Home Energy Score
A DOE-developed rating from 1 to 10 that assesses a home energy efficiency based on the building envelope, heating/cooling systems, and hot water system. Similar to a miles-per-gallon rating for vehicles.
Why It Matters
Some cities (Portland, Berkeley) require energy scores for home sales. A higher score can increase property value and reduce buyer concerns about utility costs.
Related Tools
Related Terms
HERS Index (Home Energy Rating System)
A scoring system from 0-150+ that rates a home's energy efficiency. A HERS Index of 100 equals the reference home; lower scores are more efficient. A net-zero home scores 0.
Energy Audit
A professional assessment of a home's energy performance, including blower door testing, thermal imaging, duct leakage testing, insulation evaluation, and appliance efficiency review.