Please help me fill in a gap in my understanding -- does a gas forced-air furnace actually work to dramatically reduce humidity? Or is there something else that makes it seem so?
What I observe is that any few days when the heat is on, the house humidity goes down dramatically. Finally I understand that cold outside air contains far less grains of moisture, even when saturated (didn't used to know that). Before I always figured the heater drove out the humidity somehow, but then I asked myself "well where does it go?" -- and couldn't think of an answer.
You could really help me if you could explain the situation. Like most things, I expect it to be absurdly simple when someone clues me in on what's actually happening.
Thanks in advance -- P.Student