With more than 1,800 exhibitors occupying some 400,000 sq ft of booth space, the 2014Â International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), held Jan. 21-23 in New York City, is said to be the largest HVACR exposition ever held in the Northeast. This gallery contains a sampling of the thousands of new products and energy-efficient solutions on display.