The HERS (Home Energy Rating System) Index is a nationally recognized scoring system that evaluates the energy efficiency of a home. Similar to a miles-per-gallon (MPG) rating for cars, the HERS Index measures how efficiently a home uses energy.
How is a home’s HERS Index Measured?
The HERS Index is measured by a certified Home Energy Rater who performs an energy audit and scores homes with a relative performance score from 1 to 150+. A lower score indicates higher energy efficiency.
0: A Net Zero Energy Home (generates as much energy as it uses on-site)
100: Represents the energy efficiency of a standard new home built to the 2006 International Energy Conservation Code (IECC)
Older, less efficient homes often score above 130
What is Included in a HERS Energy Rating?
To evaluate a home’s HERS Index, the following items are evaluated:
All exterior walls (both above and below grade)
Floors over unconditioned spaces (like garages or cellars)
Ceilings and roofs
Attics, foundations and crawlspaces
Windows and doors, vents and ductwork
HVAC systems, water heating system and thermostat
What are the benefits of owning a HERS rated home?
Reduced ownership costs and lower energy bills: According to the Department of Energy, an energy-efficient home can help you save anywhere from 5 - 30% on energy bills annually.
Healthier indoor air: Fresh air ventilation and advanced filtration systems help you breathe easier.
Comfortable living environment: Energy-efficient homes reduce drafts and maintain consistent indoor temperatures making them more comfortable year-around.
Higher resale values: Energy-efficient HERS rated homes often sell more quickly and for higher prices compared to standard homes.
Better for the Environment: HERS rated homes help protect the environment by reducing pollution and carbon emissions.
Third-Party Verification: A home’s HERS score is determined by a certified energy rater, ensuring credibility and reliability
How does a builder know the HVAC contractor has completed a correct installation
First America Homes offers standard 310 testing by Arcxis-certified HERS raters. Standard 310 provides a comprehensive framework for assessing and grading HVAC system installations and promoting energy efficiency.
Task 1: Verify that the HVAC system’s design aligns with the dwelling’s attributes and envelope specifications.
Task 2: Confirm the duct system is properly sealed to prevent conditioned air from leaking into unconditioned spaces. This ensures the maximum amount of air is being delivered to the correct areas.
Task 3: Ensure the correct amount of airflow across the coil to provide the most efficient water removal (latent) and material heat (sensible).
Task 4: Optimize the energy consumption of the blower fan relative to the airflow it delivers.
Task 5: Conduct a non-invasive assessment of the refrigerant charge to ensure optimal system performance.
Find your energy-efficient home today!
Discover the savings and comfort of a high-performing home. With low HERS scores, our homes are designed to save you money and reduce emissions. Find your new home today.
