This legislation, known as the SMART Energy Efficiency Standards Act, proposes an amendment to the Energy Policy and Conservation Act regarding regional energy efficiency standards. The bill specifically targets standards for furnaces, central air conditioners, and heat pumps, aiming to clarify their application. The core change shifts the compliance requirement for these regional standards from the product's installation date to its manufacturing or import date into the United States. Under the proposed amendment, a product must meet the designated regional standard if it is manufactured or imported on or after the standard's effective date in applicable states, rather than when it is physically installed.