Totally reliable
We have used Mark on a number of occasions over the last six years including to install a new boiler and new Megaflow and to extend our central heating to areas of our house not previously heated. He has also done much smaller jobs, including, on this occasion, fixing a leak that had started from our shower valve. On each occasion he has spent time analysing the situation, clearly explained his proposed solution and then implemented it very professionally. I doubt he is the cheapest plumber covering Chorleywood, but I'm pretty sure he's the best.
PaulJS
Posted on 23/08/2016
, work completed 23/08/2016
Recommended
New boiler and hot water system
Heat Tech re-configured the heating system in a flat I rent out. This involved installing a new combi boiler and removing the pressurised water tank system. The work was complicated and carried out to a high standard, with little mess left. My life was made easy with Mark Ockenden working directly with the tenants in a sensitive manner. The job started and finished on schedule and to budget. I have no hesitation in recommending Heat Tech as a professional and competent company.
Customer in Hertfordshire
Posted on 04/08/2020
, work completed 23/07/2020
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 service
Met Mark helping our elderly neighbour which he did cheerfully even though no work for him. Serviced our boiler and fitted new thermostat, all done efficiently by Mark and his team and everything checked and left clean - may not be the absolute cheapest firm around but worth it to get the expertise and service.
Julian
Posted on 14/10/2014
, work completed 14/10/2014
Recommended
Efficient reliable work
Mark's team had to switch out old boiler set up with loft tanks etc and replace with combi plus some extra rads. A big job that took all week for 2 people. Job completed as planned and all done efficiently. We had a few snagging problems but Mark made sure that one of his team came out to fix them quickly. Have used Mark before and will definitely use him again. Reliable service and good at diagnosing tricking problems!
Customer in Buckinghamshire
Posted on 01/11/2021
, work completed 08/10/2021
Recommended
Tried and trusted
I have used Mark at Heat Tech a few times over the years and he has always been very reliable. I have no hesitation in recommending him. As others have remarked,he might not be the cheapest heating engineer around but he always provides excellent service.
Carole
Posted on 20/10/2014
, work completed 20/10/2014
Recommended
Professional and responsive.
I have had cause to use this company twice recently and both times I have found them to be responsive and professional in their approach to the work and issues. Good and consistent communication, they did also turn up when they say they said they would.
Customer in Hertfordshire
Posted on 31/03/2022
, work completed 30/03/2022
Recommended
Reliable and helpful
The Heat tech team have always been helpful, friendly and reliable. Advising over the phone and squeezing in last minute visits so as not to let you down. Highly recommended.
Anjali k
Posted on 25/11/2014
, work completed 25/11/2014
Recommended
A skilled and reliable tradesman
Mark Ockenden response rapidly to customer requirements and can be relied on to carry out sound and competent work.
Adrian, Hertfordshire
Posted on 12/08/2014
, work completed 12/08/2014
Recommended
Quality work from experienced team
Identified and fixed leaking toilet cistern (which wasn't an easy job given rusted bolts) and identified problem with leaky water cylinder, and gas fire. Mark clearly knows exactly how to diagnose a problem and fix it effectively.
Customer in Hertfordshire
Posted on 21/07/2020
, work completed 15/07/2020
Recommended
Fitting of Shower Valve
Prompt response to enquiry, followed by booking of appointment. Turned up promptly on day, high quality work to budget. Friendly service.
Colm Mc
Posted on 02/11/2018
, work completed 02/11/2018
Recommended
Prompt and efficient.
Mark and his apprentice arrived promptly to carry out a radiator repair which I had requested only a few days prior. The work was carried out quickly and efficiently, with zero mess. This is not the first job that Heat tech have carried out for me, and I have always been very satisfied by the quality and efficiency of their work. "Full marks"!
Customer in Hertfordshire
Posted on 13/08/2019
, work completed 12/08/2019
Recommended
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
radiator service
James and Louie provided a good, friendly, clean and tidy service. Radiator back in full use.
local resident
Posted on 18/08/2015
, work completed 18/08/2015
Recommended
Service
Straight forward service of modern boiler, the service was carried out by an apprentice, but fully checked at each stage by James who is gas safe. Every confidence in the work, happy to recommend and would use again
Churleswood
Posted on 14/01/2015
, work completed 14/01/2015
Recommended
Very professional
In addition to fitting a new hot-water cylinder, dealt very efficiently with replacing an old motorised central heating valve (faulty) with a new model - adapting it to an existing cast-iron piping. Cleaned up well at end of job.
Dudley, Middlesex
Posted on 02/09/2014
, work completed 02/09/2014
Recommended
Reliable and obliging
Mark listens, is patient - and is a clean and tidy worker, who takes away packaging and broken parts. He is polite and does the job well. If you are in trouble e.g. water overflowing, he will attend the same day after booked work. He trains apprentices.
D L, Hertfordshire
Posted on 05/12/2018
, work completed 05/12/2018
Recommended
Professional
The team from Heat Tech helped me to fix a small water trickling issue in the toilet bowl. I was very impressed that they brought their own shoe cover to maintain cleanliness. This is the first time I have seen a business so well prepared. They had everything required to do the job and explained the issue, quite clearly. Thank you
Customer in Buckinghamshire
Posted on 16/11/2020
, work completed 13/11/2020
Recommended
Good Annual Service of our Boiler
Heat Tech reminded us that the boiler required its annual service and when I booked a time with them, they said that the guy who is going to do the work would telephone me when he is on his way to my address. Unfortunately, my phone was busy when he made the call, but he still turned up at the house at the time arranged. The work was done within an hour and I was told that the boiler was quite old and that, should it need new parts, these were no longer available, and so we must be aware that we should be prepared to have a new boiler in the near future.
Customer in Buckinghamshire
Posted on 15/09/2026
, work completed 11/09/2026
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
Poor service - Completed initial work, but impossible to get hold of for follow-up
Had issues with my radiators. Mark was very helpful initially, advising on what are the options to resolve and proposing course of action over multiple steps. Team completed the initial job, but this did not resolve the issue. Tried to speak to Mark a number of times after this - he was difficult to get hold of, refused provide a quote for the next step and preferred to say this is the cost per hour. Said he would call back but did not multiple times. Overall initial service was good, but not impressed with the follow-up and issue still not resolved
Customer in Buckinghamshire
Posted on 13/08/2022
, work completed 28/06/2022
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
Questionable service
Had the boiler serviced by Heat tech in September. £120 is at the expensive end for this but figured was best to pay up for a quality service to avoid unwanted expensive failures during the winter. Boiler (combi) had been working fine before the service, but almost straight away post service we started to have instances of needing to re-pressurise the system. This happened a few times so eventually called Heat Tech back in a month later to investigate, where they found a fault with the expansion vessel, despite having signed this off as working fine at the service the previous month. £265 bill to find the fault, order the part and return to replace it. Spoke on the phone, Heat Tech not interested in excepting any liability or goodwill gesture for the sequence of events or questions around the service quality. Will not be using them again.
Customer in Buckinghamshire
Posted on 04/11/2023
, work completed 25/10/2023