Iconic structures like Grand Central Station and the Burj Khalifa rely on HVAC systems produced by Trane Co. 

But while the company has become a global leader in cooling technologies, it's managed to stay true to its roots in the La Crosse area. 

Trane Co. started as a small family business. 

Tom Gallant, an engineer at Trane Technologies, said the manufacturing and production of Trane's iconic chillers still happens in La Crosse.