I hope everyone is told to sweep the snow off those top vents.
I have had to teach at least five people (4 women, 1 male) that they were not going to get their defrosters to work properly unless they swept off the intakes at the bottom of their windshield.
They honestly had no concept of air flow.
This might be why people take take showers these days instead of baths. So few know that when you pull the plug it will drain the tub.
