12 Ton Air Conditioner  When using electronic equipment we recommend that a battery backup should be used. Price does not include additional use cost which will be determined after return of the equipment. Air conditioner pricing is per day with a run time of 8 hours per day, anything over 8 hours per day will require an additional charge. APPROX. FEE TILL HOURS OF USAGE ARE READ ON METER AT THE TIME OF PICK UP