On Wed, 13 Jul 2005 17:27:26 GMT, raden wrote:

In message .com,
writes
I am planning to install a Grundfos Alpha+ 15/60 variable speed pump in
a cupboard in my bedroom.

The pump is used to carry hot water (at 2.9 cubic metres per hour max.)
from a low loss heater to the heating circuits in my house and will be
on pretty much all the time.

Can anyone tell me how noisy this pump is? My only experience is with
shower pumps which seem to be very noisy. I'm worried that the Grundfos
pump might keep me awake at night.

What sort of noise?

Is it bearing noise, is it wooshing of air in the pump

Is it playing HeartFM ?

Noise comes in various guises

I cant hear my ALpha running have to touch it to check.
However in a bedroom at night in a quiet locality it is amazing what
you can hear and what can be annoying - so as suggested maount is
sensibly and insulate.

Robert
royall at which net