Harmuns Reviews 

27
•
TrustScore 4.5 out of 5

4.7

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Rated 5 out of 5 stars

Pre-appointment I was sent all details of the engineer attending; Name, qualifications, vehicle registration. Duane arrived on time, was courteous, efficient and tidy. He also made sure I understoo... See more

Company replied

Rated 5 out of 5 stars

We have tried for 4 months to locate the cause of the damp patch with many different 'experts' telling us different things. David in the office was so helpful and arranged for the leak detection engin... See more

Rated 5 out of 5 stars

I'm very pleased with the service provided by Harmuns. Dan attended and found the leak quickly. He exposed and fixed the burst pipe under the concrete floor in the kitchen while causing the leas... See more

Company replied

Rated 5 out of 5 stars

We had a new boiler fitted but we were losing lots of pressure. Harmuns helped us detect a really difficult to find leak. We were so amazed with how technical it is to be honest! The whole process was... See more

Company replied

Company details

  1. Plumber

Written by the company

We are a specialist non-invasive water leak detection company. We use acoustic detection, trace gas equipment, thermal imaging, moisture meters, borescope cameras, salt analysis to find and fix your water leak.


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

27 reviews

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4.7

All reviews

(27)

5 reviews in the last 12 months

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Rated 5 out of 5 stars

Thank you Duane

Pre-appointment I was sent all details of the engineer attending; Name, qualifications, vehicle registration.
Duane arrived on time, was courteous, efficient and tidy.
He also made sure I understood what was happening.
First class service and highly recommended

21 April 2026
Unprompted review
Harmuns logo

Reply from Harmuns

Thank you very much for your kind review for Duane. We're always here if you or friends ever need us. Best regards, Harmuns.

Rated 5 out of 5 stars

Found and fixed my leak quickly!

I'm very pleased with the service provided by Harmuns.

Dan attended and found the leak quickly. He exposed and fixed the burst pipe under the concrete floor in the kitchen while causing the least amount of damage possible.

Fast, Efficient, Tidy, Friendly - Great work!

8 December 2025
Unprompted review
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Reply from Harmuns

Thank you for your very kind review. I am glad Dan was able to find, access and fix your leak in Hertfordshire. We are always here if you or friends need us. Best regards, David.

Rated 5 out of 5 stars

Excellent service from start to finish

Excellent service from start to finish. Nice people, high quality work. If you are facing a boiler pressure loss due to an underground leak like we did, then these are the guys to call. All the other reviews I read are right - it was found, fixed as sympatheticly to the surrounds as possible (which we were especially grateful for given we'd just laid new floors!) and for a reasonable fixed price. Highly recommend.

12 November 2025
Unprompted review
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Reply from Harmuns

Thank you very much for your kind review. I'm glad we were able to help with finding your central heating leak under the ground floor. We are always here if you or friends ever need us. Best regards, David.

Rated 5 out of 5 stars

As recommended by Co-Pilot

I had a water leak under the floor of my hallway and it was not obvious what was causing it. I used Microsoft Co-Pilot to recommend to me the best local service for leak detection in my circumstances, and it was Harmuns. Indeed, the service was great - the engineer arrived promptly, conducted a series of tests to identify the source of the problem and discussed with me the best solution. I would highly recommend Harmuns to others.

10 September 2025
Unprompted review
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Reply from Harmuns

Thank you very much for your kind review. It's nice to know that even A.I. thinks we're the best! I am glad we were able to help and we are always here if you or friends ever need us. Best regards, David.

Rated 5 out of 5 stars

I had a water leak in my kitchen and…

I had a water leak in my kitchen and rang Harmun, they made an appointment to come to fix it and that was what they done, took all my worries away.

17 September 2025
Unprompted review
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Reply from Harmuns

Thank you for your review. I'm glad we were able to help with leak detection. We are always here if you or friends ever need us. Best regards, Harmuns.

Rated 5 out of 5 stars

Top company

Great experience with company from the start to end. The survey was done very well and found the issue I was having for so long. I would happily use this company again an recommend them to anyone.

18 September 2025
Unprompted review
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Reply from Harmuns

Thank you for your very kind review - I am glad we were able to help. We are always here if you need us. Best regards, David

Rated 5 out of 5 stars

I cannot thank Harmuns enough for…

I cannot thank Harmuns enough for tracing the leak, which other companies failed to find. Pete the Harmuns engineer was very knowledgeable, and found the leak in under two hours. I would not hesitate to recommend Harnuns for other leak repairs.

24 July 2025
Unprompted review
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Reply from Harmuns

Thank you very much for your kind review. I will pass on your comments to the engineer. We are here if you ever need us. Best regards, David

Rated 5 out of 5 stars

Outstanding Service from Harmus Leak Detection!

I recently coordinated with Harmus Leak Detection on behalf of a client who was dealing with a persistent leak. I am thoroughly impressed by the outstanding service they provided throughout the entire process. From the initial consultation to the final repair, Harmus demonstrated the utmost professionalism and expertise.

Their team arrived on schedule and used advanced diagnostic tools to quickly identify the source of the leak, a task that had baffled others before. They were excellent in communicating their findings and the proposed solutions, ensuring that both our team and the client were well-informed and comfortable with the process.

What truly distinguished Harmus was their meticulous attention to detail and their commitment to minimal disruption. The investigation was executed efficiently, and they took great care to leave the site in impeccable condition. The client was extremely pleased with the outcome and the proactive approach Harmus took to ensure the issue was resolved promptly and effectively.

I wholeheartedly recommend Harmus Leak Detection for their reliability and exceptional service quality. They are definitely the go-to professionals for any serious leak detection and repair needs!

5 March 2025
Unprompted review
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Reply from Harmuns

Thank you. Your review is very kind and I am glad were were able to help. It's always nice to feel appreciated and I have passed on your terrific comments to the engineer. We are always here if you need us. Best regards, David at Harmuns.

Rated 5 out of 5 stars

I had a fantastic experience with this…

I had a fantastic experience with this company! They were incredibly friendly and efficient. We had a leak in our kitchen, and they quickly located and repaired it without any hassle. They left no mess behind, which was greatly appreciated. The process was quick and easy, and I couldn't be more satisfied with the service. A big thank you to Peter and David for their excellent work! I highly recommend this company.

10 March 2025
Unprompted review
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Reply from Harmuns

Thank you. That's very kind of you and I am glad we were able to help. We are always here if you or friends ever need us. Best regards Harmuns.

Rated 5 out of 5 stars

Trustworthy and very professional Could not be more happy to give this…

Could not be more happy to give this company a 5 star rating. Very professional service from the first phone call, through finding a leak to receiving a detailed and very comprehensive report. Having done some research into other leak detection organisations operating in Buckinghamshire, for me, Harmuns was the one I felt I could trust implicitly and I wasn’t disappointed.
Highly recommended!

21 October 2024
Unprompted review
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Reply from Harmuns

Thank you for your kind review, I'm glad we were able to help with leak detection. We are here if you or friends ever need us in Buckinghamshire or anywhere else in the S.E. Kind regards Harmuns.

Rated 5 out of 5 stars

Can’t recommend them enough

We had a new boiler fitted but we were losing lots of pressure. Harmuns helped us detect a really difficult to find leak. We were so amazed with how technical it is to be honest! The whole process was so stressful and we’d only just moved in - but Harmuns consulted us on various other issues and projects whilst they were here. They were an absolute pleasure to have around the house at a stressful time, genuinely lovely people and we can’t recommend them enough.

17 May 2024
Unprompted review
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Reply from Harmuns

Thank you for your kind review. We are here if you or friends ever need us. Best regards, David

Rated 5 out of 5 stars

I can’t thanks Harmuns enough

I can’t thanks Harmuns enough. Initially speaking with David and then Peter who came and detected and fixed the leak, both were very friendly and professional.
They helped with my insurance claims which was an immense help. I would not hesitate to recommend them to anyone who needs a trace and detect service.

26 April 2024
Unprompted review
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Reply from Harmuns

Thank you very much for your kind review. We are here if you or friends ever need us. Best regards, David

Rated 5 out of 5 stars

I had been without heating and hot…

I had been without heating and hot water for 3 weeks as my heatign contractor promised 3 times to turn up and didn't. Harmuns turned up the next daya as they said they would and found and fixed the leak with minuimum invasiveness and mess. Very friendly people ans I am warm again, can't recommend them more:)

25 April 2024
Unprompted review
Rated 5 out of 5 stars

10 out of 10 for excellent service!!

We’d just finished a major extension project on our home, and had to install a new and larger system boiler. Once commissioned, we noticed the boiler was consistently losing pressure, and as a consequence, the boiler eventually stopped working- in the height of winter!! This was an indication of a major leak in the system which needed urgent detection and fixing.

Thankfully our plumber contacted Harmuns Leak Detection and Peter came round to help find the leak. It was one of the most challenging leaks to find, and took two visits to find, but Peter was determined.

I particularly appreciate the fact that Peter was not only tenacious about finding the leak, but also very careful not to cause any damage to the property whilst doing so. He didn’t drill through walls or open up floorboards at all! Their leak detection device was fed through the side of a radiator pipe under the floor to search for the leak

He eventually found the leak and it was in a brand new section of the house with new and expensive tiles. My biggest fear was having to rip out and replace the tiles, and possibly ending up with some kind of mismatch! But Peter thought outside the box and found a way to access and fix the leak from the exterior of the house, without ripping up the tile flooring!!

What I love the most about their service is their ‘no leak no fee’ terms. Although if you have a leak, you really want to find it, and you really want to hire Harmuns Leak Detection!

10 out of 10 for excellent service!!

24 January 2024
Unprompted review
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Reply from Harmuns

Dear Sarah, thank you for your really generous review. It was a terrific job, really challenging and Pete was so pleased that there was no internal disruption at all to your brand new extension when fixing the leak. We are here if you or friends ever need us. Best regards, David

Rated 5 out of 5 stars

Amazing service

Amazing service! Peter who came found the leak quickly and fixed it with no problem. Fully recommend this company

8 February 2024
Unprompted review
Rated 5 out of 5 stars

Burst pipe in screed floor…

Had a drop in pressure in my heating system but the pipe work is in screed floor so done some research and called Heatsense to find leak.Glad I did as from the first phone call put me some what at ease
The engineer who turned up was very knowledgeable and done heat and gas tests and found a leak in my lounge and carefully exposed the burst pipe in the hard concrete floor and repaired it.
Many thanks to all the team especially Peter the engineer and will have no hesitation in calling them again

12 December 2023
Unprompted review
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Reply from Harmuns

Thank you Barry, really appreciate your kind words. Glad we could help. Best regards

Rated 5 out of 5 stars

Great service and good value for money

Great service and good value for money. Peter was really helpful, quickly identified the issue and took time to explain it all to me. Everyone I spoke to were professional, friendly and helpful. I wouldn't hesitate to recommend Heatsense to friends.

30 November 2023
Unprompted review
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Reply from Harmuns

Thank you for your kind words, we really appreciate you taking the time to leave a review. Best regards

Rated 5 out of 5 stars

Trace and Access Service

I took the services of Heatsense for the trace and access. I would like to thank Heatsense and Peter for providing a good quality service. Peter walked us through every step of the process in detail so we could understand the nuances of Trace and access. Thanks Peter and Heatsense team.

19 October 2023
Unprompted review
Rated 5 out of 5 stars

Heatsense are brilliant.

We have tried for 4 months to locate the cause of the damp patch with many different 'experts' telling us different things. David in the office was so helpful and arranged for the leak detection engineer, Peter, to phone me and advise me. Peter arrived today at 9am promptly and had found the small, slow leak within an hour. His work was careful, neat and the repair perfect. I would recommend Heatsense wholeheartedly. Very professional, excellent value and such helpful people.

25 October 2023
Unprompted review
Rated 5 out of 5 stars

From the first phone call to the last…

From the first phone call to the last and throughout the entire visit the level of customer service was excellent. It was a relief to have a technician with so much experience and expertise attend the house to find our mysterious leak. Will definitely call-on again if and when we experience any more problems.

20 September 2023
Unprompted review

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