Industry Information & Resources
GREAT SOURCES FOR AIR FILTRATION INFORMATION
National Air Filtration Association -- NAFA
Heating, Air Conditioning & Refrigeration Distributors International - HARDI
American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. -- ASHRAE
Air Conditioning & Refrigeration Institute -- ARI
Air Conditioning Contractors of America -- ACCA
National Air Duct Cleaners Association -- NADCA
EPA - Environmental Protection Agency - Indoor Air Quality
Contracting Business Trade Publication
Refrigeration Service Engineers Society - RSES
Sheet Metal and Air Conditioning Contractors Association - SMACNA