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Goodman Manufacturing is an American company operating as an independent subsidiary [1] [2] of Daikin Group, the world's largest manufacturer of heating, ventilation and air conditioning products and systems. The company, founded in 1975 and based in Waller, Texas, manufactures residential heating and cooling systems. [3]
Coleman Heating & Air Conditioning is a major manufacturing brand of HVAC equipment, and was formerly an independent HVAC manufacturing company. The company began as a division of the Coleman Company in 1958 and was acquired by Evcon in 1990, which in turn was acquired by Johnson Controls in 1996.
Daikin entered the North American air conditioning market in 2004. [7] In 2006, Daikin Industries acquired McQuay International, a Minneapolis, Minnesota–based global corporation that designs, manufacturers and sells commercial, industrial and institutional heating, ventilation and air conditioning (HVAC) products. [8]
In December 2007, INFICON acquired Sigma Instruments Inc. [25] In February 2016, US based, InstruTech Inc., was acquired by INFICON. [26] [27] In October 2018, Final Phase Systems LLC, assets of a software developer, and Techno-Tools Corp., assets of a manufacturer of hand-held leak detectors, were acquired by INFICON. [28] [29]
Sigma heat, denoted , is a measure of the specific energy of humid air. It is used in the field of mining engineering for calculations relating to the temperature regulation of mine air. Sigma heat is sometimes called total heat , [ 1 ] although total heat may instead mean enthalpy .
The company also produces and sells products under the Ruud brand name. Rheem is headquartered in Atlanta, Georgia, and is an is an independent subsidiary of Paloma Industries. [2] [3] Rheem started in 1925 as a packaging supplier to the petroleum industry. The company also manufacturers of water heating and HVAC equipment in the United States.
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