An AHR Show, or AHR Expo, is the world's largest trade show for the Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) industry, where manufacturers, engineers, contractors, and professionals gather to see new technologies, network, and learn about the future of HVACR. It's a massive event featuring thousands of exhibitors showcasing innovations in areas like energy efficiency, indoor air quality, and smart building controls...... - AHRexpo.com