In message , Lurch
wrote
On Tue, 14 Dec 2004 23:46:12 +0000, Hugo Nebula abuse@localhost
strung together this:

Which is best - running a central heating pump at its fastest or
slowest speed setting?

Depends, there's a setup process involved. Generally faster for bigger
systems, but run it so it works and it's quiet.


Depending on your system, make sure the faster speeds are not pumping
hot water into the header tank.
--
Alan