@MayaD
For the nonbusiness energy property credit and the residential energy efficient property credit, the only items that require Energy Star ratings are a geothermal heat pump, a roof designed to reduce heat gain, and doors, windows and skylights. Other energy efficient improvements must meet different standards depending on the type of improvement. See the instructions to form 5695.
https://www.irs.gov/instructions/i5695#idm140333588564912
