Understanding the Causes of Pressure Loss in Boilers

by | Jan 6, 2024 | Uncategorized

At CJT Services, we specialise in gas boiler repair in Belfast, and we understand how perplexing it can be when the pressure in your modern boiler drops unexpectedly. Normally, these systems are designed to shut down if the pressure falls below a certain level. However, given that these systems are sealed, the question arises: how does the boiler lose pressure in the first place? Various factors, including leaks and malfunctioning components, can lead to this issue, and we’re here to delve into the most prevalent reasons behind this decrease in pressure.

In addition to identifying these causes, we’ll also provide an overview of what boiler pressure actually is and the steps you should take if you notice a drop in your boiler’s pressure. Knowing how to handle such situations is crucial, and there are times when the only solution is to upgrade your boiler. Our expertise in servicing and repairing gas boilers in Belfast positions us ideally to guide you through these scenarios.

What Is Boiler Pressure?

Boiler pressure refers to the force exerted by the water circulating within your boiler system. This pressure is essential for the smooth operation of the system, as it facilitates the flow of water through the pipes and enables it to reach the taps in your home when required. The pressure within the boiler is the driving force that moves water throughout your heating system. Without adequate pressure, the boiler would fail to function properly, resulting in a lack of hot water and heating in your home.

The Impact Of Low Boiler Pressure

When the pressure in your boiler falls below the optimal level, the efficiency and functionality of the system are significantly compromised. The reduced pressure means that the boiler struggles to circulate water effectively throughout the system. As a consequence, the boiler has to exert extra effort to heat your home, leading to increased energy consumption.

This heightened energy usage can, in turn, lead to a noticeable rise in your energy bills. However, it’s important to note that low boiler pressure, while affecting performance, does not directly cause damage to the boiler itself nor does it shorten its expected lifespan.

What Should You Do If Your Boiler Is Losing Pressure?

At CJT Services, we are experts in gas boiler repair in Belfast and understand the challenges of a boiler losing pressure. If you find your boiler’s pressure dropping, there are steps you can follow to restore it to the normal range, typically between 1 and 1.5 bar. Repressurising your boiler system is often a straightforward process:

  • Ensure your boiler is turned off.
  • Inspect the filling loop to make sure it’s intact and functional.
  • Open the valve, allowing water to enter the system.
  • gauge, waiting for it to reach 1.5.
  • Once the desired pressure is achieved, close both valves.
  • Reactivate your boiler.

However, it’s crucial to remember that a loss of pressure usually indicates an issue with your system. While repressurising may provide a temporary fix, it’s often a sign of an underlying problem. We recommend checking the following items methodically. If the issue persists, it’s advisable to consult a Gas Safe-registered engineer.

Our team, specialising in servicing and repairing gas boilers in Belfast, is equipped to identify and resolve such issues, whether it calls for a repair or a complete boiler replacement.

Is Your Boiler Leaking?

We often address concerns about potential boiler leaks. If you notice puddles or an unusual amount of water near your boiler, it’s a strong indication of a leak within your boiler system. While a burst in the pipework is rare, the most likely spots for leaks are at the joints. Pay special attention to the areas around radiators, particularly where the pipes enter and exit. If you spot any standing water, it’s advisable to contact a professional plumber for an inspection.

However, not all leaks result in visible puddles. Slow leaks may evaporate before they accumulate, which is particularly common during warmer months. Signs to watch for include unusually clean areas on dusty floors or black marks indicative of persistent dampness. It’s also wise to inspect ceilings for any stains, especially near where they connect with walls. While central heating system leaks are generally not massive, they can gradually reduce your boiler’s pressure.

For more detailed guidance on handling a leaking boiler, consult our comprehensive guide.

Damages to the Boiler Pump

When dealing with gas boiler repair in Belfast, one common issue we encounter at CJT Services is damage to the boiler pump. A damaged boiler pump can significantly reduce the efficiency of your system and struggle to maintain the necessary pressure. Signs of a potentially damaged boiler pump include the pump feeling excessively hot, visible water leakage, or the water in the pump failing to heat up.

Normally, issues with the boiler pump should be identified during your annual boiler inspection. However, if you experience a sudden drop in pressure, it might be a sign of pump-related problems. If you’re concerned that your boiler pump may be damaged, it’s crucial to consult with a professional. Our expertise in gas boiler repair in Belfast means we’re well-equipped to assess and address any problems with your boiler pump, ensuring your system operates efficiently and safely.

Is The Boiler Pressure Too High?

It may seem counterintuitive, but setting the boiler pressure too high can actually lead to issues of low pressure. Your system is equipped with a pressure relief valve, which is a safety feature. Typically, the water outlet of this valve is located outside your home, often behind the boiler’s position. When the system is cool, and the pressure is slightly higher than recommended, activating the boiler can cause the pressure to increase further. To safeguard the system, it will release water through this valve.

However, after the system cools down post-operation, you might observe a significant drop in pressure. This fluctuation is why it’s crucial to maintain the system at the recommended pressure level. Overfilling or setting the pressure too high can lead to these kinds of issues, affecting the overall efficiency and safety of your boiler. For optimal performance and to prevent pressure-related problems, always adhere to the advised pressure settings for your boiler.

Contact CJT Services for Expert Gas Boiler Repair in Belfast

If you’re in need of professional gas boiler repair in Belfast, don’t hesitate to reach out to us at CJT Services. Our experienced and Gas Safe-registered engineers dedicate themselves to delivering top-notch service and efficient solutions for all your boiler needs. Whether it’s routine maintenance, emergency repairs, or a full system upgrade, we have the expertise and tools to ensure your boiler operates safely and efficiently.

Contact us today to schedule an appointment or to discuss your boiler concerns. Our friendly staff is ready to assist you with any queries and offer advice tailored to your specific situation. Trust CJT Services for reliable and expert gas boiler repair in Belfast. Your comfort and safety are our top priorities.