Fedders use to make a package unit that went in the attic.Had a call on my first one told the lady I would go around the back and check it out, I could here it running from the porch. Went all the way around and back to the door I thought someone was pulling my leg. Sure enough it was in the attic. The condenser used a blower wheel that sucked air up a 12 inch duct from the eve acrossed the coil and back out to the eve.Worked ok but very loud.
Yep, I inherited about 20 of these all HP's. When they finally died the attics were SO SMALL, I had to cut them apart with a torch to get them out! And we had to get them out to install a new unit. What a PITA