• L Murphy (Ops Manager)

Common Boiler Problems: Causes and Quick Fixes


While we always recommend calling a trained heating engineer in Halifax to help with boiler problems, many technicians charge by the hour. Considering this, if you are able to diagnose the issue and take a few preliminary steps before you book a repair, you could save the engineers time and cut the cost of your service.


Check out our troubleshooting guide to find out what the most common boiler problems are, how to diagnose them and what steps you should take before you call an engineer.


Radiators Do Not Heat

Cause: If your radiator is hot at the bottom and cold at the top, this may be due to a buildup of air, rust in the pipes, or an issue with the pump (i.e. the hot water is not being circulated properly).


What to do: The first thing you should do is bleed your radiators to remove any air that is trapped in the system. If this does not improve the heating issues, you may require a power flush.


Boiler Turns Off

Cause: This can happen for a number of different reasons, including low water pressure, thermostat issues, or if you have a frozen condensate pipe, air in the system or a faulty pump.

What to do: If it is cold outside, you may need to thaw your condensate pipe. You can also try bleeding your radiators to remove any air in the system. If you notice that your water pressure is low, you can phone your supplier to see if there is any work going on in your area.


Pilot Light Keeps Going Out

Cause: The most common reason for this happening is a faulty thermocouple, although it can also be caused by damaged seals.


What to do: In either case, this matter is best left to a professional.


Noisy Boiler or Noisy Central Heating

Cause: A noisy boiler is often caused by “Kettling”, which is a build up of limescale in the heat exchanger. Banging, gurgling, rumbling or whistling pipes can be caused by a build up of limescale or air in the system.

What to do: By bleeding your radiator or power flushing your pipes, you can remove limescale and air from your system. If the noise continues, you should book a service with a qualified engineer.


Thermostat Doesn’t Work Correctly

Cause: This could be caused by a faulty thermostat. Older thermostats tend to deteriorate over time, and can cause issues for your central heating system.


What to do: Before you call an engineer, check out our troubleshooting tips below.


Boiler is Leaking or Dripping

Cause: There are a number of reasons why this may happen, from loose connections inside the boiler, to broken parts.


What to do: This type of fault can only be fixed by a qualified heating engineer.


Boiler is Losing Pressure

Cause: If you have a pressurized system, you may notice that it keeps losing pressure. This could be caused by a water leak, or a problem with the expansion vessel.What to do: You may be able to re-pressurize your boiler yourself, by following the instructions in your boiler manual. If not, a trained engineer will be able to help you with this. If you would like to know more about our Boiler repairs Halifax or plumbing services in Halifax West Yorkshire contact us today.
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If you need a plumber in Halifax West Yorkshire jmcd are your local go to plumbing and heating experts. We are gas safe registered and one of the highest rated plumbing companys in the Halifax area.

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