In article ,
gremlin_95 writes:
Is it true that the Keston is a fairly noisy boiler? In my primary
school they have a Keston 170 which you could hear all over the school
when it was running, a loud whistling sound. AFAIK it is still in
operation, installed around 2001.

Mine isn't noisy. It's in the bathroom, and you can't hear it
at all if the shower or wall fan heater are on. You can hear
it if there's no other noise when it's modulated above about
30%. At low modulation, you would have to be quite close to
hear it.

However, your 170 is one of their commercial boilers, not
intended for domestic use, and a quite different design.

--
Andrew Gabriel
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