs that come up as I have complete peace of mind that the job will be carried out by a professional. Overall, highly recommended!
Customer in Hertfordshire Posted on 02/08/2022 , work completed 29/07/2022
Investigating heating problem/Remedial Work to Megaflo/Re-routing heating pipes
Customer Service
Earlier this year Ciaron installed a Worcester Bosch Greenstar boiler and fitted new copper pipework in the kitchen and hallway. The downstairs heating did not work efficiently which was baffling so he returned to investigate the problem. He methodically checked all the pipework, radiator valves and the radiators and would not give up until he had found the problem. We were very relieved. As usual he worked quietly, cleanly and diligently. If we need any further work in the future, we will not hesitate to engage Ciaron. He will be carrying out an annual service on our boiler and system every year from now on. In addition to the said work, he found a problem with a valve in relation to the Megaflo which we were not aware of so he is returning to replace it in the near future. He pointed out that once we start using the heating, it will cost us more money if it isn't fixed which was very helpful. Again, we would not hesitate to recommend Ciaron.
Customer in Hertfordshire Posted on 01/08/2022 , work completed 28/07/2022
Prompt and efficient service
Customer Service
My boiler needed a service so I used this site to find a service engineer. The 1st to come up was Stelfox Plumbing and heating and as they were close I contacted them. I'm glad I did. I stressed there was no hurry, but nevertheless a convenient date was arranged. I received a text in advance of his arrival, and he came on time and completed a thorough service. Ciaran left the place as he found it. A professional and courteous service all round.
Customer in Hertfordshire Posted on 27/07/2022 , work completed 26/07/2022
Customer Service
Ciaran has carried out a wide variety of work for us, which involved installing a new Worcester Bosch wall hung boiler, a new radiator, replacing a shower valve (including making good), running extensive new gas and water pipes and creating new drain outlets. Ciaran’s work has been absolutely exceptional in all cases. Refreshingly, he has carried out difficult investigations and given much thought to the work, coming up with creative solutions which saved us a lot more work overall. Ciaran is very polite, articulate, approachable, extremely skilled, punctual, clean and tidy. Additionally, he listens carefully and is excellent at communicating at all stages. We have further work to be done in the future and feel relieved that finally we have found a gas engineer/plumber that we can trust to do the work professionally. We highly recommend Ciaran.
Tina in Hertfordshire Posted on 26/04/2022 , work completed 21/04/2022
Change my ageing tap
Customer Service
I sent Ciaran some photos of the area under the sink that would be required to access the job. He came back very quickly with a recommendation of the make of tap and a fair price. He turned up at the appointed time and got on with job, very clean and tidy Even cleaned up the sink for me. I am very happy with the work done John
Customer in Hertfordshire Posted on 06/03/2022 , work completed 02/02/2022
Professional service.
Customer Service
I have used Stelfox Plumbing & Heating several times. This time it was to replace a radiator valve and to look at a faulty shower. The valve was replaced and now works perfectly. Ciaran gave me clear options with regard to the shower problem and I have engaged him to carry out further work. Ciaran responds quickly to any messages and he carries out the work in a professional and friendly manner.
Eileen in Buckinghamshire Posted on 04/02/2022 , work completed 28/01/2022
Endorsement Reference
Customer Service
Has had variety of work completed over the last 18 months such as boiler in warehouse, pipework, pretty good. On time, thorough. If any changes, would let me know. Would Recommend.
Which? Trusted Traders Consumer Posted on 21/01/2022 , work completed 21/01/2022
Plumbing Reference
Customer Service
I had one radiator removed and another horizontal radiator switched for a vertical one. He was very professional and clean. The work was carried out quickly and professionally. I would recommend him.
Which? Trusted Traders Consumer Posted on 21/01/2022 , work completed 13/12/2021