Miami, FL
Energy Savings % Indoor Vs. Window R/F
Assuming that the A/C is Off (Outdoor is colder than kitchen)
B = Average Outdoor temperature (temperature of Window R/F's Condenser).   
C = Average Indoor temperature, 70 F or higher (temperature of Indoor R/F's Condenser). 
D = Average temperature of the evaporator (set constant at 29 F). 
Energy Savings % = H = (C-B) / (C-D)
Fahrenheit B C D H
JAN 67 70 29 7%
FEB 69 70 29 2%
MAR 72 72 29 0%
APR 75 75 29 0%
MAY 79 79 29 0%
JUN 81 81 29 0%
JUL 83 83 29 0%
AUG 83 83 29 0%
SEP 82 82 29 0%
OCT 78 78 29 0%
NOV 74 74 29 0%
DEC 69 70 29 2%
Average Energy Savings %  1%
Exact same as above except in Celsius
Celsius B C D H
JAN 19 21 -2 7%
FEB 21 21 -2 2%
MAR 22 22 -2 0%
APR 24 24 -2 0%
MAY 26 26 -2 0%
JUN 27 27 -2 0%
JUL 28 28 -2 0%
AUG 28 28 -2 0%
SEP 28 28 -2 0%
OCT 26 26 -2 0%
NOV 23 23 -2 0%
DEC 21 21 -2 2%
Average Energy Savings %  1%
Windowrefrigerator.com
PATENT PENDING