Friday, May 6, 2011

The HERS Index Made Easy

No, a HERS Index number is not a reflection of how much of a home’s closet space is occupied by women’s clothes. Nor is it a gauge of femininity.

“HERS” is short for Home Energy Rating System. As explained in Wikipedia, a HERS Index number is a relative energy use index making possible energy consumption comparisons among homes built during different years, with different building components and methods and governed by different, ever-evolving building codes. Just as EPA Estimated Mileage Ratings for all types of vehicles facilitate fuel efficiency comparisons, HERS Index numbers enable the relative energy efficiency of different homes to be compared.