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The Air Conditioning, Heating, and Refrigeration Institute ( AHRI ), formed in 2008 by a merger of the Air-Conditioning and Refrigeration Institute (ARI) and the Gas Appliance Manufacturers Association (GAMA), is a North American trade association of manufacturers of air conditioning, heating, and commercial refrigeration equipment. [ 1]
This chronological list of school shootings in the United States since the year 2000 includes school shootings in the United States that occurred at K–12 public and private schools, as well as at colleges and universities, and on school buses. Excluded from this list are the following:
In heating, ventilation, and air conditioning in winter months, large commercial buildings interior spaces may need cooling, even while perimeter spaces may need heating. [2] Free cooling is the production of chilled water without the use of a chiller , and can be used generally in the late fall, winter and early spring, in temperate zones . [ 3 ]
A professional doctoral degree for naturopathic practitioners in the United States. Holders of the ND or NMD degree are known as naturopathic physicians in states where they may be licensed. The designation NMD is used in Arizona. Doctor of Business Administration. DBA or DrBA. Doctor of Education. EdD or DEd.
Pages in category "Heating, ventilation, and air conditioning companies" The following 102 pages are in this category, out of 102 total. This list may not reflect recent changes .
The Vaillant Group is a company that develops products for heating, cooling and hot water. [1] The company employs ~17,000 people worldwide and generates an annual turnover of approximately 3.7 billion euros. This makes the Vaillant Group one of the largest companies in its sector in Europe. The family-owned company is a global market leader in ...
Free cooling systems can have very high efficiencies, and are sometimes combined with seasonal thermal energy storage so that the cold of winter can be used for summer air conditioning. Common storage mediums are deep aquifers or a natural underground rock mass accessed via a cluster of small-diameter, heat-exchanger-equipped boreholes.
Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [2][3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4] Heat pumps are similar in many ways to air conditioners, but ...