"peter" wrote in message
news:sz0Yg.112$AR6.90@trndny02...

"Jim Yanik" wrote in message

Why not construct wood frames with a sheet of clear plastic stretched
over
it,to fit into your window recesses as a "storm window"?

It is a test to see if insulating the windows would lower the heating bill
significantly. If it does, then I may upgrade the windows to better ones.

Welcome to the 54%.

Your test is a complete waste of time and money. Do you think homeowners
upgrade windows or apply window film because their bank accounts were full,
so they had to spend some money? OF COURSE insulating the windows works. It
always works, and it always makes a difference, unless your attic
insulation's not up to par or you have a gaping hole in your roof. And, even
if the difference in heating cost is not big and impressive, it definitely
makes for more comfort.

Test.....unbelievable.