On April 14, 2005, the Office of Hearings and Appeals (OHA) of the Department of Energy (DOE) granted exception relief to Nordyne, Inc. See Nordyne, Inc., 29 DOE ¶ 81,004 (2005) (Nordyne). The exception concerned split system central air conditioners and heat pumps having three to five ton cooling
capacities and sold for use in manufactured housing. Under the terms of relief, Nordyne would have a four-year extension of time to comply with the 2006 energy efficiency standards, subject to its compliance with a lower standard during the interim period. In response to Nordyne, York International Corp. (York) requested that it be granted similar exception relief or, in the alternative, that Nordyne be reversed. In addition, Carrier Corporation (Carrier) and Lennox International, Inc. (Lennox) requested that Nordyne be reversed. As explained below, we have determined that Nordyne should be reversed.