The Newcombe Separator has a cup-shaped part at its center that spins at high speed, creating centrifugal force.

Inspired by street cleaners in Kentucky, Hill came up with the idea of incorporating water into the Rexair design, claiming that this would trap dust and dirt.

[citation needed] A newly designed Rexair Cleaner was released in 1955 with a motor allegedly twice as powerful as its predecessor.

[citation needed] In 1969, Rexair opened a 100,000 square foot manufacturing facility in Cadillac, Michigan.

In the 1980s, Rexair developed an international sales and distribution network, and the Rainbow was modified to meet the specific demands of countries around the world.

[citation needed] In 2001, Paul Vidovich took charge of Rexair, as president and CEO, and in 2002, he also assumed the responsibilities of chairman.

[3] On 26 February 2019 Newell Brands announced it would be selling its Rexair business,[4] the maker of Rainbow vacuum products, to private-equity firm Rhone Capital.

[6] On June 16, 2020, Rexair announced recalls to their Repair Rainbow SRX Vacuums due to fire and burn hazards.

Rexair has been issued a certificate from the Association of Home Appliance Manufacturers (AHAM), [officially adding to] the title of vacuum cleaner, "air filter".

[citation needed] Rexair teaches sales and marketing techniques through corporate distributor developers and through training seminars.

[citation needed] CEO Paul Vidovich and his staff travel the world educating distributors on developing the Rainbow business.