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2. Tested and Approved: The Best Air Conditioners for Staving ...

   www.aol.com/lifestyle/best-air-conditioners...

   Best Overall: LG LW1517IVSM Window Air Conditioner. Best Budget: Frigidaire FFRA051WAE Window Air Conditioner. Best Design: July Window Air Conditioner. Quietest: Midea U-Shaped Smart Inverter ...

3. The best portable air conditioners - AOL

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   Best portable air conditioner for smaller rooms:Black+Decker Black+Decker BPACT08WT 8,000 BTU Portable Air Conditioner. ... Free-standing air conditioners are a pricier alternative to window units.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [60]

5. The Best Portable Air Conditioners to Keep You Cool in Any Space

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   We've rounded up the coolest portable air conditioners you can buy online. The post The Best Portable Air Conditioners to Keep You Cool in Any Space appeared first on Reader's Digest.

6. Packaged terminal air conditioner - Wikipedia

   en.wikipedia.org/wiki/Packaged_terminal_air...

   Packaged terminal air conditioner installed in a residential apartment. A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in ...

7. Willis Carrier - Wikipedia

   en.wikipedia.org/wiki/Willis_Carrier

   cleanse the air; After several more years of refinement and field testing, on January 2, 1906, Carrier was granted U.S. patent 808,897 for an Apparatus for Treating Air, the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first function and cooling it for the second.