The ASHI standards require identification of the fuel source for the AC. I'm confused. I know this is probably a really stupid question, but, here goes anyway. On a shared system, the AC only shares the supply ducts. Right?
The AC unit doesn't rely on the fuel source of the furnace. Right? Wouldn't the fuel source for an AC always be electric? I told you it was a dumb question but if you don't ask, you don't learn. Please be gentle.