Fix water softener leak
The engineer who came to do the work was very profession on time and polite got the job done efficiently
Customer in Hertfordshire
Posted on 01/07/2026
, work completed 25/06/2026
Recommended
Knowledgeable, efficient and painstaking perfectionists.
Heat Tech replaced our gas Worcester boiler with a new Vaillant gas boiler. At the last service they advised us that the Worcester boiler was beginning to fail and that making the change in the summer meant we could plan a mutually convenient time and make savings with a more reliable and more efficient boiler. The men, Francesco and James arrived exactly as promised and explained what they were going to do and why. They explained the sequence of work and where we could be least disturbed. They began by flushing out the system to clean all the radiators and pipes. They removed the old boiler and installed the new one. The boiler is built into an exterior wall so they also replaced the flu and the cowling. Unasked; they thought through and made adjustments in the connections and layout. We now have an expansion tank we can monitor and pressure controls in the house. Throughout their time here they were very careful and considerate and as quiet as possible. They immediately cleared up any debris or mess and took away every bit of old equipment and the packaging etc of the new. One example of their consideration was to make sure the Aga was alight and working after they had turned off the gas to check for leaks in the system. The Aga is notoriously difficult to relight. When all the work was complete they added two bottles of a corrosion inhibitor. They were a pleasure to have and we would like to thank them both.
Customer in Buckinghamshire
Posted on 23/06/2026
, work completed 19/06/2026
Recommended
Excellent work in the kitchen
I called them to help me install a new American fridge freezer that needed to be plumbed in . Francesco worked very transparently with me and worked through the best most organised way to feed through the piping and was not fazed when I asked him to also switch around the order of the dishwasher and washing machine at the same time I mentioned problems with the boiler too, and he had a good look at it all and checked all the obvious things we needed to organise a recall for a Main boiler service due time and it needing to be quoted, but overall I was very impressed withthe standard and professionalism of the work that he did in the kitchen
Customer in Hertfordshire
Posted on 15/06/2026
, work completed 11/06/2026
Recommended
A Very Satisfied Customer
New boiler installation of old system. All my contact with Charlie and Carol was professional, informative and timely. I am very pleased with my new boiler and the resulting heat and hot water. Charlie's team - Ethan, Tom and then Lewis and on last day Harrison were excellent - thorough, patient (with all my questions) and gave a lot of info and updates of what they were doing and why. I would thoroughly recommend Heat Tech Services Ltd.
Customer in Hertfordshire
Posted on 08/03/2026
, work completed 05/03/2026
Recommended
Punctual, polite and left neat and tidy
Removed radiators and capped pipes. Restored the upstairs heating and left the site clean and tidy with pipes labelled. Turned up on time, pleasant to deal with. Will use again.
Customer in Buckinghamshire
Posted on 24/04/2025
, work completed 17/04/2025
Recommended
Boiler Service
Arrived on time. Cheerful pleasant engineer. Advised me that the Vaillant boiler might need a new fan at the next service. Reasonable bill. Happy customer as always with this company.
Customer in Hertfordshire
Posted on 16/01/2025
, work completed 15/01/2025
Recommended
Emergency repair
Mark came very quickly on a Saturday lunchtime to repair a sudden mains leak in the kitchen - it involved cutting out the back of the cupboard and locating and repairing the leak. He was very efficient and managed to finish the repair while I was dishing out roast dinner to the family. Very impressed & grateful!
Customer in Hertfordshire
Posted on 13/01/2025
, work completed 16/11/2024
Recommended
Excellent Service
Mark and his team were very helpful and easy to deal with. They completed all work in a professional and timely manner. We had Ethan managing our job. He was great from start to finish. Helpful, explained everything very well, and took pride in his work. We would recommend Heat Tech and definitely use them again.
Customer in Hertfordshire
Posted on 24/12/2024
, work completed 23/12/2024
Recommended
Great work
We have used Heat tech for a few years bows after a recommendation from the neighbours. Always had great service, and would and have recommended them to other people.
Customer in Hertfordshire
Posted on 16/12/2024
, work completed 03/12/2024
Recommended
Great Work
Heat Tech Services is exceptional! From the moment I contacted Mark, their expertise and professionalism stood out. They offered clear, insightful advice that found my boiler issue quickly, with a rapid response time that far exceeded other companies. Even responding to my many questions late into the evening. Mark took the time to explain the cause in simple terms and provided tips to prevent future issues. Their engineer Frankie was knowledgeable, friendly, and went the extra mile to ensure everything was tested to the highest standard. If you’re looking for a local reliable, expert service with unmatched responsiveness, I can’t recommend this plumbing company highly enough.
Customer in Hertfordshire
Posted on 21/11/2024
, work completed 15/11/2024
Recommended
Professional Service
I have used Mark and Heat Teach Service Ltd every year since 2006 for my boiler service, central heating replacement, and other plumbing needs. Everyone is always polite and professional respecting my property and my personal circumstances. Excellent and quality service, who I trust.
Customer in Hertfordshire
Posted on 17/11/2024
, work completed 13/11/2024
Recommended
Gas Leak
Had suspicious smell of gas. I decided to phone Mark Ockenden of Heat Tech Services as his firm are registered Gas Safe Engineers. I have used their services for Gas boiler installation, maintenance and general plumbing for many years. I have found his staff, well qualified and highly effecient. Mark arrived on time. He tested for a leak and determined it was minor but needed to be attended to. He found the leaking valve, which was embedded in my fireplace surround. To avoid damaging the fireplace, he lifted carpet and adjacent floorboard, cut the pipe and capped it with a soldered repair - all with my agreement. He put everything back in place and it looks just as it was before the repair was carried out. As usual - excellent service.
Customer in Hertfordshire
Posted on 14/11/2024
, work completed 28/10/2024
Recommended
Great service
Mark diagnosed the problem over the phone, arrived promptly and brought all the necessary materials. Did the work to a high standard and gave helpful explanations and advice. Highly recommend him.
Customer in Buckinghamshire
Posted on 11/11/2024
, work completed 11/11/2024
Recommended
Excellent service
The work was carried out in a professional manner, on time and by a very helpful team. Would highly recommend.
Customer in Greater London
Posted on 11/11/2024
, work completed 07/11/2024
Recommended
Heat Tech provided a professional, helpful service and completed the work very quickly when our boiler stopped working .
We have used Mark for some years before at another house to install a new boiler, annual servicing and various heating issues. Mark always responds very quickly and this time our boiler developed a fault and stopped working. Mark diagnosed the issue, discussed with us what was needed, and then ordered the parts required . The work was completed very promptly to get the boiler working and also completed servicing of our Vaillant boiler and mega flow. Mark is very knowledgeable and helpful and completed the work to a high standard. I will certainly continue to use Heat Tech in the future .
Customer in Buckinghamshire
Posted on 20/10/2024
, work completed 14/10/2024
Recommended
First time user
I was recommended the company by my sister and they did not disappoint. Clean, tidy, knowledgeable and helpful. Bolier service completed and the shower problem that I had misdiagnosed was found and suitable suggestions forwarded to me to decide on.
Customer in Hertfordshire
Posted on 10/10/2024
, work completed 09/10/2024
Recommended
Boiler Repair
I have used HeatTech since 2006. Always had professional excellent customer service from Mark and his staff. On Friday my boiler broke down. Within a few hours Mark was around at my property sorting the problem out and replacing the pump. As ever excellent service at a reasonable price, with fast time response which I am so grateful for. I will be using HeatTech again.
Customer in Hertfordshire
Posted on 16/09/2024
, work completed 13/09/2024
Recommended
Back Boiler Service
Came promptly and carried out a thorough service on our old back boiler where other firms have declined to do the work as they no longer service this type of system. Very pleased with the work carried out and the advice given, will definitely recommend.
Customer in Hertfordshire
Posted on 10/09/2024
, work completed 05/09/2024
Recommended
Fast professional and highly knowledgeable
I called Mark around 6 pm Friday as my normal plumber was booked and I had not had hot water for a week despite my boiler apparently firing up. Mark asked for pictures of my set up and then called me back to use telephone triage with very easy guidance on things I needed to check which quickly led to an over the phone diagnosis of the problem (a failed valve); Mark clearly explained his pricing which was extremely reasonable and committed to come this morning (Saturday 9 am); he quickly confirmed it was a valve problem replaced it and explained how I could run my system more efficiently . Hot water worked perfectly after a few minutes. I recommend Mark very highly and will now use him/ Heat tech for all my boiler servicing work as I was so impressed.
Customer in Hertfordshire
Posted on 03/08/2024
, work completed 03/08/2024
Recommended
Friendly staff who were quick and efficient with the Annual Review
We have used HeatTech for a number of years now as they got us "out of hole" when British Gas said just before Christmas that they couldn't come for 10 days despite the fact that we had a contract with them. Mark and his team fitted us in at short notice and fixed the problem so that we were warm over Christmas. We have continued to use HeatTech and are extremely satisfied with their service.
Customer in Hertfordshire
Posted on 11/07/2024
, work completed 08/07/2024
Recommended
Ask what the charges are before the visit
Customer service and attitude of some of the plumbers a little unfriendly But the work done was good … Until I had a problem weeks later in the same room in a different place Was charged over £100 for the leak to be looked at And the problem was not fixed I was told I was abusive when I questioned the price … And my professionalism questioned … Quick to respond and work ok But not great if you want to complain
Customer in Hertfordshire
Posted on 05/07/2024
, work completed 01/07/2024
Replacement of 20 year old boilers ( x2)
Mark was incredible knowledgable and thorough when he visited us and went through in detail our old system with two boilers over 3 floors. He checked and double checked how it all worked and how to improve our system with a new boiler. The quote arrived quickly and dates booked in. Sapphire, the chef engineer plus 3 other engineers, arrived on time and with respect to our home, took everything out and replaced the new system , looks like a pice of art now and not spaghetti junction!. Nothing was a problem, any queries checked and resolved. I highly recommend if you want a water/ gas related job, large or small, then use Heat Tech. Best decision I have made this year about who to replace our boiler with. Great Team Mark, thank you for sorting out a long time problem. Erica
Customer in Hertfordshire
Posted on 27/06/2024
, work completed 01/05/2024
Recommended
Heat Tech Services are terrific
You cannot ask more from a contractor than they are prompt, easy to deal with, turn up on time and then they diagnose and swiftly fix problems.
Customer in Hertfordshire
Posted on 20/06/2024
, work completed 19/06/2024
Recommended
Excellent
Second time using Heat Tech and again excellent service. My elderly mum had no hot water but Mark diagnosed where the problem was, over the phone. Amazingly they were able to come out the same day and had the problem fixed within twenty minutes. They were very clear explaining what the problem was, which impressed my mum, as she has dementia and often struggles to understand people. Can’t rate them highly enough.
Customer in Cambridgeshire
Posted on 28/05/2024
, work completed 23/05/2024
Recommended
Very fast response … excellent work
Rang the office in the morning and they had just had a cancellation so van arrived 20 minutes later and installed new tap within half an hour. Very happy customer !
Customer in Hertfordshire
Posted on 18/05/2024
, work completed 14/05/2024
Recommended