Update #1 - within 20 minutes I was told they'd pay for what my AC guy has claimed damage wise thus far. My stress level, already pretty low with them, still low - moving up a star - pipe drops happen.
Original (with some added detail):
We're going to see how this plays out - to set the stage, I'm at about $6500 in with them for a large scale cast iron pipe replacement that finished Thursday. This was for replacing a main to within 10 feet of the sewer, roughly 58 feet to the house, under the house, hundreds of pounds of old cast iron pipe.
Friday I was informed the AC was out and called my AC guy not thinking anything of anything related. It'd also been a day, but I didn't know that the tenant's had not been there that night.
Monday my AC guy got here and said they'd dropped the old cast iron pipe on the air intake which crushed it, broke straps, blew out a capacitor due to no air being able to circulate, and resulted in $300+ worth of AC repair (at the moment, he's got to come back)
Contacted Mr Rooter both via voice mail and email, we'll see how they want to play it. (so far very classy, they've said they'll have a check in my hand tomorrow)