Choose your location: --Select from the list below--- Birmingham, AL Huntsville, AL Mobile, AL Montgomery, AL Anchorage, AK Annette, AK Barrow, AK Bethel, AK Bettles, AK Big delta, AK Cold bay, AK Fairbanks, AK Gulkana, AK King salmon, AK Kodiak, AK Kotzebue, AK Mcgrath, AK Nome, AK St paul is., AK Talkeetna, AK Yakutat, AK Flagstaff, AZ Phoenix, AZ Prescott, AZ Tucson, AZ Fort smith, AR Little rock, AR Arcata, CA Bakersfield, CA Daggett, CA Fresno, CA Long beach, CA Los angeles, CA Sacramento, CA San diego, CA San francisco, CA Santa maria, CA Alamosa, CO Colorado springs, CO Boulder, CO Eagle, CO Grand junction, CO Pueblo, CO Bridgeport, CT Hartford, CT Wilmington, DE Daytona beach, FL Jacksonville, FL Key west, FL Miami, FL Tallahassee, FL Tampa, FL West palm beach, FL Athens, GA Atlanta, GA Augusta, GA Columbus, GA Macon, GA Savannah, GA Hilo, HI Honolulu, HI Kahului, HI Lihue, HI Boise, ID Pocatello, ID Chicago, IL Moline, IL Peoria, IL Rockford, IL Springfield, IL Evansville, IN Fort wayne, IN Indianapolis, IN South bend, IN Des moines, IA Mason city, IA Sioux city, IA Waterloo, IA Dodge city, KS Goodland, KS Topeka, KS Wichita, KS Covington, KY Lexington, KY Louisville, KY Baton rouge, LA Lake charles, LA New orleans, LA Shreveport, LA Caribou, ME Portland, ME Baltimore, MD Boston, MA Worchester, MA Alpena, MI Detroit, MI Flint, MI Grand rapids, MI Houghton, MI Lansing, MI Muskegon, MI Sault ste. marie, MI Traverse city, MI Duluth, MN International falls, MN Minneapolis, MN Rochester, MN Saint cloud, MN Jackson, MS Meridian, MS Columbia, MO Kansas city, MO Springfield, MO St. louis, MO Billings, MT Cut bank, MT Glasgow, MT Great falls, MT Helena, MT Kalispell, MT Lewistown, MT Miles city, MT Missoula, MT Grand island, NE Norfolk, NE North platte, NE Omaha, NE Scottsbluff, NE Elko, NV Ely, NV Las vegas, NV Reno, NV Tonopah, NV Winnemucca, NV Concord, NH Atlantic city, NJ Newark, NJ Albuquerque, NM Tucumcari, NM Albany, NY Binghamton, NY Buffalo, NY Massena, NY New york city, NY Rochester, NY Syracuse, NY Asheville, NC Cape hatteras, NC Charlotte, NC Greensboro, NC Raleigh, NC Wilmington, NC Bismarck, ND Fargo, ND Minot, ND Akron, OH Cleveland, OH Columbus, OH Dayton, OH Mansfield, OH Toledo, OH Youngstown, OH Oklahoma city, OK Tulsa, OK Astoria, OR Burns, OR Eugene, OR Medford, OR North bend, OR Pendleton, OR Portland, OR Redmond, OR Salem, OR Guam, PI Allentown, PA Bradford, PA Erie, PA Harrisburg, PA Philadelphia, PA Pittsburgh, PA Wilkes-barre, PA Williamsport, PA San juan, PR Providence, RI Charleston, SC Columbia, SC Greenville, SC Huron, SD Pierre, SD Rapid city, SD Sioux falls, SD Bristol, TN Chattanooga, TN Knoxville, TN Memphis, TN Nashville, TN Abliene, TX Amarillo, TX Austin, TX Brownsville, TX Corpus christi, TX El paso, TX Fort worth, TX Houston, TX Lubbock, TX Lufkin, TX Midland, TX Port arthur, TX San angelo, TX San antonio, TX Victoria, TX Waco, TX Wichita falls, TX Cedar city, UT Salt lake city, UT Burlington, VT Lynchburg, VA Norfolk, VA Richmond, VA Roanoke, VA Sterling, VA Olympia, WA Quillayute, WA Seattle, WA Spokane, WA Yakima, WA Charleston, WV Elkins, WV Huntington, WV Eau claire, WI Green bay, WI La crosse, WI Madison, WI Milwaukee, WI Casper, WY Cheyenne, WY Lander, WY Rock springs, WY Sheridan, WY Average Daily Solar Radiation [BTU/Ft^2] January February March April May June July August September October November December                         Average Daily Temperature [F] January February March April May June July August September October November December                         Choose Your Usage (Gallons Per Day): --Select from the list below-- 60 80 100 120 140 160 As a rule of thumb it is safe to assume 20 gallons / person / day Estimated Load Per Day [BTU] January February March April May June July August September October November December                         Oventrop 80 Gallon Evacuated Tube Solar Collector System Estimated Annual Solar Contribution:   Item number: 540 00 16K Oventrop 119 Gallon Evacuated Tube Solar Collector System Estimated Annual Solar Contribution:   Item number: 540 00 17K Oventrop Recession Buster Solar Collector System Estimated Annual Solar Contribution:   Item number: 540 03 07RB Oventrop 80 Gallon Flat Plate Solar Collector System Estimated Annual Solar Contribution:   Item number: 540 04 08K Oventrop 119 Gallon Flat Plate Solar Collector System Estimated Annual Solar Contribution:   Item number: 540 34 08K