HERS Index

There are a number of competing standards in the marketplace that seek to define energy efficiency. Echo Spur prefers to use the HERS Index for homes: the Home Energy Rating System. The HERS Index is a scoring system established by the Residential Energy Services Network (RESNET) in which a home built to the specifications of the 2004 International Energy Conservation Code scores a HERS Index of 100, while a home utilizing no non-renewable external energy sources scores a HERS Index of 0. The lower a home’s score, the more energy efficient it is in comparison to the HERS Reference Home.

Each one-point decrease in the HERS Index corresponds to a one percent reduction in energy consumption compared to the HERS Reference Home. Thus a home with a HERS Index of 145 (such as an un-insulated, historic miner’s cabin) is 45 percent less energy efficient than the HERS Reference Home. A home with a HERS Index of 20 (our target for Echo Spur) is 80 percent more energy efficient.

The HERS Index provides an independent, objective and quantifiable measure of how much energy your home uses. Working with our energy engineer, architect and construction team, Echo Spur can precisely calculate how much it costs to achieve these energy savings. Our energy strategy is the same as the LEED and Passive House strategies, allowing a prospective homeowner to seek either (or both) of these designations.