Posted by frank Maple (148.63.162.154) on October 18, 2009 at 14:11:32:
In Reply to: home energy efficiency analysi posted by Harry Sands on October 17, 2009 at 20:30:29:
I think the basis is 70 degrees, but don't recall for sure. However, what that refers to is how the mean temperature of a day compares to the standard. If the temp averages 33 degrees for the day, then that would be 37 heating degree-days. If it averaged 90, then that would be 20 cooling degree-days.