Many people consider a HERS Index Score of 40 or less as a tipping point to net zero energy homes. In 2017, there were 2,099 homes that were HERS Rated and had a HERS Index Score of 40 or less.
The breakdown of the number of homes with a HERS Index Score of 40 or less by housing type is:
The breakdown of the number of homes with a HERS Index Score of 40 or less by state is: