The Air-Conditioning and Refrigeration Institute (ARI) (Arlington, VA) has published ARI Standard 390-2001 "Single Package Vertical Air-Conditioners and Heat Pumps," a new equipment performance standard, and revised ART Standard 340/360-2000 "Commercial and Industrial Unitary Air Conditioning and Heat Pump Equipment." Both are available for free on ARI's Website, www.ari.org.