HERS Energy Rating

HERS Index Scale

Understanding the HERS Index

  • HERS stands for Home Energy Rating System
  • RESNET stands for Residential Energy Services NETwork
  • The Lower the HERS Index score the more energy efficient your home is.
  • You can use the HERS Index to compare two homes like MPG in cars
  • A home with a HERS Index Score of 70 is 30% more energy efficient than the RESNET Reference Home, with a base score of 100.*
  • A home with a HERS Index Score of 130 is 30% less energy efficient than the RESNET Reference Home
  • The HERS Index is a standard by which a homes energy efficiency is measured
  • The HERS index is the only nationally recognized system for measuring energy efficiency in homes

Benefits for the homeowner

  • Increased annual energy savings
  • Did you know that the highest cost of homeownership outside of the home loan is energy?
  • Reduction of carbon footprint
  • Comparability of new homes
  • A more comfortable living environment
  • Optional energy guarantee
  • Estimate of energy costs
  • Higher resale value

How Is The HERS Index Assigned?

A certified RESNET Home Energy Rater assesses the energy efficiency of a home, assigning it a relative performance score (the HERS Index Score). The lower the number, the more energy efficient the home. The U.S. Department of Energy has determined that a typical resale home scores 130 on the HERS Index while a home built to the 2004 International Energy Conservation Code is awarded a rating of 100. At Windsor Homes we pay special attention to the areas of your new home which will make it more energy efficient, helping to lower your HERS Index. See the image below, which shows just a few of the areas we focus on.

HERS energy efficiency

 

Want to know More? 

*A home built to the 2004 International Energy Conservation Code is awarded a rating of 100.