What to Know About the HERS Index
- The HERS Index accounts for a home’s energy consumption of cooling, heating, electricity, water heating, lights, and some appliances from a 0 to 250 point scale.
- “250”is a very poor rating and likely to have more costly energy bills due to several home inefficiency problems.
- “100” is the standard the same energy as a new home that meets California’s 2008 Building Energy Efficiency Standards.
- “0” is a super-efficient “Net Zero Energy Home” that consumes no more energy than it produces from onsite renewable sources.
- The U.S. Department of Energy has determined that a typical resale home scores 130 on the HERS Index while a standard new home is awarded a rating of 100.
- Every 1 point change on the HERS Index scale equates to a 1% change in energy efficiency.
- The HERS Index helps estimate a home’s annual energy use, operating cost, and greenhouse gas emissions.
- HERS calculates the amount of solar or other onsite renewable energy that the home may produce.
With a HERS Index rating of -13, Blue Zero homes are 8 TIMES MORE ENERGY EFFICIENT than newly built standards of today
The HERS Index calculates a home’s energy efficiency. The lower the score, the more energy efficient the home is.