Do you've got a leaking boiler?

Should you have a boiler that you may think is leaking, but cannot see any form of leak, what now ??

First we have to establish what type of boiler you have, is it a combination boiler, system boiler or heat only boiler.

With combination and system boilers they work under ruthless, with heat only boilers they are sometimes are pressurised, or work under low pressure.

With all boilers that are pressurised you will have a pressure gauge fitted to either the front of the boiler or near by on the pipe work.

A leaking boiler is not always a leaking boiler, I know that may sound strange, but it's true. All these boilers working under ruthless must have an expansion vessel fitted either internally or externally, that is normally the cause of a leaking boiler.

Just how do we resolve the leaking boiler problem?

First you ought to have your boiler serviced each year without fail, in the event that you decide not to have your boiler serviced then at sometime in the foreseeable future you will have an expensive repair bill as well as the cost of a fresh boiler.

So why is it important to have your boiler serviced?

The times of not bothering to service your boiler have long gone, these boilers were very basic and not much went wrong with them, the most typical problem was that the thermal coupling needed to be changed. These boilers weren't very efficient around 40% of one's fuel bill went of the flue and the other 60% into you're heat.

Since the introduction of the high efficiency condensing boilers it's been very important to possess them serviced each year. These boilers are designed to give the very best performance and most of most save you on your energy bill.

When a boiler service is carried out we are looking first to ensure everything continues to be safe, there are no combustion or gas leaks, checking over the flue making sure the merchandise of combustion are exiting to the outside as they should.

We have a combustion reading with a combustion analyser and be sure the boiler when running is within the boiler makers parameters, if the reading are not correct then we carry out further investigation to learn why, then reset.

Next we arrived at the most common problem with one of these boilers.

Boiler repairs south London , The expansion vessel is really a very important section of your boiler and heat, if this is not working properly then you will have problems. The most frequent problem would be the lack of system pressure, most people describe this as a leaking boiler.

In fact it's not a leaking boiler, it's an expansion vessel problem. The vessel needs to be checked each year and reset for the boiler to provide its best performance, when the vessel it not checked, as time passes it will stop working.

The Boiler Service

When you call in your neighborhood gas safe registered boiler service engineer to service your boiler, ask him to be sure the expansion vessel is checked over and reset if needed. For some reason when a boiler service is completed, the expansion vessel appears to be left out rather than checked, not all of that time period but around 80% of the time. When you browse the boiler makers instructions on boiler service they state that the expansion ought to be checked and reset if needed.

Just what exactly happens to the expansion vessel?


The ultimate way to describe the expansion vessel is, its like a car tyre, as time passes it is going to go flat. The vessel may be the same, it really is pumped up with an automobile pump to a Pressure that is compatible to the type of heat you have.

If the vessel loses its pressure then it'll begin to fill with water internally, once this starts to occur most people start to think they could have a leaking boiler.

The expansion vessel works by taking on the expansion of the water as it gets hotter within you're heating system. If the vessel has no internal pressure then it will fill with water, once full, your boiler will begin to discharge water through the pressure relief valve, to release the pressure to avoid pipes bursting.