Plumbing Company london | Boiler pressure drops when heating off
Understanding Boiler Water Pressure – Boiler losing pressure
Maintaining the correct pressure is crucial for efficiently operating your central heating system. The pressure gauge on your boiler might not be something you think about often, but it plays a significant role in ensuring your home stays warm and cosy.
This blog post will explore why boilers lose pressure and how to identify the causes and the necessary fixes. Let’s dive in!
Heating System Pressure Loss Due to Water Leakage
One of the most common reasons is water leakage. Even a tiny leak can cause significant problems.
Water escaping from pipes, radiators, or even the boiler itself can lead to a gradual decrease.
If you’ve noticed damp patches or your pressure gauge indicates a lower pressure than optimal, it’s time to investigate the heating pipework, radiator valves, and even the boiler casing.
Is Your Boiler Losing Pressure? Here are six Common Causes and fixes:
Faulty Pressure Relief Valve
A faulty pressure relief valve can result in pressure drops in your heating system. This valve is designed to release excess pressure when it becomes too high, preventing dangerous situations.
However, if the valve is malfunctioning, it might lead to constant loss. To fix this, consult a GasSafe engineer to replace the faulty pressure relief valve and ensure your safety.
Expansion Vessel Issues
Modern gas boilers have expansion vessels that absorb excess water as they heat up. If the vessel is faulty, you can experience similar problems.
Re-pressurizing or replacing the expansion vessel is the solution to this issue.
Air Locks
Airlocks can block water circulation within the system, causing the same problem. The sign of the airlock is gurgling noises.
Releasing air through the air vent or bleeding the radiators can alleviate this problem and restore the correct pressure.
Leak in the System
Leaks in the pipes, radiators, or boiler are common culprits. Even the tiniest leak can lead to a gradual decline in the system.
Detecting and repairing these leaks promptly is essential to prevent further damage and maintain proper boiler pressure.
Faulty Pressure Gauge
A faulty gauge can lead to inaccurate readings, making determining if your boiler is losing pressure challenging.
If you suspect a faulty gauge, consult a professional to repair or replace it.
Cold Water Filling Loop
The filling loop is used to re-pressurize the boiler with cold water. It can cause overpressurization if not properly closed after use.
Ensure the filling loop is closed correctly and is not causing the pressure to drop.
The Good News
The good news is that a qualified gas-safe engineer can identify and fix most boiler issues.
Regular maintenance, proper usage, and addressing issues promptly can keep your boiler running smoothly and your home warm and comfortable.
Remember, it’s always best to consult a professional regarding boiler pressure and heating system concerns.
Whether it’s a simple fix or a more complex repair, a Gas Safe engineer can provide expert advice and ensure the safety of your home’s heating system.
If you suspect your boiler is losing pressure or facing other issues, don’t hesitate to ask for a free quote from MML Plumbing.
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