HVAC Training Material Question


I’m not quite clear on exactly what the following statement is telling me:

“Aluminum and copper ducts are typically installed outside the building.”

Where? That is, I’m trying to picture in my mind an application or an illustration I may have seen this scenerio. Can someone give me an example or attach an illustration or photo where this is done?


Steve :shock:

Commercial and/or rooftop applications

Thanks. That does ring a bell now. I wasn’t thinking so much outside the realm of a home inspection…Regards, Steve