The HERS Rating Index, developed by RESNET:
More new homes are being built with a HERS Rating, particularly in Colorado. The Home Energy Rating System (HERS) is a method used by architects, builders and energy raters, to determine the overall energy use of a home. RESNET, the Residential Energy Services Network, developed the HERS Index standard, which is a nationally recognized standard for measuring the energy efficiency of a home. Many Colorado home builders use the HERS score to rate their homes, and several area municipalities use the HERS score to validate whether a home meets their energy codes, including the City and County of Boulder.
What does a HERS Score say about a home?
The HERS rating measures a home’s energy efficiency and can tell you how efficiently it is operating and where you can make modifications for greater energy savings. When you are selling a home, a low HERS Index Score can command a higher resale price. And when buying a home you can anticipate the costs of energy bills and efficiency upgrades. The video included in this post was published by RESNET to give an overview of the HERS Rating process.
How does the HERS Index work?
To calculate the HERS Score, the rater performs a full energy rating on the home by analyzing information on the home’s energy aspects using a sophisticated software modeling tool. The results of the data analysis are compared against a “reference home” which is the same size and shape as the actual home, and from which a resulting HERS score is created. The lower the score, the better. A lower score means the home is more comfortable and energy-efficient. For example, a home with a HERS Index score of 70 is 30% more efficient than a standard new home, while a home with a score of 130 is 30% less efficient than a standard new home. A HERS Index score of Zero would mean the home consumes net-zero energy and likely has renewable energy installed on the home, such as Photovoltaic (PV) Solar panels. Field testing and verification is performed on all HERS ratings, including verification of insulation levels, window specifications, heating, cooling, water heating specifications, appliance and lighting specifications, in addition to performing blower door air leakage testing.
Certified HERS Raters on staff:
If your new construction or remodel/addition project in Colorado requires a HERS Rating, or you simply want to understand the energy performance of your home, contact Scott Home Inspection. We have Certified HERS Raters on-staff who can help with your project. We have completed hundreds of HERS Ratings on homes throughout Colorado, and have extensive experience in the City and County of Boulder, meeting the Green Points and BuildSmart program requirements.
Also for more information about RESNET and the HERS Rating Index, visit the RESNET website.