New windows+ a new house. I cover the frame in plastic as an added barrier of insulation. If humidity is frozen on the windows then why add more by boiling water. It won't remain in the air so what is the point if it is stuck on the windows. I keep it at 64F & force everyone to wear 6 layers inside. Frugal. Worked outdoors for 30 years. No whining here allowed.

@Countrywoman I like my humidity level in the house above 50%. My wood floors like it too... Plus the house heats more easily with humidity in the air. I generally don't have the condensation on my windows and I know it is time to back off when I start seeing the condensation. So that is what I use as a throttle, so to speak.

I have spray foam insulation in all my walls and double blown in insulation in the attic. The one thing I did not get (yet) is a humidifier for my two furnaces. A big pot of water will achieve similar results.

Be careful on trapping the moisture between your windows and the plastic. If your windows are wood... It will eventually rot them!

@RiverRick Lots of humidity in the house. But when it hits that zero or below all of that humidity is on the window edges & not in the air. The positive is if it is heat loss then I have air exchange. The down side its $ lost of course. Yin & yang.

I just learned what those doors were for on the 2nd floor of some houses. The snow would be so high that the folks had to go out the 2nd floor. Who knew. Always learning.

@Countrywoman We were snowed in at the farm. Had to cross country ski to go get a sack of weed.

@Lop-Eared-Mule Always worth the trip.