[7] With the onset of World War I in late 1914, the Buffalo Forge Company, where Carrier had been employed for 12 years, decided to confine its activities entirely to manufacturing.

The company has received Leadership in Energy and Environmental Design (LEED) certification from the US Green Building Council for its factories in Charlotte, NC, and Huntington, IN (2009), Shanghai, China (2010), and Monterrey, Mexico (2011).

[13] In September 2013, Carrier, Otis, and United Technologies Fire and Security were combined into one subsidiary, UTC Building & Industrial Systems.

HVAC Systems and Services North America president Chris Nelson cited "ongoing cost and pricing pressures" and Carrier's "existing infrastructure and a strong supplier base" in Mexico, saying that the move would allow the company "to operate more cost-effectively.

[18] Over the November 2016 Thanksgiving holiday weekend, President-Elect Donald Trump tweeted that he was in talks with Carrier Management to keep the factory in Indiana and not move to Mexico.

[25] Layoffs began at the end of July 2017, with each worker receiving one week's salary for each year of employment, education and job training, plus 6 months of health insurance as part of the severance package.

"[28] On November 26, 2018, United Technologies announced that it would spin off UTC Climate, Controls & Security as an independent company known as Carrier Global Corporation.

Due to increasing labor and union costs in the Central New York area, Carrier has substantially downsized its presence in Syracuse, with manufacturing work being moved to a variety of domestic and international locations.

Despite the loss of manufacturing jobs, the suburban Syracuse Campus, in DeWitt, New York, remained the primary engineering and design center for Carrier products, with over 1,000 employees and contractors on site.