I don't do that many rentals but I have wondered about that situation coming up. Generac has a nice propane powered unit that would be good for that.
As far as slow start up, that's probably normal due to the initial current draw of a big motor. A generator doesn't have the same ability to keep up as quickly as a/c house current. I would just take as much load off the machine as possible during start up and you should be fine.
As far as slow start up, that's probably normal due to the initial current draw of a big motor. A generator doesn't have the same ability to keep up as quickly as a/c house current. I would just take as much load off the machine as possible during start up and you should be fine.