If you have a boiler that you may think is leaking but cannot see any form of leak what do you do?First we need to establish what type of boiler you have, is it a combination boiler, system boiler or heat only boiler.
with heat only boilers they are sometimes are pressurised, or work under low pressure.With all boilers that are pressurised there will be a pressure gauge fitted to either the front of the boiler or close by on the pipe work.
All these boilers working under high pressure should have an expansion vessel fitted either internally or externally, this is normally the cause of a leaking boiler.
First you should have your boiler serviced each and every year without fail,
if you decide not to have your boiler serviced, at sometime in the future you will have an expensive repair bill or even the cost of a new boiler.
The days of not bothering to service your boiler have long gone,
these boilers were very basic and not much went wrong with them,
the most common problem was that the thermal coupling had to be changed.
Since the introduction of the high efficiency condensing boilers it’s been very important to have them serviced each year.
When a boiler service is carried out we are looking first to make sure everything is still safe,
checking over the flue making sure the product of combustion are exiting to the outside as they should.We take a combustion reading with a combustion analyser and check that the boiler when running is within the boiler makers parameters, if the reading are not correct,
then we carry out further investigation to find out why, then reset.
The expansion vessel is a very important part of your boiler and heating system, if this is not working properly then you will have problems.
The most common problem will be the loss of system pressure, most people describe this as a leaking boiler.
When you call in your local gas safe registered boiler service engineer to service your boiler,
ask him to make sure the expansion vessel is checked over and reset if needed.
the expansion vessel seems to be left out and not checked, not all of the time but around 80% of the time.
When you read the boiler makers instructions on boiler service they state that the expansion should be checked and reset if needed.
The best way to describe the expansion vessel is, its like a car tyre,
over time it will eventually go flat.
it is pumped up with a car pump to a Pressure that is compatible to the type of heating system you have.
If the vessel looses it pressure then it will start to fill with water internally,
The expansion vessel works by taking up the expansion of the water as it heats up within you’re heating system.
If the vessel has no internal pressure then it will fill up with water,
Like to know more about how Duval Heating can help you with your boiler and heating problems, even book an appointment for one of our engineers to call on you. Use our Contact page
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Duval Heating 1985 - 2019