"We thought it was theft proof," owner Brad Eckoff told KOAT Action News 7. "The thing weighs like 600 pounds."
The criminals hauled it away in a gold truck after being caught on surveillance video.
Eckoff told KOAT Action News 7 he doesn't know how the thieves pried it loose.
The thieves had to roll the air compressor down an 8-foot drop to get it onto the bed of the truck.
Police are looking for leads.
The $1,500 necessity was a "game changer" for the shop.
"It's a really expensive piece of equipment. It's not covered by insurance," Eckoff told KOAT Action News 7.