Minneapolis and Wabash.

The Honeywell name belongs to one founder, but the company grew from two. MNopedia, the Minnesota Historical Society’s encyclopedia, in an entry by John Fitzgerald published on 30 January 2014, traces the Minneapolis side to Albert Butz, a Swiss immigrant who patented a “damper flapper” that opened a furnace damper to make a coal fire burn hotter. In 1886, the entry says, Butz founded the Butz Thermo-Electric Regulator Company in Minneapolis; Wikipedia gives 1885 for the founding. Two years later Butz left the business.

The Minneapolis company then changed its name several times. MNopedia says it became the Consolidated Temperature Controlling Company in 1888, that Minneapolis businessman William R. Sweatt owned all of it by 1900, and that by then it was called the Electric Heat Regulator Company. Sweatt’s thermostats, the entry notes, were stamped with the company name arranged as a semicircle, with “Minneapolis, Minn.” underneath: an early piece of the firm’s visual identity, printed on the product itself.

Customers kept getting the name wrong. Because the company often received letters addressed to “The Minneapolis Heat Regulator Company,” MNopedia says, Sweatt renamed the firm to match in 1912. The company took the name its customers were already using.

The other half of the story was in Indiana. Wikipedia says that in 1906 Mark Honeywell founded the Honeywell Heating Specialty Company in Wabash, Indiana, to make and sell his mercury seal generator, and MNopedia notes that by the 1920s his company was doing well in heating oil as oil replaced coal in home furnaces. The two businesses began to clash, Wikipedia says, and in 1927 they merged as the publicly held Minneapolis-Honeywell Regulator Company, based in Minneapolis, with Mark Honeywell as president and W. R. Sweatt as chairman. MNopedia adds that Harold W. Sweatt, the son of W. R. Sweatt, became president of the merged company in 1934. The hyphenated name joined a city and a surname, and it was the surname that would last.

The Round.

The product that made the name familiar in homes was a circle. MNopedia says that in 1941 engineer Carl Kronmiller and industrial designer Henry Dreyfuss created a round home thermostat, but that the project was shelved because of the Second World War. The design was introduced to the public in 1953, the entry says, when Minneapolis-Honeywell was looking for a new product; the T-86 Honeywell Round thermostat became known simply as The Round.

The entry describes the design in practical terms: The Round was easy to make, easy to use and easy to identify. Minneapolis-Honeywell offered it in various shades to match wall colours, so the thermostat could blend into a room instead of standing out from it. In 1960, MNopedia says, a day-night version with a wind-up timer was introduced, and by 1966 customers could buy a model that controlled both heating and cooling.

The Round passed into design history. MNopedia says it was featured in a 1997 exhibition of Henry Dreyfuss’s work at the Smithsonian Institution’s Cooper-Hewitt, National Design Museum in New York, and that it remains in the Smithsonian’s collection. Decades later it was still a point of comparison: the architecture and design critic Alexandra Lange, writing on 13 February 2012, noted the operational similarities between the Dreyfuss-designed Honeywell Round and the new Nest thermostat, and reported that Honeywell had sued Nest that week over patents.

Lange added that two of the cited patents dated from the period between the 1930s and the 1950s when Honeywell’s engineers were working with Dreyfuss to make the thermostat more intuitive. In Lange’s account, the new Nest and The Round of 1953 shared a basic gesture: a circle on the wall that the user turns to change the temperature.

Surname, dial and spin-offs.

A corporate group’s identity has a different job from a single product’s. It has to sit above many businesses at once, often in places the public never sees: an annual report, a shipyard gate, a share certificate, a letterhead, a hard hat. That tends to push group marks towards restraint. Many began with a founder’s name or a place name, and some compressed it into a monogram or a set of initials that could be stamped, embroidered or painted at any size.

Over time the mark usually becomes a parent signature rather than a face. Operating units keep their own names and colours, while the group mark appears in a fixed position as an endorsement, a small line of type or a symbol in a corner. Designers working at this level spend much of their effort on rules for how parent and child marks sit together.

Renames are part of the story too. When a group spins off a division, merges two lines or shifts what it does, the name and mark are often rewritten to match, and older letterforms linger on buildings and archives for years. For designers, the useful lessons are about durability, hierarchy and how a single sign can carry a long and changing history.

Keeping the name.

The city dropped out of the name before the founder did. MNopedia says the company’s name changed to Honeywell in 1963, ending the hyphenated Minneapolis-Honeywell form after more than three decades. By then, MNopedia says, the group was involved in aerospace, turbochargers and computing as well as electrical controls.

The name then survived a merger in which it could easily have been lost. In 1999, MNopedia and Wikipedia both say, Honeywell merged with AlliedSignal, and the headquarters moved from Minneapolis to Morristown, New Jersey. The combined company kept the Honeywell name, which Wikipedia attributes to its brand recognition, and MNopedia credits in no small part to The Round. The corporate name became Honeywell International Inc., and Wikipedia gives the company’s headquarters today as Charlotte, North Carolina.

The name has since been shared out among spin-offs. Wikipedia says Honeywell announced in October 2017 that it planned to spin off its homes and transportation systems businesses as separate publicly traded companies, and that in 2018 Honeywell spun off its turbocharger business, Honeywell Turbo Technologies, now Garrett Advancing Motion, and its consumer products business, Resideo. In 2025, Wikipedia says, Honeywell announced a plan to split into three companies, including one named Solstice Advanced Materials.

For a design guide, Honeywell shows how a founder’s surname can outlast a city, a merger partner and a string of spin-offs, while one well-designed product carries the name into ordinary homes. Compare 3M, another Minnesota manufacturer, and GE, an industrial group whose name also spans many businesses. For this guide we use dial red, brick and soot with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Honeywell’s identity on hand — save it to a board in the Made Good inspiration library.