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Heating and Cooling Degree Days (HDD and CDD) can help you relate how much you might spend to heat and cool your home.
A high HDD indicates a cold climate and a high CDD indicates a warm climate.
Of our 99 top places to retire, Newport Beach and San Luis Obispo, California are easiest on the home heating and cooling bills with the lowest Heating and Cooling Degree Day totals.
Home Heating & Cooling Demands | ||||
Annual | Annual | |||
Total Annual | Heating | Cooling | ||
Heating/Cooling | Degree Days | Degree Days | GPTR | |
City/Town | Degree Days | (HDD) | (CDD) | Rank |
Newport Beach, CA | 2,262 | 1,719 | 543 | 1 |
San Luis Obispo, CA | 2,614 | 2,138 | 476 | 2 |
Monterey, CA | 3,166 | 3,092 | 74 | 3 |
Napa, CA | 3,218 | 2,689 | 529 | 4 |
Half Moon Bay, CA | 3,765 | 3,754 | 11 | 5 |
Melbourne, FL | 3,781 | 595 | 3,186 | 6 |
Sarasota, FL | 3,865 | 538 | 3,327 | 7 |
Gainesville, FL | 3,896 | 1,148 | 2,748 | 8 |
Naples, FL | 3,962 | 316 | 3,646 | 9 |
Winter Haven, FL | 4,089 | 538 | 3,551 | 10 |
Valdosta, GA | 4,091 | 1,782 | 2,309 | 11 |
Hilton Head, SC | 4,131 | 2,119 | 2,012 | 12 |
Galveston, TX | 4,276 | 1,008 | 3,268 | 13 |
Gulf Shores, AL | 4,308 | 1,504 | 2,804 | 14 |
Kailua, Oahu, HI | 4,312 | 0 | 4,312 | 15 |
GPTR Rank - Lower "Total Heating/Cooling Degree Days" translates to lower home | ||||
heating and cooling costs. | ||||
Heating Degree Days (HDD) | ||||
Measure of how cold it is relative to 65 degrees. Relates temperature to the demands | ||||
of a/c. Calculated as the number of degrees that a day's average temperature | ||||
(high + low / 2) is below 65. | ||||
Example: On June 20 in Bellingham, the day's high was 72 and low was 50. The | ||||
average temperature was 61 meaning June 20 had 4 heating degree days. | ||||
Cooling Degree Days (CDD) | ||||
Measure of how hot it is relative to 65 degrees. Relates temperature to the demands | ||||
of heating a residence. Calculated as the number of degrees that a day's average | ||||
temperature (high + low / 2) is above 65. | ||||
HDD and CDD can vary widely depending upon your location: | ||||
HDD | CDD | |||
Fairbanks, AK | 13,542 | 45 | Cold climate | |
Hilton Head, SC | 2,119 | 2,012 | Temperate climate | |
Phoenix, AZ | 1,125 | 4,189 | Hot climate |
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