Brand new building. Originally had to go there in March because these brand new Lennox units wouldn't heat. Basically the installing contractor set the units on the curbs, hooked up the thermostats, and left. The fresh air hoods for the economizers weren't installed, the condensate drain ports had pipe plugs in them, this unit still has a piece of cardboard over the condenser, and about ten other things.
The tenant is a national account, they purchased the units themselves and hired a local contractor to install. They called the installer and he said that he was all done with everything, the units where working fine, and that both units must have broken and someone from Lennox would have to come and warranty them.
Installation problems aside, the main issue was that the blowers on the units where all spinning backwards, so the units had both tripped out on high limit. I'm told the installer gave a 90-Day warranty, so I didn't do any "work" to the units. I wrote down all the problems and told them to have the installer come back.
So... Now that its warm out, I get a call that one of these units won't cool. Guess what, it still has the cardboard over the coil. The electrician came and changed phases so the blower rotation was right, but the hvac installer never came back to finish. I've seen his ad on craigslist, kind of scary.