The Air-Conditioning and Refrigeration Institute (ARI) is the trade association representing manufacturers of more than 90 percent of the air conditioning and commercial refrigeration equipment installed in North America.
An internationally recognized leader in developing standards for and certifying the performance of these products, ARI is also a major advocate for the heating, ventilation, air conditioning, and refrigeration (HVACR) industry both domestically and abroad. ARI Standards and Guidelines are available for free download as Adobe Acrobat (PDF) files.