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
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
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
Emergency water leak
Customer Service
Quality
Value
Responded immediately to my somewhat frantic phone call at 8.30am Sunday morning when I had water showering from the ceiling. Quickly located and fixed broken pipe in loft, hoovered it dry and cleared out all soggy insulation. Very pleased with the service indeed and wouldn't hesitate to use them again.
Customer in Hertfordshire Posted on 10/04/2022 , work completed 10/04/2022
Tracing and rectifying leak
Customer Service
Quality
Value
We noticed a small leak coming through the downstairs ceiling. It proved very difficult to find but once it was located the exact cause was established. The remedy involved installing a new shower which Heat Tech did most efficiently. A big job for a small leak but one which had to be done. I'm pleased with the new shower. All in all a very satisfied customer. I would have no hesitation in using Heat Tech again and would definitely recommend their services.
Keith in Buckinghamshire Posted on 07/11/2022 , work completed 04/11/2022
Polite and Efficient work
Customer Service
Quality
Value
The work was the replacement of an old and faulty Ch wall thermostat. The original engineer - Sapphire - was ill and unable to attend but her replacements actually arrived before the original appointment time and completed the installation efficiently and courteously. Moreover, they provided a clear, patient and thorough explanation of the workings of the new,' smart', thermostat. A very good, professional job.
Customer in Hertfordshire Posted on 19/08/2022 , work completed 15/08/2022
On time efficient helpful thorough
Customer Service
Quality
Value
The engineer arrived on time and was friendly He carried out the service on my boiler in a confident manner and was tidy and efficient. He also helped set my timer which I was having problems with. He suggested it was faulty. When I asked him if Heat Tech could fit a replacement he said yes and suggested I contact Mark Ockendon. I was extremely happy with the service.
Customer in Hertfordshire Posted on 08/10/2022 , work completed 05/10/2022
Great Emergency Work and Annual Check
Customer Service
Quality
Value
Mark and team are brilliant. We found we were losing pressure on our boiler, and then during other works discovered a leak under the landing floor. Mark came quickly, replaced poor work by a previous plumber and replaced with proper copper pipes. With my elderly mum in the house getting this sorted was vital and Mark came up trumps. We also requested our annual heating service and had an appointment within days. Prices are very fair and Mark runs his business in a very professional way.
Customer in Hertfordshire Posted on 07/09/2022 , work completed 07/09/2022
First Class again
Customer Service
Quality
Value
Heat Tech installed my boiler with other works in March 2012. They have serviced my boiler installation ever since and always carry out a first class job at a very reasonable price. Their general plumbing is also of a high standard. Great, reliable service. 100% recommended.
Customer in Hertfordshire Posted on 06/06/2023 , work completed 05/06/2023
Speedy and efficient service
Customer Service
Quality
Value
Many thanks to Sapphire and the team for the speed and efficiency of rerunning gas pipework following leak. Having anticipated being without gas for weeks, Heat Tech had me up and running in days. They kept me informed throughout. Punctual and courteous.
Customer in Greater London Posted on 11/07/2023 , work completed 06/07/2023
Excellent Service
Customer Service
Quality
Value
The email the day before reminding me that the Service was due to be carried out was very helpful and assuring. The Engineer, Ian, arrived on time and carried out a full Service within the schedule and budget. No hidden extras. Ian was extremely pleasant and approachable and a pleasure to deal with. I have no hesitation in calling on the services of this Company for any future problems that may arise.
Customer in Hertfordshire Posted on 17/07/2023 , work completed 10/07/2023
Fantastic service thank you
Customer Service
Quality
Value
Heat Tech came out at very short notice to repair a hole we had in a gas pipe - fixed swiftly and calmly....highly recommend!
Customer in Hertfordshire Posted on 26/07/2023 , work completed 25/07/2023
Excellent as always
Customer Service
Quality
Value
Polite, prompt, helpful, knowledgeable, informative and very fair price We have used this company for many years and would thoroughly recommend them.
Customer in Posted on 27/07/2023 , work completed 26/07/2023
Thank you so much
Brilliant. We had no water. We called Mark. Within 2 hours he sent a lady plumber and her assistant. She found the problem, went out to buy a spare part, returned, and all was completed, with running water from all taps and showers working again much faster than I thought - just 90 minutes. This is definitely a company I will recommend.
Customer in Hertfordshire Posted on 30/07/2023 (Reviewer did not use service)
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
Boiler Service
Customer Service
Quality
Value
Excellent work and would have no hesitation in recommending Heat Tech.
2010-07-01 12:20:34.373 Posted on 07/10/2014 , work completed 07/10/2014
Boiler Service
Customer Service
Quality
Value
Professional, polite and tidy when servicing my boiler. I can have no complaints and would recommend them.
Annie, Hertfordshire Posted on 12/11/2015 , work completed 12/11/2015
Would not hesitate to call him again
Customer Service
Quality
Value
Our central heating had stopped working. We called Mark and after answering a few questions he said he would come round that afternoon and bring with him the parts he felt would be needed. He arrived promptly and after investigation replaced our timer control which resolved the problem. Mark was polite, knowledgeable and we would not hesitate to call him again if we had a boiler or plumbing problem
Clive, Chesham Posted on 14/09/2015 , work completed 14/09/2015
Always reliable and trustworthy
Customer Service
Quality
Value
Mark installed our boiler a few years back and we have had it serviced by Heat Tech to service it ever since. They are always prompt, reliable and efficient.
Mandy G Posted on 05/09/2016 , work completed 05/09/2016
Excellent Plumber
Customer Service
Quality
Value
We have been using Mark Ockendon for over two years now and he is an amazing guy. His honesty and integrity are beyond what we have encountered with other tradespeople. He is very professional, clearly knows his trade and ultra-reliable. We never get the feeling of being “ripped-off” and always feel he goes that extra mile. It is safe to say that we have found our “plumber for life”.
Ju5t5h4z Posted on 04/01/2014 , work completed 04/01/2014
TOP BANANA
Customer Service
Quality
Value
I first met Mark through a networking group. I have known him for over 5 years and would not hesitate to recommend him and in fact regularly do. He is honest and reliable and twice I have called him out on an emergency on a weekend, once when I had a gas leak and another time when a pipe burst. He has also put in a new shower, serviced the boiler, changed a tap and detected faults. He's an all round excellent worker and I cannot recommend him highly enough & he definitely wont rip you off!
Which? Trusted Traders Consumer Posted on 02/02/2014 , work completed 02/02/2014
HIGHLY RECOMMENDED
Customer Service
Quality
Value
Mark and his team have been out to us several times over the past few years. They always do a good job and sort out our various plumbing issues, despite challenging conditions, always with a smile and at very reasonable rates. A great company, thoroughly recommend them.
CMR402438226 Posted on 10/07/2014 , work completed 10/07/2014
Excellent Plumber
Customer Service
Quality
Value
We used Heat Tech to come and fit our new bathroom taps. They came round quickly, the guy was very professional and got the job done to an excellent standard. Great value for money I highly recommend Heat Tech and will use them again I ever need anything done pluming related. Thanks for the help Heat Tech :-) A*
mattyb Posted on 30/08/2014 , work completed 30/08/2014
Central heating, hot water and general plumbing.
Customer Service
Quality
Value
I have been entirely satisfied with everything that Mark Ockendon and his team have done for me.
2011-07-13 12:16:03.147 Posted on 20/06/2015 , work completed 20/06/2015
Great Service
Customer Service
Quality
Value
Very professional - cannot fault. Will definitely use again.
Site User Posted on 12/07/2015 , work completed 12/07/2015
Heat Tech
Customer Service
Quality
Value
Have used Mark and his team for three years and we are very happy to have found him, a professional and reliable service second to none.
Neil33 Posted on 18/05/2015 , work completed 18/05/2015