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2. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.

3. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   Sylvester documented the new ways of heating hospitals that were included in the design, and the healthier features such as self-cleaning and air-refreshing toilets. [10] The infirmary's novel heating system allowed the patients to breathe fresh heated air whilst old air was channeled up to a glass and iron dome at the centre.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   An air conditioner designed for an occupied space will typically achieve a 30% to 60% relative humidity in the occupied space. [51] Most modern air-conditioning systems feature a dehumidification cycle during which the compressor runs. At the same time, the fan is slowed to reduce the evaporator temperature and condense more water.

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Liebert Corporation - Wikipedia

   en.wikipedia.org/wiki/Liebert_Corporation

   Founded by Ralph C. Liebert (1918-1984) as Capitol Refrigeration Industries in 1946, Liebert Corporation was formed in 1965 as the industry's first [citation needed] designer and manufacturer of computer room air conditioning (CRAC) systems. Targeted to the mainframe computer data-processing market, Liebert CRAC systems were the first totally ...

7. Trane - Wikipedia

   en.wikipedia.org/wiki/Trane

   Trane's first air conditioning unit was developed in 1931. In 1982, Trane purchased General Electric's Central Air Conditioning Division. [2] [3] With that purchase came many of the most recognizable traits of Trane's residential air conditioning products. Many of those traits, like the distinctive red "Climatuff" compressors, rotary ...