Certified models meet all ENERGY STAR requirements as listed in the Version 2.0 ENERGY STAR Program Requirements which is effective January 2, 2019, or Version 3.0 ENERGY STAR Program Requirements, which will come into effect on July 19, 2021. A detailed listing of key efficiency criteria are available at
https://www.energystar.gov/products/other/pool_pumps/key_product_criteria