Carrier Corporation was acquired by United Technologies Corporation (UTC) in July 1979. Prior to the acquisition by UTC, Carrier Corporation was known as the Carrier Air Conditioning Company.
International Comfort Products (ICP), headquartered in Lewisburg, Tennessee, was acquired by Carrier in 1999. In the 1990s Carrier stopped using the "Day & Night" brand (which was the "D" in the BDP division, or Bryant-Day & Night-Payne) but it was revived in 2006 by ICP.
In 2001 Carrier was the "world's largest manufacturer of air-conditioning, heating, and refrigerator equipment" with a "total employment of 42,600" and a revenue of $8.9 billion.
In early 2008, Carrier acquired Environmental Market Solutions, Inc. (EMSI), an environmental and green building consulting company based in the United States. 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).
Willis Carrier moved his facilities from New Jersey to Syracuse, New York in the 1930s. During the late 20th century, when it was acquired by UTC, it was Central New York State's largest manufacturer. 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. Meanwhile, managerial employees were moved closer to UTC's Connecticut corporate headquarters which represented a challenge to the local economy. Over the course of 2011 the majority of the manufacturing buildings of the Syracuse campus were demolished at a cost of nearly $14 million. 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. This site also houses the Customer Care Call Center for Carrier branded products.
According to wikipedia