The Columbus Fire Department was called to the Hyundai of Columbus used car store, at 3040 National Rd., on Friday afternoon, after a report of smoke in the building.
When firefighters arrived and investigated the situation, they could not find a fire associated with the smoke.
The investigation revealed a faulty rooftop air handling unit. Firefighters disconnected the power to the unit and turned the occupancy back over to the property owners.
There were no injuries and no damage, according to the Fire Department.