Wet windows every morning?
Now that the weather is turning colder, many people wake up to the same sight: windows covered in drops, little streams running down to the windowsill, and a wet window frame. Condensation season runs from about October to March. There is a cheap trick many grandmothers swear by.
First, why condensation happens. Air always holds some water as invisible vapor, and warm air can hold more of it than cold air. When the warm, moist air in your home touches a cold window pane, it cools down and can't hold all that water anymore. The water turns into drops on the glass, just like on the outside of a cold glass of iced tea on a warm day. That is why it is worst early in the morning: the glass has been cold for hours, and the air inside is full of moisture.
And we add much more moisture than we think. Breathing while you sleep, a hot shower, a pot of pasta boiling without a lid, and a rack of laundry drying in the living room all put water into the air. In a busy household, that easily adds up to several quarts of water every day, and a lot of it ends up on the coldest surface in the room: your windows. On the next page you'll see what really helps!