The water-filter vacuum built in Cadillac

Maybe you have sat through a Rainbow vacuum demonstration in someone’s living room. If so, you watched a salesperson pour out a basin of gray, dirty water. It was meant to prove how much your carpet was hiding. That machine filters dust through water instead of trapping it in a bag. And it has been built in Cadillac for more than half a century.

The company is Rexair. The design goes back further than the town’s involvement. The idea of running dust through water dates to the 1930s. The product got its sunny name, the Rainbow, in 1955. Rexair opened a 100,000-square-foot plant in Cadillac in 1969. The Rainbow has been coming off the line in northern Michigan ever since. It is a genuinely unusual thing to make here. Not a car part or a piece of furniture, but a premium home appliance sold almost entirely in person.

That sales method is half the story. Rainbows are not stacked on a store shelf next to the cheap uprights. They move through independent distributors. Those distributors book in-home appointments and run the demonstration in front of you, water basin and all. It is a throwback to the door-to-door era. Somehow it has survived into the age of two-day online shipping.

The Cadillac plant has stayed busy enough to keep growing. In 2022 the company put money into expanding the facility. It even pulled a production line back from Asia to run it in Wexford County instead. That is the kind of reshoring that does not make national news. But it means steady shifts for the people who build the things.

So picture the next Rainbow demo ending with that dramatic splash of muddy water on the kitchen counter. You can mention where the machine was actually born. Not in some far-off factory, but a few miles off the highway in Cadillac. That is where they have been quietly building it the whole time.