"Shaun Eli" wrote in message
oups.com...
Allow what to freeze? The block can't freeze-- and I don't expect that
the heating pipe would ever freeze-- if it's cold enough outside for
the garage to be below freezing, then the heat would be on in the house
(even if I turned the heat down to 50 degrees it would have to run
occasionally).


Sure, just ask any plumber in a cold climate. If you know so much, why did
you bother asking?