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History of Innovation

Carrier has been innovating heating and cooling solutions since 1902—when our founder, Willis Carrier, developed the first modern air conditioning system and changed the way we work and live.

willis carrier, the inventor of modern air conditioning
Launching an Industry

On July 17, 1902, young research engineer Willis Carrier designed the first modern air-conditioning system after realizing that water could be used to remove moisture from air. Little did he know that this invention would lead to his launch of a company and would create an entire industry essential to global productivity and personal comfort. The first system included chilled coils, fans, and ducts to control air temperature and maintain constant humidity. He received a patent for the design in 1904 and went on to start the Carrier Engineering Corporation in 1915.

1920 newark research lab highlighting carrier's innovation
Tradition of Innovation

For more than 100 years, Carrier has been leading the industry with innovative ideas, pursuing excellence in heating and cooling solutions for homeowners all over the world. Our products have changed lives, and our commitment to technological excellence has set the standard for the industry.

The Invention That Changed the World

We have been industry leaders since 1915, when Willis Carrier and six other entrepreneurs started the Carrier Engineering Corporation as an independent company.

Willis Carrier’s Rational Psychrometric Formulae
Setting the Standard

Developed in 1914, Willis Carrier’s Rational Psychrometric Formulae merged science with his design of air conditioning systems, becoming an essential tool for generations of engineers. Today, it remains the basis of HVAC designs.

Willis Carrier’s innovation of the centrifugal refrigeration machine
Influential Innovation

Invented in 1922, Willis Carrier’s single most influential innovation was the centrifugal refrigeration machine, more commonly known as a chiller. This extended the reach of air conditioning beyond commercial applications like factories and mills, and brought it into the systems we see in homes today.

Taking the LEED®

We've continued Willis Carrier’s innovations and environmental consciousness. In 2001, Carrier’s Monterrey Commercial plant became the first industrial facility in the global HVAC industry to be Leadership in Energy and Environmental Design (LEED®) Gold Certified.

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willis carrier sitting with margaret ingels the first woman air conditioning engineer in the country
Changing the Industry

From day one, we’ve been leading the industry with innovative ideas, setting the standards for all who follow.

Embracing Diversity

In 1917, before women were allowed to vote in the United States, Willis Carrier hired Margaret Ingels as the first woman air-conditioning engineer in the country. She later served on President Herbert Hoover’s Conference on Home Building and Home Ownership.

Keep Exploring

Innovation in Energy Savings

Our patented HVAC technology can provide ultra-high efficient operation, which may help you save on your energy costs.

Designed in Indianapolis

This is where innovation happens—our research and development teams, along with engineers, designers, and quality control, work to innovate and build equipment that helps you create your ideal home comfort.

Community Involvement

We have touched lives all across the country and are committed to giving back to the communities we serve.


We incorporate sustainability into everything we do—to do right by the planet and our employees, communities, customers, and shareholders.

Speak Up

Carrier’s Speak Up program offers multiple communication channels for reporting actual, suspected or potential violations of our Code of Ethics through a single platform accessible via a toll-free number or web submission. Both options allow for the anonymous reporting of such concerns.

Speak Up
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