Need some help gauging the efficiency of my grandma's wall mounted AC unit and whether or not we need to replace it.
It's pretty old, at least early 80's but likely older. Wood grain panel Kenmore Coldspot manufactured for Sears. Model Number on info plate doesn't yield any results online
I can't find the wattage rating on the info plate, but I know it runs at:
8000 BTU/HR
7.5 Amps AHAM
Rated Volts: 115
Operating Volts: Min - 103.5 Max - 126.5
1 Phase - 60 Hz
Apparently, the wattage can be found by multiplying volt to current rating. I'm guessing that means 115(rated volts) x 7.5(amps) = 862.5 watts?
Dividing BTU by the wattage leaves me with 9.28 EER. Apparently an EER of 10 or higher is more desirable?
It does a decent job of cooling, but we're wondering if there's anything better on the market that could cost less energy and reduce the electric bill every month.