Test procedures

At least once every 7 years, the Secretary shall conduct an evaluation of each class of covered equipment and— In the case of commercial refrigerators, freezers, and refrigerator-freezers, the test procedures shall be— If a test procedure other than the ASHRAE 117 test procedure is approved by the American National Standards Institute, the Secretary shall, by rule— If a new test procedure is adopted under clause (i)— For the purpose of test procedures for walk-in coolers and walk-in freezers: Before prescribing any final test procedures under this section, the Secretary shall— Effective 180 days (or, in the case of small commercial package air conditioning and heating equipment, large commercial package air conditioning and heating equipment, very large commercial package air conditioning and heating equipment, commercial refrigerators, freezers, and refrigerator-freezers, automatic commercial ice makers, commercial clothes washers, packaged terminal air conditioners, packaged terminal heat pumps, warm-air furnaces, packaged boilers, storage water heaters, instantaneous water heaters, and unfired hot water storage tanks, 360 days) after a test procedure rule applicable to any covered equipment is prescribed under this section, no manufacturer, distributor, retailer, or private labeler may make any representation— The Secretary may direct the National Institute of Standards and Technology to provide such assistance as the Secretary deems necessary to carry out his responsibilities under this part, including the development of test procedures.