Links Air Conditioning & Refrigeration: www.ari.org American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE): www.ashrae.org American Society of Mechanical Engineers (ASME): www.asme.org Association of Home Appliance Manufacturers (AHAM): www.aham.org CSA International www.csa-international.org Environmental Protection Agency: www.epa.org National Fire Protection Association (NFPA): www.nfpa.org National Institute for Occupational Safety & Health (NIOSH): www.cdc.gov/niosh/homepage.html Occupational Safety & Health Administration, US Dept of Labor: www.osha.gov Underwriters Laboratory www.ul.com Society of Manufacturing Engineers (SME): www.sme.org U.S. Environmental Protection Agency: www.epa.gov