Text Box: SEER:(Seasonal Energy Efficiency Ratio) is based on 75° inside temperature, and 82° outside temperature; with a fixed humidity level; (65%) in a radiation free environment using Dry Bulb, Wet Bulb. SEER =(BTU ÷ Watts per hr) @ 75°/82° EER:(Energy Efficiency Ratio) is based on 75° inside temperature, and 95° outside temperature; with a fixed humidity level; (65%) in a radiation free environment using Dry Bulb, Wet Bulb. EER = (BTU ÷ Watts per hr) @ 75°/95° The Sacramento Valley is in Climate Zone "12", which is a hot zone; In zone "12" the EER rating is more important; the average summer temperature is 95° and over. EER is the same calculation as SEER at 95°; when the Air Conditioning is operating at full capacity.

SEER & EER BY THE YEAR INSTALLED:

The Following Efficiency Ratings Are The Averages

For The years Installed