The Rivoli, located right on Broadway, was the perfect proving ground. Carrier understood that if air conditioning could succeed in New York City — and in Times Square, no less — the payoff would be immediate. 

His system was scheduled to debut on Memorial Day weekend in 1925, but like many first-of-their-kind installations, things didn’t go exactly as planned. The cooling equipment was late getting started, and when patrons filed in, the theater was still uncomfortably warm. Cardboard fans came out in force, as moviegoers tried to cool themselves. 

Watching closely from the audience was Adolph Zukor, head of Paramount Pictures, who kept a close eye on the crowd. 

Then something happened. Gradually, the temperature dropped. Fans slowed, and one by one, they disappeared. By the time the film ended, the crowd’s attention had shifted from surviving the heat to enjoying the show. In the lobby afterward, Zukor delivered the verdict everyone had been waiting for: “Yes, the people are going to like it.” 

They sure did. By 1930, more than 300 theaters across the country were proudly hanging banners that read “Cooled by Refrigeration.” Air conditioning didn’t just make movies more comfortable — it reshaped the industry’s calendar. Studios could finally count on audiences during the hottest months of the year, laying the groundwork for what would eventually become the summer blockbuster. In a very real way, modern moviegoing — and Hollywood’s biggest season — was built on conditioned air.