HVAC is the acronym for Heating, Ventilation and Air-conditioning system. HVAC is a technological system used to achieve distribution of a balanced air-heat regulation in the environment. HVAC helps improve the quality of indoor air and helps in providing a relaxing atmosphere. This technology is built upon the principles of thermodynamics, fluid mechanics and heat transfer. Refrigeration is sometimes added to this system, where we might have something like HVAC&R OR HVACR. But what we commonly find is HVACR.
HVAC are used to provide and regulate heating and cooling services to buildings. With an HVAC system installed in a home, the ambient environment of a residential building or a commercial building and an industrial space is regulated. The indoor installation of HVAC system is not only done in residential buildings or commercial spaces. HVAC system can also be installed on ships and submarines, and in marine environments, where best building practices demands putting into consideration the peculiar temperature and humidity of water bodies or areas The ambient environment which includes the temperature, humidity, air flow and air filtering must be properly planned for as demanded by best practices in the construction industry. Requirement for standard practices in the construction of new buildings demand that an HVAC system be installed. An HVAC system is used to provide a relaxing and comfortable indoor atmosphere; the system is used to make available outdoor air that helps in diluting air from inside which have been contaminated with airborne contaminants such as odors from people within, volatile organic compounds (VOC’s) emitted from interior furnishings, chemical used for cleaning, and biological and synthetic airborne contaminants. . The indoor environment of buildings generally is therefore safe and healthy with the installation of HVAC system which uses fresh air from outdoors and escapes contaminated air from within through outward channels.
The HVAC industry grew from the inventions and discoveries made by tech giants Nikolay Lvov, Michael Faraday, Willis Carrier, Edwin Ruud, Reuben Trane, James Joule, William Rankine, Sadi Carnot, and a host of other inventors along this field. The HVAC industry started full blown at the same time with the industrial revolution. As the years passed by, new improvements were made upon this technology, higher efficiency and control of the system are being introduced by companies and inventors worldwide. The HVAC industry is a multi-dimensional enterprise, companies and individual experts can choose to specialize in the different levels of specialized industrial focus. The different levels of activities in the HVAC industry include operation and maintenance, system design and construction, equipment manufacturing and sales, also education and research to come up with novel ideas and improved innovation in the existing technology foe better performance according to industry standard. There are several organisations that regulate and standardize the manufacturing and installation in buildings. Some are defined by country location while others have an international spread. include American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), HARDI, SMACNA, ACCA. The International Standard Organisation (ISO) which has an international outlook is also involved in the regulatory and standardization process of the HVAC industry.