"Bill Gill" wrote in message
news:Azu1f.2616$xE1.2216@okepread07...

As far as freezing up is concerned, in colder climates
the drain line should be connected into your sanitary
sewer. If it runs outside the drips may freeze up and
back up water into the furnace. In mine there is a
float switch that detects a backup and turns everything
off.

I've fixed 2 furnaces for friends that both stopped working when the
condensate pump quit working and the furnace turned itself off. Fix the
pump - problem solved.

Bob