The Energy Policy and Conservation Act of 1975 (EPCA), as amended, directs DOE to establish energy conservation standards for certain commercial and industrial equipment, including commercial heating, air-conditioning, and water-heating equipment. The statute also requires that each time the corresponding consensus standard of the American Society of Heating Refrigerating and Air-Conditioning Engineers Inc. (ASHRAE), Illuminating Engineering Society (IES) Standard 90.1 is amended by the industry, DOE must assess whether there is a need to update the uniform national energy conservation standards for the same equipment covered under EPCA. ASHRAE officially released an amended version of this industry standard (ASHRAE Standard 90.1-2013) on October 9, 2013, thereby triggering DOE's related obligations under EPCA. DOE has initiated this rulemaking to evaluate the contents of ASHRAE 90.1-2013 pursuant to its obligations under EPCA.