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

Areas We Cover in Hertfordshire

Harmuns cover all of Hertfordshire

Our gas-safe engineers cover all of Hertfordshire, from Watford to Stevenage and from Hemel Hempstead to Bishop’s Stortford. Wherever you are in Hertfordshire, if you have a difficult to locate water leak, we can help.

We are a non-invasive water and pipe leak detection company, we use specialist equipment, such as acoustic detection, tracer gas equipment, moisture meters, thermal imaging, salts analysis, borescope cameras to find your awkward leaks.

Whether you have a boiler losing pressure, or a water meter spinning despite every outlet being switched off, or your water company contacts you to say you are responsible for a water leak, we can help.

We offer a number of services because everyone's needs are different.

  • Full leak survey: Ideal for anyone with a difficult to find water leak
  • Insurance Leak Survey: Ideal for anyone using their insurance trace & access policy.
  • Pressurised Pipe Survey: Ideal for those who want to rule out a leak or are unsure.
  • Homebuyer Pipe Survey: Ideal for people moving home or buying a property.

A quality service that you can trust

We use specialist non-invasive equipment to find your leak, including acoustic detection, tracer gas detection, thermal imaging, moisture meters, salts analysis, borescope cameras.
Our engineers are highly experienced, gas-safe registered and cover all of London.
So for all difficult water leaks in London, give us a call on 01753 378569

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.