My Keston boiler seems nothing but trouble. In the two years since I
have had it installed, it has failed in the following ways

The main PCB failed (just stopped working)

The Keston system kit (expansion tank) failed- the membrane went

and now the cabinet overheats

Surprisingly the keston does not have a reset switch. Instead you have
to replace the 'thermal fuse' which is set at £4.50

This is just to get the boiler to re-ignite. Then I surpose you have
to test it and see why the boiler overheated. Proably blowing one or
more of these thermal fuses. My local supplier tells me they do not
stock these items. Keston naturally do not supply direct, and I am
left with having to wait a week for this non stock item to appear (at
a charge of £18.50! (£14 small order carrage!) )

Therefore I am forced to call on Keston themselves to fix the problem.
It is going to be a very expensive repair (their MINIMUM is £150) as
at least their engineer will have the parts to hand, and will not be
on an endless cycle of get part, fit it , blow it discover real
underlying fault, get part fit it etc etc. I cannot wait weeks in this
weather.

So in conclusion. I cannot recomment kestion celcius 25s. Too flaky
Richard