Is your central heating system dropping pressure? You might have a hidden leak!

Plumbing Leak Detection

A full leak detection to find and fix your leak
A copper pipe that has been damaged in the middle

Full leak detection

We use a range of equipment to find and fix your leak. Every job is different, and our plumbing leak detection engineers will bring their experience to deal with it in the most efficient way. Our engineers are all highly experienced and qualified time-served gas-safe engineers who know how to find and repair plumbing leaks.

They will use a combination of acoustic equipment, trace-gas, thermal imaging and moisture meters to build the evidence. Each engineer is only booked for 1 plumbing leak detection job per day, which means they are never under time pressure to be elsewhere. They start at 9am and methodically go through the process building the evidence. It is quite normal for our engineers to start a job with there being no evidence but whether it’s a central heating leak, a leak on underfloor heating or a mains leak, our engineers have the skills and experience to deal with it.

A picture on a camera showing a copper pipe
A man smiling whilst looking at his phone

Customer service

You will have a dedicated point of contact within the office and we pride ourselves on our customer service. Before booking the plumbing leak detection visit, the member of staff will talk through your plumbing issue at length and offer advice. If appropriate the booked engineer will call you before the visit to get an even better understanding or if you want to speak directly to the engineer anyway then we are happy to facilitate that. We don’t take credit card details or ask for any form of payment beforehand.

After the job

After the job we will send you an invoice and you can either do a bank transfer or we can take a credit card payment over the phone. A few days later we will send you a full report with photos and if appropriate, videos. You can send the report to your Insurance company if you are going that route, otherwise you have the report for your own knowledge of what was done. All the reports are written in clear concise English.

A woman wearing glasses looking at a piece of paper

Here are some common questions that pop up about Plumbing Leak Detection

We cover most of the South-East of England, including Central and Greater London.
Yes, please ask the office about it.
Yes, all engineers are highly qualified, time served gas-safe heating engineers with years of leak detection experience.
Yes, we will send you a full report with photos. You can send it to your Insurance company if you are claiming.

A quality service that you can trust

Highly experienced engineers

Best detection equipment in the UK

Highly customer focussed office

Transparent fees and no hidden costs

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.

Harry M

Harmuns really led the way on a 10-bedroom property that had bamboozled other firms. Despite the complexity, they clearly and concisely worked out what was wrong and planned out a successful course of action. They are our go to when we need specialist leak detection.

Chris Fraser
Coombe Residential specialises in the luxury residential market across south west London.

We found Harmuns on line and were so glad we did. We had a suspected leak under the tiles in our hallway/kitchen floor. The team were friendly and efficient; the issue was investigated thoroughly, located and repaired promptly. Highly recommend this company.

Rose A
Fulham, London

I was very impressed with the end to end customer service of this job. From the fast and attentive service from David initially to discuss the work and then Pete’s diligent hard work across 1 and a half days to identify and then fix the leak. Pete was respectful of our working from home and facilitated conversations when it was convenient to do so. He explained his findings every step of the way and tidied up well after the work was completed. I hope never to need their services again (!) but I can at least have the confidence that if we get a leak in the future we are in excellent hands.

Adam S

I couldn’t recommend Harmuns more highly. We had damp issue which pointed towards a burst or leaking pipe and we engaged Harmuns to carry out a water leak survey and possible fix. Stephen the engineer who carried out our trace and access investigation could not have been more thorough; he went above and beyond to find the cause of our issue. From start to finish Harmuns team were friendly, professional and extremely knowledgeable. We will be using them for any similar issues going forward.

Sean H.
Brixton, London

Excellent service. The engineer was prompt and thorough and was very reassuring. He located the leak and was able to access and fix it with the very minimum of damage, leaving the house clean and tidy and advising us how to dry the affected area. He checked the heating system was working properly and there were no further leaks before leaving.

Judith H.

Contact us for hidden
leak detection!

We fix the leaks
that you can't find

We are not an emergency plumber. If you have a visible leak, please contact your local plumber.