[3] Kohler is best known for its plumbing products, but the company also manufactures furniture, cabinetry, tile, engines, and generators.

In February 2017, Kohler Co. acquired UK-based Clarke Energy from the management team and ECI Partners,[4] a multinational specialist in the engineering, construction, installation, and maintenance of engine-based power plants and is an authorized distributor of GE's reciprocating engines in 19 countries worldwide.

A breakthrough came in 1883 when John Michael applied enamel to a cast-iron horse trough to create the company's first bathtub.

In the early 20th century, Kohler made drinking fountains with a "bubbling valve", from which water shot vertically.

Kohler later expanded the offering of Sterling products adding to the faucet line, shower doors, sinks, toilets, and other bathroom accessories.

In 1998, Kohler made a plan to buy back any outstanding shares not owned by the family.

[14] In 1999, a court case was brought by the United States Department of Labor alleging that Kohler Co.'s hiring practices were discriminatory to women.

[18] In January 2020, Kohler paid $20 million in a settlement with the United States Department of Justice, the Environmental Protection Agency, and the state of California over its small engines' violations of the Clean Air Act and California law.

[21] Kohler engines power a range of devices from water pumps to off-road vehicles.

[22] Since 2007, the company has been expanding in the areas of furniture, cabinetry, and tile in the consumer market, and engines and generators for industry.

The Kohler Interiors division of the company comprises Robern, Sprig, Kallista, Ann Sacks Tile and Kast.

Artists have the opportunity to spend two to six months creating works of art using the industrial materials and equipment.

Residents who want to add onto their home, build new outbuildings or fences must receive Kohler Company RRC approval before taking their plans to the planning commission, and comply with the design and aesthetic standards of the Kohler Company RRC.