#433: Heat and A/C on the Same Day

Unless living in an extreme location like Death Valley or the Sahara Desert, there should never be a need for someone in a house or apartment to use the heat and air conditioning in the same day.  If it cools down at night and early morning, you should know it will warm up quickly later in the day, so just deal with the few degrees of being below you optimal temperature rather than waste energy heating up the house, only to have it too hot later.  Same goes in the other direction when one could use natural cooling at night to cool down the house rather than use the A/C for maybe a brief period where the temperature is slightly above the optimal temp.  Severity: 4