RE: Hot water circulation

["Randall" <tr3driver@ca.rr.com>]

> Make your system a modification of what hotels, hospitals, etc. use
> They have a pump that circulates hot water in a closed loop past every
> room.

The problem with that approach is that it requires the entire hot water line to
be very well insulated, or it results in a huge heat (energy) loss.  In my case,
it's a bit difficult to insulate the pipes in the slab.

Randall