HVAC Training Material Question

[Stephen P. Shockley]

Hi,

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?


Thanks,

Steve

[Jeffrey R. Jonas]

Commercial and/or rooftop applications

[Stephen P. Shockley]

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