• In one project, a helicopter was able to put 17 rooftop HVAC units (RTUs) on a building under construction in less than an hour.
• In the right settings, using choppers to lift and place can be fast, efficient and cost-effective.
• Preparations and precautions are essential.

From the article:

Where would we be without helicopters? This week we used a Sikorksy S-58t helicopter to set 17 RTUs on a new project scheduled for completion next year. ...