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1. Heating & Cooling Degree Days – Free Worldwide Data Calculation
Link: https://www.degreedays.net/
Description: WEBDegree Days Calculated Accurately for Locations Worldwide. Buildings require more heating in colder weather, and more air-conditioning in hotter weather. Degree Days.net provides the data to quantify this and help monitor, manage, and reduce energy consumption in millions of buildings around the world. It is developed and maintained by …
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2. What Are Heating and Cooling Degree Days - National Weather Service
Link: https://www.weather.gov/key/climate_heat_cool
Description: WEBHeating and Cooling Degree Days. Degree days are based on the assumption that when the outside temperature is 65°F, we don't need heating or cooling to be comfortable. Degree days are the difference between the daily temperature mean, (high temperature plus low temperature divided by two) and 65°F.
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3. Degree-days - U.S. Energy Information Administration (EIA)
Link: https://www.eia.gov/energyexplained/units-and-calculators/degree-days.php
Description: WEBAug 21, 2023 · Heating degree days (HDDs) are a measure of how cold the temperature was on a given day or during a period of days. For example, a day with a mean temperature of 40°F has 25 HDDs. Two such cold days …
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4. Degree Days Calculator | ENERGY STAR
Link: https://www.energystar.gov/buildings/tools-and-resources/degree-days-calculator
Description: WEBLast Updated: 02-23-2021. This online calculator pulls weather station data--including heating and cooling degree days (HDD and CDD)--from more than 900 weather stations around the United States and Canada. Use the weather normalization data here to adjust your building's or industrial plant's energy usage data for changes in weather.
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5. Heating degree day - Wikipedia
Link: https://en.wikipedia.org/wiki/Heating_degree_day
Description: WEBDefinition. Heating degree days are defined relative to a base temperature—the outside temperature above which a building needs no heating. Base temperatures may be defined for a particular building as a function of the temperature that the building is heated to, or it may be defined for a country or region for example.
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6. Degree Days - National Weather Service
Link: https://www.weather.gov/ffc/degdays
Description: WEBA "degree day" is a unit of measure for recording how hot or how cold it has been over a 24-hour period. The number of degree days applied to any particular day of the week is determined by calculating the mean temperature for the day and then comparing the mean temperature to a base value of 65 degrees F.
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7. Heating Degree Day (HDD): Definition and How To Calculate - Investopedia
Link: https://www.investopedia.com/terms/h/heatingdegreeday.asp
Description: WEBMar 31, 2021 · A heating degree day (HDD) is a measurement designed to quantify the demand for energy needed to heat a building. It is the number of degrees that a day's average temperature is below 65 o...
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8. Degree Days Calculator | The Nicholas Institute for Energy, …
Link: https://nicholasinstitute.duke.edu/energy-data-resources/degree-days-calculator
Description: WEBENERGY STAR. A tool to calculate heating and cooling degree days in the United States and Canada based on specific zip codes and dates.
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9. Climate Prediction Center - Monitoring & Data: Weekly & Monthly Degree
Link: https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/cdus/degree_days/ddayexp.shtml
Description: WEBJan 24, 2005 · Heating degree days are summations of negative differences between the mean daily temperature and the 65°F base; cooling degree days are summations of positive differences from the same base. For example, cooling degree days for a station with daily mean temperatures during a seven-day period of 67,65,70,74,78,65 and 68, …
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10. Heating Degree Days and Cooling Degree Days | EnergySage
Link: https://www.energysage.com/electricity/heating-and-cooling-degree-days/
Description: WEBFor heating degree days, the calculation is the opposite: subtract the average temperature of the day from 65°F. For example, if a winter day has an average temperature of 30°F, that day has 35 heating degree days (65°F - 30°F = 35). The greater the heating degree days, the colder the region is.