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District law requires a manufacturer of a covered product to identify each product offered through retailers for sale or installation in the District of Columbia as in compliance with the District Appliance Efficiency Standards, or with the energy efficiency standards enacted by another state or the federal government if the standards on which the compliance is based are substantially identical to the appropriate standards in the District of Columbia, by means of a mark, label, or tag on the product or packaging at the time of sale or installation.
The law does not mandate a particular form of mark, label, or tag; a product with an ENERGY STAR®, California-compliant, or WaterSense label is sufficient. Alternately, for a product that is not subject to a national standard such as ENERGY STAR, a model number that is searchable in the State Appliance Standards Database (SASD) or a mark denoting the energy or water efficiency rating or that it complies with D.C. Code § 8-1771.03 is sufficient.