Endorsed by Which?

Stelfox Plumbing & Heating

5.0

25 Reviews

Opening Hours
Today - 08:00–18:30
  • Monday 08:00–18:30
  • Tuesday 08:00–18:30
  • Wednesday 08:00–18:30
  • Thursday 08:00–18:30
  • Friday 08:00–18:30
  • Saturday 10:00–15:00
  • 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

About

We at Stelfox Plumbing and Heating are proud to be recognised as a Which? Trusted Trader, delivering dependable plumbing and heating services built on quality, honesty, and professionalism.

Whether you need an emergency call-out, routine repair, or a full installation, we’re committed to providing expert solutions tailored to your needs.

Our Services:
- Boiler installations, servicing and repairs
- Central heating systems
- Taps, showers, toilets and baths
- Radiators and pumps
- Power flushing
- Drainage systems

We hold ourselves to the highest standards of service and customer care. Our reputation is built on being reliable, professional, and thorough — ensuring every job is completed to the highest standard and backed by genuine customer satisfaction.

"Plumbing You Can Trust. Service You Deserve." – Stelfox Plumbing and Heating

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

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
25 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
New radiator in kitchen, thermostatic valves to all.
Customer Service
Quality
Value
Always very punctual and industrious. Work carried out to a very high standard. Excellent communication and ongoing after care.
Customer in Buckinghamshire Posted on 23/05/2023 , work completed 05/04/2023
The trader replied (on 28/11/2025)
Thank you for your kind words — I’m really glad you’re happy with the service and ongoing support. Your feedback is greatly appreciated.
Fixing two radiators that stopped working plus annual boiler and cylinder service
Customer Service
Quality
Value
We telephoned Ciaran and asked him if he could look at two radiators that had stopped working. He arrived promptly on the agreed day and identified the problems very quickly. He fixed one radiator straight away and is returning to fix the other one. Whilst he was on site, Ciaran carried out our annual boiler and megaflo cylinder service and completed the necessary paperwork. Ciaran has carried out extensive heating and plumbing work to our property and we would not consider engaging anyone else because he is punctual, a very good communicator, tidy, clean and very polite and moreover he is an excellent heating engineer and plumber. He is very diligent and listens to any concerns or ideas you may have. We would not hesitate to recommend Ciaran for any heating or plumbing work you may need.
Customer in Hertfordshire Posted on 02/05/2023 , work completed 06/04/2023
The trader replied (on 28/11/2025)
Thank you so much for taking the time to leave such a detailed review. I’m really pleased I was able to help with your radiators and that one could be fixed straight away, with plans in place to resolve the other. It’s great to hear that the annual boiler and cylinder service also went smoothly and that the paperwork was all in order — keeping everything thorough and up to date is something I always aim for. I truly appreciate your kind words about punctuality, communication, and tidiness. It means a lot to know that the effort I put into listening carefully and working diligently has made a difference for you. Having carried out a range of heating and plumbing work at your property over the years, I’m grateful for the trust you continue to place in me. Your recommendation is greatly appreciated, and I look forward to helping with any future plumbing or heating needs you may have.
Redoing Kitchen Pipework/Dishwasher Installation
Customer Service
Quality
Value
This is our second time using Ciaran. Like last time, the quality of work was impeccable. We required the piping in the kitchen to be redone as it was extremely old and rusted, as well as requiring additional outlets for a dishwasher. All work was carried out in a timely and efficient manner, with great attention to detail. If things like symmetry and perfect lines bother you, I highly recommend Ciaran, he makes extra effort to ensure it is not just functional but looks good too. We will always use him for any future plumbing/heating jobs.
Customer in Hertfordshire Posted on 14/02/2023 , work completed 09/02/2023
The trader replied (on 28/11/2025)
Thank you very much for sharing such a kind and detailed review. I’m really pleased to hear that you’re happy with the kitchen pipework and the additional outlets for your dishwasher. It’s always rewarding to know that the effort put into attention to detail and neat finishes makes a difference — functionality is of course essential, but I believe it should look good too. I truly appreciate your continued trust in my work and the fact that this is your second time using Stelfox Plumbing & Heating. Your loyalty and recommendation mean a great deal, and I’m grateful for the opportunity to help again. I look forward to assisting with any future plumbing or heating needs you may have.
Very responsive. Fixed the problem first time.
Customer Service
Quality
Value
Ciaran was quick to respond to initial contact. He helped identify the problem on WhatsApp and as a result I was able to order the replacement cartridge for the shower mixer. As a result he only needed an hour or so on the day to fix the problem. Saving multiple visits. Tidy, Friendly and on time. Would definitely recommend.
Customer in Hertfordshire Posted on 25/01/2023 , work completed 23/01/2023
The trader replied (on 28/11/2025)
Thank you very much for your kind review. I’m glad I was able to help identify the issue quickly and save you time by getting everything sorted in one visit. It’s great to hear you’re happy with the result and the service provided. I really appreciate your recommendation and the trust you’ve placed in Stelfox Plumbing & Heating.
The analysis of an award leakage was quickly done
Customer Service
Quality
Value
Ciaran was clearly a very professional plumber from the outset, as well as also being cool, calm, and collected, and rapidly brought the offending leakage problem under control, as well as leaving the site clean and tidy. I would recommend Ciaran to others, and I will certainly contact him if there are any future plumbing or heating issues needing attention.
Customer in Posted on 19/01/2023 , work completed 19/01/2023
The trader replied (on 28/11/2025)
Thank you very much for your thoughtful review. I’m glad I was able to get the leak under control quickly and that you were happy with the way the job was carried out. It’s always important to me to remain calm, professional, and leave everything clean and tidy, so I’m pleased this stood out. I truly appreciate your recommendation and look forward to helping again with any future plumbing or heating needs.
Excellent worker
Customer Service
Quality
Value
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
The trader replied (on 28/11/2025)
Thank you so much for your kind words and for taking the time to share your experience. I’m really pleased to hear you’re happy with the radiator replacements and the overall result. It’s always important to me to be punctual, professional, and leave everything clean and tidy, so I’m glad this stood out to you. I truly appreciate your recommendation — knowing you would highly recommend my work is one of the best compliments I could receive. Thank you again for your trust in Stelfox Plumbing & Heating, and I look forward to helping with any future plumbing or heating needs.
Another great job by Ciaran
Customer Service
Quality
Value
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
The trader replied (on 28/11/2025)
Thank you so much, Tina, for leaving such a generous and detailed review. I’m truly grateful for your kind words and for the trust you’ve placed in me over the course of the work carried out at your property. I’m glad the faulty zone valve was replaced smoothly and that everything was left working correctly and tidy for you. Your comments about punctuality, communication, and the standard of work mean a great deal — it’s always rewarding to know these efforts make a difference. I’m especially thankful for your recommendation; knowing you would not hesitate to recommend me to others is one of the highest compliments I could receive. I also really appreciate your confidence in me for the upcoming kitchen work. It’s reassuring to hear you feel at ease knowing the job will be done to the right standard, and I look forward to helping you again soon.
Exceptional!
Customer Service
Quality
Value
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
Quality
Value
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
Quality
Value
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