(Cooling Hours based on 75°F indoor temperature with air conditioner sized to meet the design conditions.)
ASHRAE
Heating
Degree
Location
Days
ALABAMA
Birmingham
2,551
Huntsville
,070
Mobile
1,560
Montgomery
2,291
ARIZONA
Flagstaff
7,152
Phoenix
1,765
Tucson
1,800
Yuma
974
ARKANSAS
Fort Smith
,292
Little Rock
,219
CALIFORNIA
Bakersfield
2,122
Fresno
2,611
Los Angeles
2,061
Sacramento
2,502
San Diego
1,458
San Francisco
,015
COLORADO
Colorado Springs
6,42
Denver
6,28
Grand Junction
5,641
CONNECTICUT
Hartford
6,25
DISTRICT of COLUMBIA
Washington
4,224
DELAWARE
Wilmington
4,90
FLORIDA
Jacksonville
1,29
Miami
214
Orlando
766
Tallahassee
1,485
Tampa
68
GEORGIA
Atlanta
2,961
Augusta
2,97
Macon
2,16
Savannah
1,819
IDAHO
Boise
5,809
Lewiston
5,542
Pocatello
7,0
ILLINOIS
Chicago
6,155
Moline
6,408
Springfield
5,429
INDIANA
Evansville
4,45
Fort Wayne
6,205
Indianapolis
5,699
South Bend
6,49
IOWA
Burlington
6,114
Des Moines
6,588
Sioux City
6,951
KANSAS
Dodge City
4,986
Goodland
6,141
Topeka
5,182
Wichita
4,620
Formula for Calculating Operating Costs Using Above Data:
Heat Loss KW x Heating Degree Days x "C" x Cost Per KWH
Heating* —
Outdoor Design Temperature Difference
* The above formula is for electric resistance heating only. Power consumption using the Zoneline Heat Pumps should be adjusted by Seasonal Performance Factor (SPF).
The local power supplier should be consulted for recommended value of "C." This factor will vary between 17 and 24.