Company Profile

Watlow designs and manufactures industrial heaters, sensors and controllers - all of the components of a thermal system.  Designing and manufacturing the complete thermal system allows us to recommend, develop and deliver the optimum thermal solution for our customers' equipment and process heat requirements.  We have more than 85 years providing the most innovative thermal solutions to our customers in a wide range of industries.    

Keyword ,Please do not delete, Customer reference

  • Heater
  • Sensor
  • Controller
  • Thermal Solution
  • Fuel Gas Heater
  • Electrical Reboiler
  • Flexible Heater
  • RTD
  • Multi Loop Controller
  • Thermocouple
  • Thermowell
  • Power Controller
  • Watlow SCR
  • Switching Device
  • Watlow
  • Firerod
  • Watrod
  • Fire Bar

-

Watlow was founded in 1922, and is still family owned. We have grown in product capability, market experience and global reach. We hold more than 200 patents and employ 2,000 employees working in 12 manufacturing facilities in the United States, Mexico, Europe and Asia. 

-

We have sales offices in 14 countries around the world and a global distributor network. Our company has grown at an exponential rate but our commitment remains the same – to provide our customers with superior products and services for their individual needs.

-

Since 1922, Watlow has grown in product capability, market experience and global reach. We employ 2,000 team members working in 13 facilities in the United States, Mexico, Europe and Asia. We also have sales offices in 16 countries and a global distributor network.

Global Web Sites

  A104369E C3E3 11E1 8457 12314000960A

Our History

1920s
  • 1922 - Louis Desloge Sr. founds Watlow in St. Louis, Missouri to manufacture electric heating elements for the shoe industry. The company name Watlow is selected referring to "low-watt" heaters to replace steam heat. Watlow produced its first heafters in a rented corner space on the second floor of a machine shop.

1930s

  • 1931 - Watlow introduces electric immersion heaters replacing cumbersome steam pipes and fire-hazardous gas.

1940s

  • 1945 - Watlow begins selling products outside the United States.
  • 1948 - George Desloge, Louis's son, joins Watlow. George has a degree in Aeronautical Engineering.

1950s

  • 1950 - George Desloge invents the narrow band cylindrical heater with its patented clamping strap for use in plastics processing

1960s

  • 1961 - Watlow builds a new 30,000 square foot facility on a 28-acre tract in St. Louis County, Missouri.

1970s

  • 1970 - Watlow's radiant heater line, RAYMAX®, is introduced.