The Residential Energy Services Network (RESNET) was founded in 1995 to develop a national market for residential energy efficiency. RESNET has grown to be the leading organization for this industry, earning acceptance from the federal government and several of its agencies.
RESNET uses the Home Energy Rating System (HERS) to rate a home's energy efficiency. The HERS Index illustrates a range that can be used to compare the energy use of two homes.
Computer software, such as REM/Rate, is used to analyze the results of an in-depth assessment of an existing home or the components of a new home design. The assessment includes analysis and inspection of:
Specialized diagnostic equipment, such as a blower door and duct blaster, help to provide detailed measurements of the energy efficiency issues. In addition to yielding an energy rating, the report will provide a cost benefit/analysis, with expected return on investment for suggested repairs and upgrades. This makes it easier for the homeowner to prioritize recommended treatments.
RESNET has grown in popularity as a result of its far-reaching impacts. Here are several examples of groups that use the HERS score:
The HERS Index is also one of the metrics used to qualify a home for an EPA ENERGY STAR certification label.