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### Example 1

**Calculate the HDD for one day when the average outside temperature is 13º F.**

**Calculate the HDD for one day when the average outside temperature is 2º C.**

### Example 2

**Given the following data, calculate the HDD for the week:**

Day | Average Temperature |
---|---|

Sunday | 49° F |

Monday | 47° F |

Tuesday | 51° F |

Wednesday | 60° F |

Thursday | 65° F |

Friday | 67° F |

Saturday | 58° F |

Please watch the following (2:21) presentation about Heating Degree Days: