We recently replaced about 2/3 of our windows with reasonable Anderson ones (vinyl covered wood). We're in Chicago, and I try to keep the humidity around 40-45% during the winter for comfort. I generally get very little / no condensation on the new windows, and a touch on the old ones. With temps dipping into the -20s F this week in Chicago, I'm wondering if I should drop the humidity level in the house to not have the windows freezing over. The new windows are definitely picking up a pretty significant amount of condensation, and I'm concerned about damage.
Question: will a day or two of heavier condensation cause any permanent damage?