Inventor Spotlight: Warren S. Johnson

C4IP is recognizing Warren S. Johnson (1847-1911), who helped millions of Americans live in comfort with his invention of the first temperature regulation system.

  • Growing up in rural Wisconsin in the mid-1800s, Johnson’s passion for learning led him to embark on a career as a teacher and school administrator despite lacking a formal education.
  • As a professor at the State Normal School, Johnson invented an efficient heat regulation system to keep the building warm in winter, which he patented in 1895.
  • Johnson’s inventions were soon implemented in buildings around the world, where they revolutionized the productivity of indoor work.
    • Today, Johnson Controls supports over 40,000 buildings in North America, including the U.S. Capitol and New York Stock Exchange.
  • The technology pioneered by Johnson has now become ubiquitous: Over 80% of U.S. buildings incorporate heating technology, and the global market for heating and cooling services is projected to generate over $270 billion in revenue this year alone.
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