A HERS (Home Energy Rating System) Rating is the industry standard for measuring a home’s energy efficiency. Developed by RESNET, the HERS Index provides a clear, numerical score that shows how energy-efficient a home is compared to a standard new home.
A HERS Rating evaluates a home’s energy performance through a combination of plan reviews, on-site inspections, and diagnostic testing. The result is a HERS Index Score, where:
100 represents a standard new home built to code
0 represents a net-zero energy home
Lower scores indicate better energy efficiency
HERS Ratings are commonly required for new construction, energy-efficient mortgages, incentive programs, and energy code compliance.
A certified HERS Rater performs detailed testing and verification, including:
