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
Plumbing services
Customer Service
Quality
Value
Ciaran carried out our annual boiler service and gave, as ever, great service. We have used him for several years and appreciate his work, reliability, punctuality, and communication. Highly recommended!
Customer in Buckinghamshire Posted on 15/07/2025 , work completed 14/05/2025
The trader replied (on 28/11/2025)
Thank you so much for your kind words and for taking the time to leave this review. It’s been a real pleasure working with you over the years, and I truly appreciate your continued trust in my services. Reliability, punctuality, and clear communication are things I take pride in, so it means a lot to know they make a difference for you. I look forward to continuing to provide the same level of care and service whenever you need me.
Prioritized our broken boiler
Customer Service
Quality
Value
The water leak was identified quickly and part sourced. Next day fitted. Boiler service flagged up a couple of rusty parts - given cost of new parts and age of old boiler >10yrs we opted for a new ECO make. Job done quickly with great communication and left very clean and tidy. Reasonably priced great service.
Customer in Hertfordshire Posted on 17/03/2025 , work completed 01/03/2025
The trader replied (on 28/11/2025)
Thank you for taking the time to share your experience. I’m glad we were able to identify and resolve the leak quickly and that the installation of your new ECO boiler went smoothly. Clear communication, efficiency, and leaving everything clean and tidy are always priorities for me, so it’s great to know this stood out. I really appreciate your kind words about the service and pricing, and I’m pleased you’re happy with the outcome.
Exceptional Service – Highly Recommend!
Customer Service
Quality
Value
Stelfox Plumbing & Heating Ltd provided top-notch service! Ciaran was highly skilled, meticulous, and executed my plan flawlessly. He ensured everything was completed to a high standard and even went above and beyond by servicing my boiler while he was there — truly outstanding! His professionalism and expertise made the whole process smooth and hassle-free. I’m extremely happy with the results and would highly recommend him to anyone looking for reliable plumbing and heating services.
Customer in Greater London Posted on 11/02/2025 , work completed 03/02/2025
The trader replied (on 28/11/2025)
Thank you so much for your generous feedback. I’m delighted to hear that you’re happy with the results and that the process felt smooth and hassle-free. Delivering work to the highest standard and going the extra mile is always my aim, so it’s great to know this made a difference for you. I truly appreciate your recommendation and the trust you’ve placed in me — it means a lot.
Change leaking tap
Customer Service
Quality
Value
Ciaran responded very promptly to our callout to change a severely leaking bathroom tap. He removed the old tap, which was a tricky removal as there was heavy corrosion underneath and the tap had to be cut out. He supplied and fitted the new tap, which is working great, looks much better than the old tap, and I am delighted to report there are no more leaks. Ciaran left the bathroom spotless after he finished the job and I would not hesitate to recommend him as an excellent plumber.
Customer in Greater London Posted on 12/01/2025 , work completed 03/01/2025
The trader replied (on 28/11/2025)
Thank you very much for sharing such a kind review. I’m really pleased I could help resolve the leak and that the new tap is working well for you. It’s great to know you’re happy with the result and that everything was left clean and tidy. I truly appreciate your recommendation and the trust you’ve placed in Stelfox Plumbing & Heating.
Excellent plumbing company
Customer Service
Quality
Value
I can truly recommend Stelfox Plumbing. I recently had a new Combi Boiler installed, and Ciaran is probably the best engineer I’ve had the privilege to work with. His work ethics & attention to details were perfect. He removed unnecessary old piping to install a cleaner & much more efficient system. It’s very rare these days to have a plumber like this, these types of work ethics used to be around 40-50 years ago. So it’s a breath of fresh air to know you’ve chosen the correct company. If you have any plumbing needs, call Stelfox because you’ll be happy you did. Thank you.
Customer in Hertfordshire Posted on 05/09/2024 , work completed 22/07/2024
The trader replied (on 28/11/2025)
Thank you so much for such a thoughtful review. I’m really pleased to hear that you’re happy with your new boiler and the improvements to your system. It’s always rewarding to know the work has made a positive difference, and I’m grateful for your kind words and recommendation. Your trust in Stelfox Plumbing & Heating means a great deal, and I’m glad we could provide the service you were looking for.
New Radiators
Customer Service
Quality
Value
Our 4th time using Stelfox Plumbing & Heating, this time to replace all the radiators in the house. As expected, we were extremely pleased with the final result. Ciaran paid great attention to ensure the radiator placement was perfect and that the pipework was symmetrical. Certain radiators were trickier to replace than others, but despite the extra work, Ciaran was very fair with the pricing. Would highly recommend and will definitely use again in the future.
Customer in Hertfordshire Posted on 21/01/2024 , work completed 28/10/2023
The trader replied (on 28/11/2025)
Thank you so much for your continued trust and for sharing such a kind review. I’m really pleased to hear you’re happy with the new radiators and the final result. It’s always rewarding to know the attention to detail made a difference, and I’m grateful for your recommendation. I truly appreciate your loyalty over the years and look forward to helping again whenever needed.
New Shower Replacement
Customer Service
Quality
Value
Ciaran recently replaced a seized shower unit built into the wall. He did so with great care and managed to match the new tiles with much older tiles. Ciaran is very professional and his service is efficient. We have used Ciaran numerous times for drainage issues and repiping and cistern replacement and the service has been fantastic! Highly recommended for any plumbing works!
Customer in Hampshire Posted on 21/11/2023 , work completed 05/03/2021
Boiler Service
Customer Service
Quality
Value
Our 3rd time using Ciaran, as always the quality of work was top notch. Service was carried out in a quick and efficient manner. He was able to answer any questions we had and explain everything in great detail. Would highly recommend!
Customer in Hertfordshire Posted on 07/08/2023 , work completed 28/07/2023
The trader replied (on 28/11/2025)
Thank you so much for your continued support and for leaving such a kind review. I’m really glad I could help again and that you’re pleased with the service. It’s always rewarding to know the work met your expectations and that the explanations were useful. I truly appreciate your recommendation and the trust you’ve placed in Stelfox Plumbing & Heating over the years.
All the internals fixed in broken toilet
Customer Service
Quality
Value
We would definitely recommend Kieran at Stelfox, he did everything he said he would, when he said he would it. He viewed the job on the Friday was back after the bank holiday Monday to fix it. The work was carried out in a highly professional manner, he was on time, clean and tidy and got it fixed for the price agreed. What more do you want. 👍🏻😀
Customer in Hertfordshire Posted on 01/06/2023 , work completed 30/05/2023
New gas pipe fitted for a new gas hob
Customer Service
Quality
Value
I needed a gas supply to a new hob which is being fitted shortly. I telephoned Ciaran (Stelfox Plumbing and Heating) and left a message for him asking him to call me back which he did promptly. We arranged a date and time for the job. On the morning of my job, there were traffic problems which delayed Ciaran slightly but he texted me to let me know he was stuck in traffic and that he was on the way. I really appreciated this because then I knew he was on his way. No other tradesmen I have engaged in the past has done this and often I have been left waiting and wondering if they were still going to arrive. Ciaran installed the new gas pipe for the new gas hob. The job was neat and fitted against the wall perfectly even taking into consideration the wall was wonky as it is a period property. Ciaran worked quietly and cleaned up and hoovered after he had finished. I have engaged many plumbers and heating engineers over the years and I can honestly say that Ciaran is the best. He is polite and listens to you and is very professional in every aspect. He is very respectful to the property and has always done a fantastic job for me every time I have needed work done. I thoroughly recommend Stelfox Plumbing and Heating.
Customer in Hertfordshire Posted on 30/05/2023 , work completed 11/05/2023
The trader replied (on 28/11/2025)
Thank you so much for taking the time to leave such a detailed and thoughtful review. I’m really glad I was able to help with the installation of your new gas supply and that you’re pleased with the result. Communication and reliability are very important to me, so I’m delighted to hear that keeping you updated on the day made a difference — I know how frustrating it can be to be left waiting and wondering. It’s also great to know that the pipework fitted neatly, even with the challenges of working in a period property, and that the care taken with tidiness and respect for your home stood out. I truly appreciate your kind words about professionalism and the trust you’ve placed in me over the years. Feedback like this means a lot and motivates me to continue delivering the highest standards of service. Thank you again for your recommendation — it’s always a pleasure to help, and I look forward to being of service whenever you need me in the future.
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
Excellent
Customer Service
Quality
Value
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
Quality
Value
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
Quality
Value
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
Quality
Value
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
Quality
Value
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