Portable propane heaters load up a house with moisture, while a new home's HVAC system - if installed - gets loaded up with construction dust if used for temporary heating and cooling during new home construction, Wade Paquin has a better solution: A portable five-ton, rooftop packaged unit, rigged on a trailer that can go from job to job and move around the jobsite. In this recent Build Show Network video, Wade explains the benefits of what he calls 'the Ferrari of temporary heating units', and describes how his system works.