Keston boilers are unique in that it is one of the only boilers that I
know of that can be installed virtually anywhere within the property.
The Keston boilers flue can be run up to 30 meters depending on what model you use.
The flue itself is 50mm MuPVC, which is simple to install and is put together by glue or another name, solvent weld.
No other boiler manufacturer that I know of comes
close to the Keston fluing system.
and I must say they have got a lot better than they use to be.
Whenever I was called out to service a Keston boiler,
the first question I asked the customer was how old is your boiler and any problems.
If they answered it’s about 4 years old or more then
Keston boilers only seem to last for around 4-5 years in the past.
One of the biggest problems I came across was the internal water pressure switch,
it always seemed to have a minor leak, and if you touched it, it just fell apart.
The strange thing with Keston boilers was if you called them on the support line and explained the faults you found,
they always said no, not our boilers, we have not had any other reports, it must be just a one-off.
was the heat exchanger started to leak on both the left and right-hand seals?
This seemed to happen after about 2 years, or just as the warranty ended.
To replace the seals you have to drain the boiler down and remove the heat exchanger.
I learnt the hard way; I changed the left hand one, only to return a few weeks later to change the right hand one.
One other fault I came across with Keston boilers was that on some models, not all of them,
the boiler casing at the back of the heat exchanger had a hole in, this was caused by the main burner,
burning through the heat exchanger and burning the case.
It seems now that Keston boilers are using better quality parts when building their boilers.
Which is good, because when you speak to other installers they all have stories about Keston boilers.
The good thing about Keston boilers is the fluing, and till another boiler, manufacture come up with a similar design,
keston boilers will be the market leaders because of the flue design.
As with any gas boiler or gas appliance always make sure you
only use Gas Safe Registered engineers or company, it’s your life at risk.
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