Client Location – Dromore, County Down
The Problem
A homeowner in Dromore contacted B Keenan Heating and Plumbing after their heating system pressure would not hold. The system required constant topping up, indicating a significant fault within the pipework.
With no visible leaks inside the property, the client was concerned about a hidden issue and requested professional leak detection to prevent potential damage to their home.
Leak Detection Investigation
We carried out a focused heating system leak detection assessment, starting with all visible components including the boiler, radiators, and accessible pipework. As no internal issues were found, we expanded the investigation to include adjoining areas—particularly the garage, where pipework was routed beneath the floor.
Through efficient and targeted leak detection, we quickly identified signs of water escape beneath the garage floor, allowing us to pinpoint the problem area without unnecessary disruption to the main living space.


The Cause: Blown Plastic Fitting
Upon accessing the affected area, we discovered that a plastic fitting had blown apart under the garage floor. This failure caused a significant leak, leading to rapid pressure loss within the heating system.
Fortunately, because the leak occurred in the garage and not within the main house, there was no internal water damage. However, without prompt leak detection, the issue could have worsened or spread further into the property.
We are seeing an increasing number of these plastic fitting failures, particularly under floors where issues can go unnoticed until pressure problems arise.
The Solution
Once identified, we isolated the system and replaced the failed fitting with a secure and reliable connection. The repair was completed efficiently to minimise downtime and disruption.
We then carried out full system pressure testing and final leak detection checks to ensure the heating system was fully sealed and operating correctly.
The Outcome
- Fast and accurate leak detection
- Blown plastic fitting located and replaced
- Heating system pressure fully restored
- No internal property damage due to early intervention
The client was relieved that the issue was resolved quickly and that the leak had not caused damage inside the home.
Key Takeaway: Leak Detection Prevents Escalation
When a heating system cannot hold pressure, it is essential to act quickly. Hidden leaks—especially under floors—can escalate rapidly if not identified through professional leak detection.
B Keenan Heating and Plumbing specialises in fast, efficient leak detection across Dromore and surrounding areas, ensuring faults are found and fixed before they cause serious damage.
If your heating system is losing pressure, contact us today for expert leak detection and repair.