Thanks for the input. I can see where setting the fan to 'on' in humid
climates can increase humidity. My experience is limited to my
particular
climate. I wonder if Lennox was only talking about properly sized
cooling
systems when they say "as much as 15%".


I have hydronic baseboard heat with straight air in the attic. With the

blower on, my heat is more even, because it pushes the heat back down
to the
floor.





Bob, Yhe 15% was what I measured with my data logger using my system.
My unit is properly sized. Lennox does not give a percentage in their
manual.

Stretch