HERS score information for green home buyer

How Does an Energy Rating Work?

Your home’s energy rating is the single biggest indicator of its efficiency, but most homeowners don’t know how it’s calculated or what drives it higher or lower.

Arriving at an energy rating

A home’s energy rating is compiled from a series of measurements taken with diagnostic testing equipment that looks for air leaks and thermal efficiency (among other factors). Spaces around doors and in ductwork are tested with blowers, while infrared cameras look at insulation in walls and ceilings.

The home is tested from top to bottom, and the measurements are put into a computerized simulation to achieve a HERS (Home Energy Rating System) score, the industry standard index to rate a home’s efficiency relative to its size, shape, and type.

The HERS scale

The lower a home’s HERS score, the more efficient it is; low-scoring HERS home owners enjoy reduced energy bills, a lower overall cost of homeownership, and higher potential resale values.

According to the U.S. Department of Energy, a typical resale home rates about 130 on the HERS index, while a new home averages 100. What do those numbers mean? A new home with a HERS score of 70 is 30% more efficient than the standard, while a HERS score of 130 is 30% less efficient.

Our focus is energy efficiency

Authentic Custom Homes is a certified green home builder through the National Association of Home Builders; that’s a designation our team takes seriously, from the moment we suggest a home’s lot placement to the point at which we’re helping a client select systems and appliances for their finished home.

We focus on selecting materials and technologies that are both energy efficient and environmentally stable; on average, our custom homes score 65 on the HERS scale.

By placing windows to minimize summer heating or designing a rainwater catchment system for landscaping, we actively work to ensure that your home is as beautiful, comfortable, and energy efficient as possible.

Authentic Custom Homes builds unique, high-performance homes for our clients. Visit our portfolio to see examples of our designs.