posted on Dec, 13 2017 @ 09:45 PM
I lived in a old gold mining town in the high Sierras of Calif while running a gold mine year round for 5 years.
I took 1 1/2 inch foam insulation panels and cut them to fit the windows.
They cut the heating oil bills to 1/3 of what i had been paying.
Now i live in a motor home in the Calif desert and have fitted the windows with 1 inch foam panels and they keep the motor home cooler in the summer
and warmer in the winter.
The only heat/cold leaks i have now is the metal frames of the windows that get hot in the summer and cold in the winter and radiate the heat and
cold into the inside.
I only use 1 40lb propane bottle every two weeks in the winter to keep my 34 foot motor home warm.
edit on 13-12-2017 by ANNED because: (no reason given)