How low can your HVAC work go?
Quality home performance contracting and HVAC work involve plenty of measurement and verification.
So what’s one more metric?
In this case, the HERS Index is more for the general public’s consumption, as opposed to, say, a static pressure reading. Homeowners, and perhaps especially home shoppers, can use a HERS rating to compare current conditions and get a sense for likely energy costs or possible upgrade priorities.
The HERS Index scale is a little different than most. A score of 100 means a home is dead-on average in its energy efficiency. (“Average” reflects the performance of a RESNET reference home, a “designed-model home of the same size and shape” as the home in question. RESNET is the industry body that oversees the HERS Index in the U.S. Its longer-term goal is a net-zero residential sector by 2040.)
So a home can score over 100, but not in a