Thieves have already hit almost a dozen locations. They tear apart the units to sell the valuable copper inside.
Workers at Camp Bow Wow off Page Road Extension in Durham say they were hit twice. It happened once months ago, and again just last week.
Just a few miles away on Page Point Circle, thieves targeted Louie Charlie's Tavern and Grill.
The Durham County Sheriff's Office says, in the past six months, at least 10 locations have been hit. They warn people to try to lock up their A/C units, and put lighting around them so they are not in the dark.
While it will cost some money, it's not as much as it would cost to replace the A/C unit.
No one has been arrested for the thefts. Right now, the sheriff's office hasn't said if the incidents are related.