When I was a pro mechanic, the whole compressed air system had moisture removal, because I don't want that shit in my air tools, either. I don't know about Cost

When I was a pro mechanic, the whole compressed air system had moisture removal, because I don't want that shit in my air tools, either. I don't know about Costco, but of the shops I know of, it's one big compressor for tools, tires, etc.