The problems I have with the 120v Starcool are:
The chassis mount evaporator fan corrodes out on a seasonal basis requiring replacement.
It's just too damn noisy, inside and out.
It's too power hungry to use anywhere but on shore power or generator(see, too damn noisy)
Running the motor and running the cab AC has served me better on the rare occasions where I needed a cool down/dehumidify cycle.
'07 GMC 2500 6.0