Signs your boiler is on its way out

Boiler malfunction

Signs your boiler is on its way out

As winter approaches, the heating comes on more and more. Or does it? If your boiler is on the way out, you’ll end up feeling cold, showering without hot water, and paying costly repair fees. Don’t let your boiler malfunction for too long; invest in regular maintenance or a new one today if you notice any of these warning signs.


A telltale sign is if your boiler is noisy. If it creaks and groans then it’s probably past its sell-by date, and you need to install a new system. Not only can older models be loud enough to wake the dead, but they can also be costly. The extra effort and power they require can increase your energy bills. Its inefficiency could cause it to work much slower which could leave your house colder for longer.

What the different sounds might mean:

  1. Gurgling: Air in the pipes or the radiators may be causing a gurgling sound, possibly due to bleeding your radiators.
  2. Knocking in the pipes: Hot water passing through the pipes can cause this noise as the heat causes the pipes to expand.

Noises can also be caused by low water pressure. So if you get in the shower and the water takes a while to warm up, this might be why. If this is the case, you need to replace the valve. It could also be indicative of a leak.


Leaks are never a good sign. Aside from being a health and safety hazard, a leaky boiler is a red flag when it comes to efficiency. If you suspect there’s a leak, don’t open it up yourself, and contact a professional.

You might notice unusual smells in your home – this may be a sign of a leak too. If you notice a smell, it’s critical that you get in touch with an expert to solve the issue as it could be deadly.

Another noteworthy sign is if your boiler switches itself off. Again, this could point to low water pressure as well as:

  1. Issues with the thermostat
  2. Poor water flow
  3. Water not circulating correctly

Pilot light

Most older models will have pilot lights. If this boiler malfunction continues, even after repairs, this is a big sign of a boiler that needs upgrading. Problems with the pilot light may be caused by age, but also if soot from the burner builds up. This could affect its ability to perform properly.

These points are only a handful of explanations as to why your boiler might be starting to break. If you notice one or more of these signs, be sure to contact a professional to take a look at your system.

If you think you have a problem with your boiler, need repairs, or need to invest in a new system, get in touch with GOS Heating today on 01772 734 966. Don’t wait until the winter takes full force; make sure your boiler is working now.

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