Minneapolis-Honeywell T111 Chronotherm Thermostat

Description
The Minneapolis-Honeywell Regulator Company of Minneapolis, Minnesota manufactured this Chronotherm thermostat around 1940. This Chronotherm is the first in the line to have a numerical clock and not an analog clock to turn the thermostat on and off. This Chronotherm was advertised as the first to “make automatic heating automatic” and touted the benefits of saving fuel as patriotic and helping the war effort. The digital clock mechanism did not work as well as the previous analog clock’s and the design was quickly discontinued.
The ubiquity of thermostats in 21st century homes shrouds the decades of innovation, industrial design, and engineering that went into making them an everyday object in almost every home. In the early 20th century, a majority of American households still heated their homes with manually operated furnaces that required a trip down to the basement and stoking the coal fired furnace. Albert Butz’s “damper-flapper” system was patented in 1886 and allowed user to set the thermostat to a certain temperature which would open a damper to the furnace, increasing the fire and heating the house. Progressive innovations allowed for the thermostats to use gas lines, incorporate electricity, turn on at a set time, include heating and cooling in one mechanism, and even connect to the internet.
Location
Currently not on view
Object Name
thermostat
Measurements
overall: 3 3/4 in x 5 1/2 in x 2 13/16 in; 9.5504 cm x 13.97 cm x 7.112 cm
overall: 3 5/8 in x 5 1/4 in x 2 1/2 in; 9.2075 cm x 13.335 cm x 6.35 cm
ID Number
2008.0011.19
accession number
2008.0011
catalog number
2008.0011.19
subject
Domestic Furnishings
Engineering, Building, and Architecture
Thermostats
See more items in
Work and Industry: Mechanical and Civil Engineering
Thermostats
Data Source
National Museum of American History, Kenneth E. Behring Center

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Image CAPTCHA
Enter the characters shown in the image.