ACEC Indiana AIA (The American Institute of Architects) AllHVACInfo.com: Your Road Map to the HVAC Industry APPA ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) ASHRAE Central Indiana Chapter ASPE (American Society of Plumbing Engineers) BICSI IEEE ICC (International Code Council) Indiana Chamber of Commerce Indianapolis Chamber of Commerce ISHE (Indiana Society of Healthcare Engineering) NFPA (National Fire Protection Association) NSPE (National Society of Professional Engineers) U.S. Green Building Council