Endorsed by Which?

Heat Tech Services Limited

4.9

381 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
381 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
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
Fast professional and highly knowledgeable
Customer Service
Quality
Value
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
The trader replied (on 01/10/2024)
We are pleased to hear you were happy with our work and thank you for the reveiw. Mark and the Team.
Friendly staff who were quick and efficient with the Annual Review
Customer Service
Quality
Value
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
The trader replied (on 01/10/2024)
Thank you for the lovely review and for your being one of our loyal customers. Regards Mark and the Team
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.
Replacement of 20 year old boilers ( x2)
Customer Service
Quality
Value
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
The trader replied (on 08/07/2024)
Thank you for your custom and your great review. We are pleased to hear you are very happy with our work and will pass on your comments to our engineers.
Heat Tech Services are terrific
Customer Service
Quality
Value
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
The trader replied (on 08/07/2024)
It is great to hear that you are happy with the work we carry out for you. Thank you for the review and your custom.
Excellent
Customer Service
Quality
Value
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
The trader replied (on 08/07/2024)
Thank you for your review and your custom. We are very pleased to hear that both you and your Mother are happy with our work.
Very fast response … excellent work
Customer Service
Quality
Value
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
Water pressure has never been so good.
Customer Service
Quality
Value
Used Heat tech for the first time and they were able to fit us in on the same day. The engineer (Saphire) immediately understood what was needed and the whole job was done in half a day. As a result the water pressure from the mega flow doubled. We have lived here for 15 years and never had the pressure so good. Definitely will use them again.
Customer in Hertfordshire Posted on 02/05/2024 , work completed 29/04/2024
Highly skilled team
Customer Service
Quality
Value
We have been using Heat Tech for a number of years for plumbing and heating and cannot praise them enough. Mark has built a fantastic team and we have never been let down. Mark always puts himself out if we have anything urgent and his prices are usually very reasonable. We wouldn’t hesitate recommending Heat Tech to anyone that needs plumbing or heating services. Thanks Mark and team!
Customer in Buckinghamshire Posted on 08/04/2024 , work completed 05/04/2024
Central heating pump issue
Customer Service
Quality
Value
Replied promptly. Arrived on time. Helpful and personable engineers. Diagnosis and repair completed efficiently. Will use again for our boiler service.
Customer in Buckinghamshire Posted on 01/04/2024 , work completed 20/03/2024
Prompt Service
Customer Service
Quality
Value
They diagnosed the problem and fixed my boiler pump on the same day that I telephoned them. Workman was pleasant to deal with. Very happy with both the service and the work completed.
Customer in Hertfordshire Posted on 19/02/2024 , work completed 06/02/2024