I would like to insulate around my window air condition for winter.
I have already taken off the inside cover and covered the face of the
AC unit itself with 2 layers of 3mil black plastic (from contractor
bag). I also have inserted foam weatherstripping to seal between the
upper and lower window sashes.
However the louvers on the sides that fill the gaps between the AC
unit and the window jamb seem to be a much bigger source of air
What is the best way to seal those in a cost-effective, simple, and
I could use caulking chord to seal the actual air gaps, but that still
would leave the uninsulated louvers as a sourec of heat transfer.
Any product or homebrew suggestions?