Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR.
Johnson Controls International is an American, Irish-domiciled multinational conglomerate headquartered in Cork, Ireland, that produces fire, HVAC, and security equipment for buildings. As of mid-2019, it employed 105,000 people in around 2,000 locations across six continents. In 2017 it was listed as 389th in the Fortune Global 500. It became ineligible for the Fortune 500 in subsequent years since it relocated its headquarters outside the U.S.
UTC Climate, Controls & Security was a global provider of building technologies offering fire safety, security, building automation, heating, ventilating, air-conditioning, and refrigeration systems and services. A wholly owned subsidiary of United Technologies Corporation, UTC Climate, Controls & Security was a $16.7 billion company with 55,000 employees serving customers in more than 180 countries.
Carrier Global Corporation is an American multinational heating, ventilation, and air conditioning (HVAC), refrigeration, and fire and security equipment corporation based in Palm Beach Gardens, Florida. Carrier was founded in 1915 as an independent company manufacturing and distributing HVAC systems, and has since expanded to include manufacturing commercial refrigeration and food service equipment, and fire and security technologies.
C.H. Robinson Worldwide, Inc. is an American transportation company that includes third-party logistics (3PL). The company offers freight transportation, transportation management, brokerage and warehousing. It offers truckload, less than truckload, air freight, intermodal, and ocean transportation.
Variable air volume (VAV) is a type of heating, ventilating, and/or air-conditioning (HVAC) system. Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant or varying temperature. The advantages of VAV systems over constant-volume systems include more precise temperature control, reduced compressor wear, lower energy consumption by system fans, less fan noise, and additional passive dehumidification.
Emcor Group is mechanical and electrical construction, industrial and energy infrastructure, and building services company based in Norwalk, Connecticut, US.
The Home Depot Pro, headquartered in Jacksonville, Florida, is a wholesale distributor and direct marketer of maintenance, repair and operations (MRO) products for non-industrial businesses in the United States. The Home Depot Pro distributes products such as HVAC, janitorial supplies, plumbing supplies, and security supplies.
A freeze stat is a temperature sensing device for HVAC that monitors a heat exchanger to prevent its coils from freezing. Freeze stats can be used on both refrigerant-to-air, and refrigerant-to-liquid type heat exchangers and serve different purposes with similar goals for each.
Trane is a manufacturer of commercial and residential heating, ventilation, and air conditioning (HVAC) systems, along with building management systems and controls. The company is a subsidiary of Trane Technologies, a company focused on manufacturing HVAC and refrigeration systems. Trane employs more than 29,000 people at 104 manufacturing locations in 28 countries, and has annual sales of more than US$8 billion.
The Viessmann Group is a German manufacturer of heating and refrigeration systems headquartered in Allendorf (Eder), Germany. With 22 production companies in 12 countries, distribution companies and representative offices in 74 countries and 120 sales offices throughout the world, Viessmann is international in its orientation. More than 54 percent of turnover is generated abroad. Since January 2022, the company is led by Martin Vießmann, Maximilian Viessmann (Group-CEO) and Ulrich Hüllmann (CFO). In April 2023, Viessmann announced that it would sell its heat pump division to its US competitor Carrier Global for €12 billion. The transaction was completed on January 2024, Max Viessmann joins the Board of Carrier Global
SPX Corporation is a supplier of highly engineered infrastructure equipment and technologies. The company operates within four markets: heating, ventilation, and air conditioning (HVAC), detection and measurement, power transmission and generation, and engineered solutions. Examples of SPX’s products include cooling towers and boilers, underground pipe and cable locators, power transformers, and heat exchangers. Brands include Waukesha, Dielectric, Fahrenheat, Radiodetection, and Pearpoint. SPX operates in 17 countries with a sales presence in 100 countries. In 2019, the company earned approximately $1.5 billion in annual revenue. Based in Charlotte, North Carolina, SPX employs over 6,000 employees. Eugene Joseph Lowe is the CEO.
Daikin Applied Americas is a corporation that designs, manufacturers and sells heating, ventilation, and air conditioning (HVAC) products, systems, parts and services for commercial buildings. Since 2006, McQuay has been a subsidiary of Daikin Industries, Ltd. McQuay world headquarters are located in Minneapolis, Minnesota, United States. Products are sold by a global network of sales representatives and distributors.
Trane Technologies plc is an American manufacturing company focused on heating, ventilation, and air conditioning (HVAC) and refrigeration systems. The company traces its corporate history back more than 150 years and was created after a series of mergers and spin-offs. In 2008, HVAC manufacturer Trane was acquired by Ingersoll Rand, a US industrial tools manufacturer. In 2020, the tools business was spun off as Ingersoll Rand and the remaining company was renamed Trane Technologies.
Daikin Industries, Ltd. is a Japanese multinational conglomerate company headquartered in Osaka. Daikin is the world's largest air conditioner manufacturer.
Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and is usually less complex than conventional chiller-based systems. This refrigerant is conditioned by one or more condensing units, and is circulated within the building to multiple indoor units. VRF systems, unlike conventional chiller-based systems, allow for varying degrees of cooling in more specific areas, may supply hot water in a heat recovery configuration without affecting efficiency, and switch to heating mode during winter without additional equipment, all of which may allow for reduced energy consumption. Also, air handlers and large ducts are not used which can reduce the height above a dropped ceiling as well as structural impact as VRF uses smaller penetrations for refrigerant pipes instead of ducts.
Midea Group is a Chinese electrical appliance manufacturer, headquartered in Beijiao town, Shunde District, Foshan, Guangdong and listed on Shenzhen Stock Exchange. As of 2021, the firm employs approximately 150,000 people in China and overseas with 200 subsidiaries and over 60 overseas branches. Midea Group is listed on Shenzhen Stock Exchange since 2013. It has been listed on the Fortune Global 500 since July 2016. Midea produces lighting, water appliances, floor care, small kitchen appliances, laundry, large cooking appliances, and refrigeration appliances. It is the largest microwave oven manufacturer, and acts an OEM for many brands. It also has a long history in producing home and commercial products in heating, ventilation and air conditioning (HVAC). It is the world's largest producer of robots and appliances.
Rheem Manufacturing Company is an American privately held manufacturer that produces residential and commercial water heaters and boilers, as well as heating, ventilating and air conditioning (HVAC) equipment. The company also produces and sells products under the Ruud brand name. It is an independent subsidiary of Paloma Industries.What became Rheem started in 1925 as a supplier of packaging to the petroleum industry, and is currently headquartered in Atlanta, Georgia in the United States. The company is one of the largest manufacturers of both water heating and HVAC equipment in the United States, and also produces and markets products in Argentina, Armenia, Australia, Bahrain, China, Chile, Brazil, Canada, Iraq, Kuwait, Mexico, New Zealand, Perú, Oman, Qatar, Saudi Arabia, Singapore, UAE, and Ukraine.
Beacon Roofing Supply, Inc. is an American publicly traded company which sells residential and non-residential roofing products, as well as related building products in North America. As of September 5, 2023, upon the completion of its acquisition of S&H Building Material Corporation, the company has over 490 locations throughout all 50 states and six Canadian provinces, and over 7,400 employees. In addition to roofing, local divisions may also sell windows, siding, decking, waterproofing and other external building products. The company is currently headquartered in Herndon, Virginia.
Airedale International Air Conditioning based in Leeds, West Yorkshire, England is a British manufacturer and worldwide distributor of cooling, heating and HVAC systems.
US$ 7.27 billion (2022)
