Dave Rathnow wrote:

I'm located in Calgary, Alberta, where winter temps can get
down to -30C. Average temps, though, are usually about -15C
but we have these things called Chinooks that will causes
temps to go from -20C to +5C in a couple of hours.

Where can I find more information on the solor heating panels
you are using?

Oops! I got this in the mail, too; and have already answered.
Check your mailbox...

--
Morris Dovey
DeSoto, Iowa USA