This page is here to help homeowners in Ealing who may be experiencing a central heating leak, including boiler pressure loss, leaking radiators, repeated system top-ups, and concealed heating pipework. The Leak Hunter specialises in locating and repairing central heating leaks, using non-invasive techniques to trace the source accurately before recommending the most appropriate solution.
The Leak Hunter is a specialist leak detection company, so if your symptoms relate to a different type of leak, we can still help. You can explore our other leak detection services using the menu above, or contact us and we’ll point you in the right direction.
If your boiler keeps losing pressure, radiators are heating unevenly, or you’re topping up the system more frequently than normal, there’s a strong chance you have a hidden heating leak. Many properties in Ealing, including Victorian terraces, modern apartments, maisonettes and converted houses, have heating pipes buried beneath screed, behind plasterboard, under tiles or running beneath timber flooring — making leaks hard to locate without specialist equipment.
At The Leak Hunter, we provide accurate, non-destructive central heating leak detection Ealing, using advanced technology to find hidden leaks quickly, precisely and with minimal disruption. As part of our wider central heating leak detection services across London, our engineers regularly work on properties throughout the capital with similar construction and heating layouts.
Price based on a standard domestic system. Larger or more complex systems will be discussed with you in advance.
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Not sure what’s causing the issue? Tell us what you’ve noticed and we’ll guide you on the next step.
Why Specialist Central Heating Leak Detection Matters
Central heating pressure loss is rarely resolved by replacing visible components alone. In many cases, concealed pipework beneath floors or within walls is the underlying cause.
Repeated topping up may temporarily restore pressure, but it does not confirm the source of the problem. Replacing parts without structured testing may sometimes appear to solve the issue — or it may not. What is certain is that repeated labour, lifted flooring and unnecessary component replacement increase cost before the true cause is confirmed.
Specialist leak detection focuses on accurate diagnosis first.
The Leak Hunter, central heating investigations follow a defined diagnostic sequence.
At The Leak Hunter, central heating investigations follow a defined diagnostic sequence.
Before any flooring is lifted or pipework exposed, we establish where pressure loss is occurring within the sealed heating circuit.
We begin with visible system checks and boiler-related assessment. If a component fault is identified, we confirm whether it fully accounts for the pressure loss. Even where a fault is present, the wider heating circuit is assessed to rule out concealed leakage.
Only once preliminary assessment is complete do we progress to targeted non-destructive testing.
Every stage is evidence-led and deliberate — not exploratory.
Our objective is clear: Confirm the true cause of pressure loss before any intrusive access begins.
Structured diagnosis prevents unnecessary lifting, repeated labour and wasted expenditure.
Not sure what’s causing the issue? Our engineers can review the symptoms and advise on the best next step.
25+ Years’ Experience With over 25 years’ hands-on experience, our team has located and repaired thousands of hidden leaks across domestic and commercial properties.
Specialist Leak Detection We use professional non-invasive acoustic, tracer gas and thermal equipment to pinpoint leaks accurately before any access work begins.
Fixed Price Investigations Our investigations are offered on a fixed price basis, so you know the cost upfront with no hidden extras.
Gas Safe & WaterSafe Approved Our engineers are Gas Safe registered and we are a WaterSafe approved company, working to recognised national safety and installation standards.
Clear Diagnosis Before Repairs Every investigation confirms the exact source of the leak first, ensuring the correct repair is carried out once identified.
12-Month Warranty All completed work is backed by a 12-month warranty for added reassurance.
When Pressure Loss Requires Specialist Investigation
If your heating system in Ealing is losing pressure regularly, the system is no longer sealed.
You may require specialist leak detection if:
Pressure drops every one to two days
Radiators heat unevenly
The boiler locks out on low pressure
Warm areas appear on solid floors
Damp patches form near pipe routes
You are frequently topping up via the filling loop
Leaving a concealed heating leak unresolved increases the risk of internal corrosion, timber damage, screed deterioration and rising energy costs.
Early diagnosis protects both the property and the heating system.
How We Locate Your Heating Leak
Every investigation follows a defined diagnostic sequence.
We begin with visible system checks, including radiator valves, pressure relief components and accessible pipework. Where appropriate, we assess whether symptoms may relate to expansion vessel performance or other boiler-related pressure faults.
If a boiler-related issue is identified, it is evaluated carefully to confirm whether it fully accounts for the pressure loss. Even where a fault is found, the wider heating circuit is assessed to ensure there are no secondary or concealed leaks contributing to the issue.
Where concealed leakage is suspected, we deploy specialist non-invasive techniques.
Thermal Imaging
Identifies abnormal heat patterns and concealed pipe routes beneath floors and walls.
Acoustic Leak Detection
Sensitive equipment isolates the sound frequency of escaping pressurised water.
Tracer Gas Testing
A safe, inert gas is introduced into the system and detected at the precise escape point, even beneath screed or solid flooring.
Pressure and Isolation Testing
Determines which heating circuit is affected before access is undertaken.
This structured methodology ensures the cause of pressure loss is clearly established before any flooring is lifted or structures opened.
Underfloor Heating Leak Detection
Underfloor heating systems form part of the sealed central heating circuit. When leaks develop within buried underfloor pipework, pressure loss may be the only visible symptom.
Common indicators include:
Boiler pressure dropping despite topping up
Cold or unevenly heated floor areas
Sections of the system failing to warm fully
Unexplained damp patches or floor discolouration
Increased energy usage with reduced heating efficiency
Because underfloor pipework is embedded beneath screed or concrete, uncontrolled floor removal can significantly increase disruption and cost.
We use thermal imaging, acoustic detection and tracer gas testing to confirm the precise leak location before any access begins.
Not sure what’s causing the issue? Send us a photo on WhatsApp and we’ll take a look first.
Once the source of pressure loss has been clearly established, we provide a fixed repair price before any intrusive work begins.
You are given a full explanation of the findings and the proposed scope of work. This includes clarity around whether the issue relates to heating pipework, a boiler-related component or another part of the system.
Where controlled floor access, screed opening or component replacement is required, this is explained in advance. No flooring is lifted and no structures are opened without prior agreement.
We carry out confirmed heating leak repairs throughout Ealing, limiting access strictly to the identified fault area.
If the confirmed cause relates to a boiler component — such as the expansion vessel or another pressure-related fault — corrective work can be carried out safely and compliantly, as we are fully Gas Safe registered for domestic natural gas and LPG systems.
Following repair, the affected section is pressure tested. The wider boiler and heating circuit are then verified before the system is refilled and tested under operating conditions.
Only once the system is confirmed leak-free is the investigation considered complete.
All completed repair work includes a 12-month warranty.
Central Heating Leak Detection – FAQs
Why does my boiler keep losing pressure? In many cases, it is due to a concealed leak within the heating circuit, although visible components and boiler-related causes should always be assessed first.
Can leaks occur beneath concrete or screed floors? Yes. Heating pipework frequently runs beneath solid floors and requires specialist detection methods.
Will large areas of flooring need to be lifted? No. Access is limited strictly to the confirmed leak location.
Do you repair the leak once found? Yes. Repairs are carried out once the source has been identified and agreed.
Do you offer fixed price investigations? Yes. Investigation costs are agreed before attendance and explained clearly before any repair work begins.
Insurance, Compliance & Professional Standards
All our work is carried out under comprehensive insurance cover and in accordance with recognised national safety and water system standards.
As Gas Safe registered engineers and a WaterSafe approved company, we are authorised to assess, isolate and repair domestic heating and water systems safely and compliantly.
Where required, structured trace and access documentation can be provided for insurers, clearly detailing the confirmed fault location, the diagnostic process undertaken and post-repair pressure verification.
Every investigation concludes with confirmed system integrity — not assumption.
What Happens When You Book
When you contact The Leak Hunter, we first discuss the symptoms you’re experiencing and confirm the most appropriate investigation. You are then provided with a fixed price for the investigation before attendance is arranged.
On arrival, we begin by assessing the system and confirming where the issue is most likely to originate. Visible components are checked first before specialist non-invasive leak detection methods are deployed where required.
Once the precise leak location is confirmed, we explain the repair options and agree controlled access before any floor, ground or pipework is opened.
Our objective is always the same: accurate diagnosis first, controlled repair second.
Book Central Heating Leak Detection
If your heating system continues to lose pressure, a structured investigation provides clarity before unnecessary work is carried out.
Arrange fixed price central heating leak detection and receive confirmed diagnosis with a clearly defined repair plan.
Fixed price agreed before attendance. Precise access. Warrantied repair.
Ealing forms part of The Leak Hunter’s established service area. Our applicable fixed-price leak detection services are available throughout our standard coverage area, with no additional mileage or travel supplements based on distance from our base.
Looking for Something Different?
If you’re looking for a different type of leak investigation, browse our All Services page to explore our specialist leak detection services. If you’d like to check whether we cover another town or area, visit our Service Area Directory to browse all of the locations we serve.
Ready to Book Your Central Heating Leak Investigation in Ealing?
We’ll identify the source accurately using non-invasive methods and confirm your fixed price before attending. No guesswork, no unnecessary disruption.
