Endorsed by Which?

Heat Tech Services Limited

4.9

392 Reviews

Opening Hours
Today - 08:00–18:00
  • Monday 08:00–18:00
  • Tuesday 08:00–18:00
  • Wednesday 08:00–18:00
  • Thursday 08:00–18:00
  • Friday 08:00–18:00
  • Saturday - Closed
  • 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 are a Gas Safe™ Registered company based in Chorleywood Hertfordshire providing domestic heating and plumbing services to clients throughout Chorleywood, Rickmansworth, Amersham, the Chalfont’s and surrounding local areas in Herts, Middlesex and Bucks.
Established in 2003 we have built up a reputation for providing a
first class service at a reasonable price to our many local customers.
Our services include:
Boiler servicing, fault finding and repairs.
Boiler replacements and heating system upgrades.
Complete new heating systems.
Hot water cylinder replacements.
Hot water upgrades, including mains pressure hot water systems.
Radiator additions, replacements and/or valve replacements.
Heating system Power Flushing for improved performance and reduced running costs.
Heating/hot water control system fault finding, repairs and upgrades.
Shower pump installations and replacements.
Installation of heating system filter's for protection of boiler and pump.
Landlords gas safety checks.

What we do

  • Plumbers

  • Heating contractors

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

    • Gas emergencies
    • Radiators and central heating
    • Boiler repair
    • Boiler servicing
    • Boiler installation
    • Gas safety testing and inspection
    • Immersion Heaters
    • Power flushing
  • Kitchen fitters

    • Kitchen installation
  • Bathroom fitters

    • Bathroom Installation
  • Renewable energy

    • Air source heat pumps

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

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100% of the reviews we publish have been through our stringent moderation process.

4.9
392 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Totally reliable
Customer Service
Quality
Value
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
New boiler and hot water system
Customer Service
Quality
Value
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
Excellent Service
Customer Service
Quality
Value
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
Great service
Customer Service
Quality
Value
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
Efficient reliable work
Customer Service
Quality
Value
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
The trader replied (on 22/02/2022)
Thank you for your continued custom and for taking the time to leave us a great review. We are pleased to hear that you were happy with the work carried out with the installation of your new boiler and extra radiators. Warm regards Heat Tech
Tried and trusted
Customer Service
Quality
Value
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
Professional and responsive.
Customer Service
Quality
Value
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
The trader replied (on 19/05/2022)
Thanks for your lovely review. Politeness and reliability are rare commodities in todays world but we try to keep the good old fashioned customer service alive in our business!
Reliable and helpful
Customer Service
Quality
Value
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
A skilled and reliable tradesman
Customer Service
Quality
Value
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
Quality work from experienced team
Customer Service
Quality
Value
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
Fitting of Shower Valve
Customer Service
Quality
Value
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
Prompt and efficient.
Customer Service
Quality
Value
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
Fix water softener leak
Customer Service
Quality
Value
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
radiator service
Customer Service
Quality
Value
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
Service
Customer Service
Quality
Value
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
Very professional
Customer Service
Quality
Value
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
Reliable and obliging
Customer Service
Quality
Value
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
Professional
Customer Service
Quality
Value
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
Good Annual Service of our Boiler
Customer Service
Quality
Value
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
First time user
Customer Service
Quality
Value
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
Poor service - Completed initial work, but impossible to get hold of for follow-up
Customer Service
Quality
Value
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
Quality
Value
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
The trader replied (on 08/07/2024)
Thank you for your custom and feed back and we are glad you were satisfied with the work completed.
Questionable service
Customer Service
Quality
Value
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
The trader replied (on 08/11/2023)
We are very sorry that you felt our service was not up to scratch. Expansion vessels are particularly prone to failing after a few years and this can happen at any time, even shortly after a service. At the time of the service the vessel air pressure was low, which is not unusual (and one of the reasons why regular servicing is important). It was topped up with air in the usual way. If the internal bladder, which is impossible to see, had been weak, it may have been the final straw which caused it to split a few days later. We did try to re-inflate it when you called us back but it had clearly failed, so unfortunately it to be replaced. Sorry but these things do happen sometimes.