Heating System SOS: Fixing The Most Frequent Problems

by | Nov 20, 2023 | Uncategorized

Encountering issues with your central heating can be quite challenging, especially when you need it to work efficiently. If you’re facing problems such as a malfunctioning radiator, pipework, unusual noises from your central heating, or a complete boiler breakdown, consider reaching out for a heating system repair in Belfast from ourselves here at CJT Services to get expert assistance. We aim to identify and resolve the common central heating issues promptly, ensuring that your central heating system operates seamlessly.

Central heating plays a crucial role in maintaining the comfort of your home; hence it is vital to ensure it functions effectively for an extended period.

Here are some prevalent central heating problems, along with their likely causes and potential solutions:

1. Boiler Problems

Pilot Light Going Out Repeatedly

The pilot light acts as a continuous gas flame within your boiler, ensuring it is always ready to ignite. A frequent extinguishment of the pilot light is a prevalent issue and might be attributed to simple factors like a gust of wind blowing out the flame or an accumulation of debris on the gas nozzle.

Another possible reason could be a malfunctioning thermocouple that hinders the gas supply. The thermocouple operates as a protective component in the boiler, perceiving temperature variations of your pilot light and ascertaining whether the pilot light is active or not. If this is the case you will need a heating system repair in Belfast.

  • Firstly, ascertain the functionality of your other gas-driven appliances. If they aren’t operational, reaching out to your gas provider is advisable. If there’s no issue with your gas supply, attempt to rekindle the pilot light by adhering to the directives provided in the boiler’s instruction manual by the manufacturer.
  • You can generally locate these instructions on the manufacturer’s website if they are misplaced. This problem predominantly occurs in older boiler models since contemporary ones are equipped with electronic ignition systems, omitting the need for pilot lights. If the pilot light complication continues, contemplating the installation of a new boiler might be a necessary consideration and you will need a heating system repair in Belfast.

Unusual Boiler Noises

Unusual noises such as gurgling, whistling, or banging emanating from your boiler often indicate an issue, most commonly, air trapped in the system. Other potential causes could include low water pressure or a malfunctioning pump. It’s crucial not to overlook these noises, as they typically signify an underlying fault within the boiler or heating system. The specific type of sound and its origin can give clues regarding the nature of the problem.

  • If your boiler emits a humming or vibrating noise, consider examining the settings or inspecting the connectors. Since these sounds could indicate a more severe underlying issue, it might be wise to consult your supplier if uncertainty persists.
  • In cases where the pipes emit a gurgling sound, bleeding your radiators might prove effective in resolving the issue. Alternatively, the noise might be due to a frozen condensate pipe (refer to further guidance below).
  • A knocking sound might result from the natural expansion and contraction of the heating pipes during operation. This is a typical occurrence, but ensuring that the pipes aren’t excessively secured to floorboards or joists might be helpful in mitigating the noise.

Inadequate Boiler Pressure

When the pressure gauge on your boiler displays a reading below one, it typically indicates a potential issue that requires attention.

  • Begin by examining the system for any signs of leakage. Should you discover a leak, it is crucial to contact a professional engineer promptly for a repair.
  • If no leaks are evident, you might consider attempting to re-pressurise the system. This can be done by meticulously adhering to the guidelines outlined in the boiler manufacturer’s instruction manual. Should the issue persist despite these efforts, soliciting the expertise of an engineer is advisable, as there might be a malfunctioning component within the system requiring professional attention.

Boiler’s Non-responsiveness to the Thermostat

Occasionally, a malfunctioning thermostat could be the culprit behind issues in an otherwise well-operating system.

  • Begin by inspecting your thermostat. Unintentional adjustments, like an accidental knock, could alter or deactivate its settings. If, upon review, the thermostat settings appear correct but the temperature regulation is inconsistent, it might be an indication that your thermostat necessitates replacement. Reach out to our team for a heating system repair in Belfast, they will be able to look at your thermostat and replace it.

2. Radiators

Cold Patches

If you notice that your radiators are not adequately warm or only a few are functioning properly, it’s likely due to the presence of air in the central heating system.

  • Initiate the resolution process by bleeding the radiators. Should there be no discernible improvement post-bleeding, it could signify that the system necessitates a comprehensive flushing. This procedure should be exclusively conducted by a certified central heating engineer to ensure effectiveness and safety. Reach out to us today for a heating system repair in Belfast.

3. Pipework


Over time, water in pipes and radiators can react with metal and other materials, leading to corrosion and the formation of sludge. This sludge settles at the bottom of radiators and pipes, creating cold spots and blockages that prevent proper water circulation, meaning your system has to work harder to heat your home. This not only makes your system less efficient, leading to higher energy bills, but it can also lead to increased wear and tear on the boiler and the pumps, potentially causing breakdowns.

  • Annual checks and maintenance can help identify when a full system flush is necessary. It’s a task that should be performed by a professional due to the complexity and potential for damage if done incorrectly. Regular system flushing is an integral part of keeping your central heating system running at peak performance.

Leaking Pipes

Leaks within a central heating system are a frequent issue and can be deceptive in their initial subtlety. Small leaks may not immediately grab attention; however, their potential to inflict considerable damage over time is significant. Often, these leaks are the silent adversaries of home maintenance, slowly eroding the integrity of a structure, leading to problems that can be costly and complex to rectify.

  • Identifying the Source: Carefully examining the vicinity of any dampness or auditory signs of water to pinpoint the leak.
  • Immediate Containment: If the leak is accessible, placing a container to catch dripping water can mitigate immediate water damage.
  • Shutting Off the Water Supply: If the leak is severe, it might be necessary to turn off the home’s water supply to prevent further damage until a professional can assess the situation.
  • Consulting a Professional: For a central heating system, a certified heating engineer should be called to assess and repair the leak. DIY repairs can be risky and may lead to more extensive damage if not done correctly.
  • Long-term Solutions: After a repair, long-term solutions such as pipe insulation, regular maintenance checks, and monitoring humidity levels in the home can help prevent future leaks.

Frozen Pipes

The onset of cold weather can bring a host of challenges for your home’s central heating system, with one of the most critical being the risk of pipes freezing. This is especially true for the condensate pipe, which is a component of modern condensing boilers. These pipes carry condensation away from the boiler to the outside drain, and due to their location, they are particularly vulnerable to freezing temperatures.

  • Online, you can find tutorials that provide guidance on safely thawing a condensate pipe. If you feel uncertain or uncomfortable performing this task independently, it is advisable to contact a registered engineer who can professionally and safely thaw the condensate pipe for you.

Encountering Issues With Your Heating System?

Don’t worry, you’re not alone! At CJT Services, we specialise in heating system repair in Belfast, making sure your home or business stays warm and cosy. We believe in taking action before problems escalate.

By choosing us, you save not only money but also avoid unnecessary stress. Our range of services includes everything from regular boiler check-ups and speedy repairs to creating and installing complete heating systems.

With a wealth of experience, we are well-equipped to handle both everyday maintenance and unexpected emergencies. Your satisfaction is our priority, and we aim to exceed your expectations by delivering top-quality work paired with exceptional customer care. So why wait? Let us take care of your heating worries.