is there any problems with these aircos ? like cracked heat exchangers and such ? just wondering. I got one in my house actually, house thats built in the 1980s. IT still runs fine, just don't have enough cash to replace it. I do regular maintenance on it ie oil the blower and clean the return air side. Although, the one in the picture seem more modernized, mine only has the gas valve, and the high limit switch and the connections directly to the blower. How Big of a unit is this one you inspected ?, mine is like the size of a door the height. When the burners ignite, you can hear the whooop sound from across the house.
