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.

How can we be so sure?

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
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
Boiler service
Customer Service
Quality
Value
Booked visit via Mizzen Company. Easily done. Time of 8 am - 9 am given. Arrived 8.30 and completed by 9. Boiler serviced without issues. 3 radiators bled only. Polite, friendly, professional and tidy work.
Customer in Greater London Posted on 14/09/2026 , work completed 10/09/2026
Heat tech
Customer Service
Quality
Value
As usual the plumber arrived at the agreed time. Boiler given annual service. Area left clean. I have always had prompt, efficient service from this company, whose details I was given by the boiler manufacturer after the builder's plumber left the boiler leaking. I have no hesitation in recommending them. Their workers are always clean, well presented and polite. On a previous emergency occasion the office went out of their way to sort out a prompt response.
Customer in Hertfordshire Posted on 11/09/2026 , work completed 09/09/2026
Professional and thorough
Customer Service
Quality
Value
Heat Tech are my go to heating company who installed my central heating. They come annually to carry out my boiler service. Always on time and do a thorough and professional job.
Customer in Buckinghamshire Posted on 10/09/2026 , work completed 07/09/2026
Shower leak repair
Customer Service
Quality
Value
Arrived early. Friendly, polite and professional work. Leak from failed silicone in shower under plug hole. Replaced and resealed pipes. Completed in good time. Communication given throughout work and advice on completion. Details for repair of ceiling taken on same visit for future repair once happy no further issues.
Customer in Greater London Posted on 12/08/2026 , work completed 12/08/2026
Always Deliver
Customer Service
Quality
Value
We use Heatech for all our heating and plumbing requirements. They have over the years replaced our boiler, radiator system, water tank as well undertaking our annual system servicing needs. They have always assisted us rapidly whenever we had a problem or emergency. They have just completed fitting a new heating system at my daughter’s house. The team are knowledgable, diligent, reliable and always polite and reliable. They are also v punctual and stay until the job is complete. Highly recommended by us on all fronts.
Customer in Hertfordshire Posted on 06/08/2026 , work completed 05/08/2026
Top quality work delivered by a great team
Customer Service
Quality
Value
The whole experience of dealing with HeatTech is a pleasure, from first contact with their receptionist through to sign-off of the work and invoicing. Efficient, online, professional - can't fault them! This review is for a boiler and fireplace service and safety check, but I'd say just the same of HeatTech for the major heating system installation they did for me last year.
Customer in Buckinghamshire Posted on 03/08/2026 , work completed 28/07/2026
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
Knowledgeable, efficient and painstaking perfectionists.
Customer Service
Quality
Value
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
Excellent work in the kitchen
Customer Service
Quality
Value
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
A Very Satisfied Customer
Customer Service
Quality
Value
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
Punctual, polite and left neat and tidy
Customer Service
Quality
Value
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
Boiler Service
Customer Service
Quality
Value
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
Emergency repair
Customer Service
Quality
Value
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
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 work
Customer Service
Quality
Value
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
Great Work
Customer Service
Quality
Value
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
Professional Service
Customer Service
Quality
Value
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
Gas Leak
Customer Service
Quality
Value
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
Great service
Customer Service
Quality
Value
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
Excellent service
Customer Service
Quality
Value
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
Heat Tech provided a professional, helpful service and completed the work very quickly when our boiler stopped working .
Customer Service
Quality
Value
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
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
Boiler Repair
Customer Service
Quality
Value
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
The trader replied (on 01/10/2024)
Thank you for your review and your continued custom. Kind regards Mark and the Team.
Back Boiler Service
Customer Service
Quality
Value
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
The trader replied (on 01/10/2024)
Thank you for your review. Regards Mark and the Team