The 2004 AHR Expo held Jan. 26-28 drew the largest crowd the show has ever seen in the West Coast. More than 22,000 visitors registered, and more than 1,500 companies - 277 of them international - exhibited. Highlights from the show included the second annual AHR Expo Innovation Awards in eight different HVACR product categories and free educational programs offered by AHR Expo®, ASHRAE and eight other endorsing associations.