What is a HERS® Rater? An individual who is certified by an accredited Rating Provider to inspect and test a home to evaluate each of the minimum rated features and complete a HERS rating according to the RESNET Standards. HERS Raters are Certified to Complete HERS Carbon Index® Ratings HERS Raters use accredited HERS software to calculate the HERS Carbon Index Score in the same fashion as a HERS Index Score. The HERS Carbon Index is the first-of-its-kind operational carbon rating, addressing the critical issue of greenhouse gas emissions. How Are HERS Raters Certified? The knowledge base and skill sets for HERS Raters are defined by chapter two of the RESNET® standards, and the training providers are all accredited by RESNET, including: Curricula approval Instructors who are certified by RESNET (must pass the examination) All HERS Rater candidates must pass a national online exam and perform 5 ratings under the supervision of an accredited Rating Provider’s Certified Field Assessor. Only then can the HERS Rater candidate be certified by a RESNET-accredited Rating Provider. What is a HERS Rating? A HERS Rating involves an analysis of a home’s construction plans and onsite inspections. Based on the home’s plans, the HERS Rater uses an energy efficiency software package to perform an energy analysis of the home’s design. This analysis yields a projected, pre-construction HERS Index. Upon completion of the plan review, the rater will work with the builder to identify the energy efficiency improvements needed to ensure the house will meet ENERGY STAR performance guidelines. The rater then conducts onsite inspections, typically including a blower door test (to test the leakiness of the house) and a duct test (to test the leakiness of the ducts). Results of these tests, along with inputs derived from the plan review, are used to generate the HERS Index score for the home. What is the HERS® Index? A scoring system established by RESNET in which a home built to the specifications of the HERS® Reference Home (based on the 2006 International Energy Conservation Code) scores a HERS® Index of 100, while a net zero energy home scores a HERS® Index of 0. Learn More
