Heating: How to solve the most common boiler problems – ‘usually a leak’

British Gas instructs consumers on how to solve boiler issues

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With energy bills due to rise by a staggering 54 percent this April it’s essential to keep boilers running efficiently. This is crucial in order to save energy whilst helping to keep bills as low as possible. With this in mind, experts at HeatingForce decided to investigate what are the most searched for questions to do with boiler problems and have shared how to combat them.

Boiler issues can cause chaos, particularly during the winter months. 

With Ofgem confirming their new energy price cap, 22 million homeowners will see their energy bills rise significantly.

This will mean that for those on a standard tariff, the typical bill will rise by £693.

Running an inefficient boiler could be adding to your financial problems, so here are a few solutions to the most common asked boiler questions.

Boiler pressure levels

The most commonly asked boiler question was revealed as ‘Why does my boiler keep losing pressure?’.

Heating expert Alex Ion from HeatingForce explained that it is usually caused by “a leak”.

He said: “This is not necessarily a leak in the boiler itself, it could be a leak anywhere in the central heating system. 

“To prevent the boiler from losing pressure, you need to find the leak and fix it.”

Once this is done homeowners can top up the boiler via the filling loop, and it should operate without further problems.

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Loud noises

The second most searched boiler issue question was ‘why is my boiler making a loud vibrating noise?’.

If boilers are making loud noises, it is probably trying to indicate that it is not working properly.

Alex said: “The most likely reason for this is that one of the motorised components has seized, such as the pump. 

“To make sure, check whether the pump is hot. 

“If it’s uncomfortably hot to touch while the boiler makes a loud vibrating noise then you can safely assume that it is the pump.”

Alex explained that the best course of action is to contact a Gas Safe engineer to inspect the boiler as it is likely that they will have to do a thorough clean and also potentially flush out the entire central heating system. 

Alternatively if the issue is down to the age of the boiler, it may need replacing.

Leaking boiler

Another problem many homeowners seem to encounter is their boiler leaking water.

Alex said: “One of the explanations for this is that the pressure in the boiler is too high and the pressure release valve is releasing water from the system to lower the boiler pressure. 

“Conversely, many ask ‘why is my boiler gaining pressure?’ and this can be caused by too much pressure in the system, filler loop letting in water, or faulty pressure release components.”

Keeps firing up

If a boiler keeps firing up then shutting down, there’s probably an issue with the gas supply. 

Alex said: “The main reasons for this include gas valve faults in which not enough gas is allowed into the boiler, as well as gas meter problems. 

“Whereby the regulator freezes in cold weather so the meter does not allow a sufficient amount of gas to keep the boiler going.”

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