We live in the PNW which in the summer has warm days but cool nights. Indeed many places do not have AC. But I have terrible allergies so just opening up the windows at night to cool the house off makes me miserable.
So last year he created this filtered air box as part of a kit and rigged it into the living room window so we can being filtered air in when it's cooler outside.
But this year he got cleverer.
1/x
