Trane Inc. is a subsidiary of Ingersoll Rand and is the successor company to the American Standard Companies. It is a global provider of heating, ventilating and air conditioning (HVAC) systems and building management systems and controls under the Trane and American Standard brand names. Its offerings include service and parts support and financial solutions.

A global, diversified manufacturing and services organization, Trane employs more than 29,000 people at 104 manufacturing locations in 28 countries, and has annual sales of more than $8 billion. In addition to their activity in HVAC systems, Trane is involved in energy conservation and renewable energy projects.

Trane has offices, service operations, joint ventures and manufacturing facilities around the world. Trane has its international headquarters in Piscataway, New Jersey.

In 1885, James Trane, a Norwegian immigrant from Tromsø, opened his own plumbing and pipe-fitting shop in La Crosse, Wisconsin. He designed a new type of low-pressure steam heating system, Trane vapor heating. Reuben Trane, James' son, earned a mechanical engineering degree (B. S. 1910) at the University of Wisconsin–Madison and joined his father's plumbing firm. In 1913, James and Reuben incorporated The Trane Company. It was Reuben's invention of the convector radiator in 1923 that firmly established the company's reputation as an innovator, a reputation Trane people have been building on ever since.

By 1916, the Tranes were no longer in the plumbing business, but rather were focusing their attention on manufacturing heating products. Reuben conceived the idea of the first convector radiator in 1925 which replaced the heavy, bulky, cast-iron radiators that prevailed at the time. Trane's first air conditioning unit was developed in 1931.

In 1982, Trane purchased General Electric's Central Air Conditioning Division. With that purchase came many of the most recognizable traits of Trane's residential air conditioning products. Many of those traits, like the all aluminum spiny outdoor coil and the all aluminum evaporator coil, are still found in Trane's current residential equipment lines.

In 1984, Trane was acquired by American Standard Inc., and became a fixture in the American Standard Companies business. Following a leveraged buyout in 1988, American Standard returned as a publicly held corporation in 1995.

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