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File:ACFujitsu2.jpg|An array of air conditioner condenser units outside a commercial office building

File:ACFujitsu2.jpg|An array of air conditioner condenser units outside a commercial office building

File:Röck istván 1896.jpg|The István Röck factory exhibits a small home refrigerator , an air cooling device for large rooms, and a large industrial refrigerator (in the background) at the 1896 National Millennium Exhibition in Budapest

File:Röck istván 1896.jpg|The István Röck factory exhibits a small home refrigerator, an air cooling device for large rooms, and a large industrial refrigerator (in the background) at the 1896 National Millennium Exhibition in Budapest

File:Willis Carrier 1915.jpg|[[Willis Carrier]], who is credited with building the first modern electrical air conditioning unit

File:Willis Carrier 1915.jpg|[[Willis Carrier]], who is credited with building the first modern electrical air conditioning unit

File:GALANZ II.jpg|Evaporator, indoor unit, or terminal, side of a ductless split-type air conditioner

File:GALANZ II.jpg|Evaporator, indoor unit, or terminal, side of a ductless split-type air conditioner

File:Industrial air conditioning unit (DFdB).JPG|Industrial air cooled chillers on top of the shopping mall ''Passage'' in Linz, Austria

File:Industrial air conditioning unit (DFdB).JPG|Industrial air cooled chillers on top of a shopping mall ''Passage'' in [[Linz, Austria]]

File:A649, University Motor Inn, Schuylkill River, Philadelphia, 2018.jpg|Through-the-wall PTAC units, University Motor Inn, Philadelphia

File:A649, University Motor Inn, Schuylkill River, Philadelphia, 2018.jpg|Through-the-wall PTAC units, University Motor Inn, [[Philadelphia]]

File:Osaka Municipal Subway 10 series EMU 021.JPG|Rooftop [[Condenser (heat transfer)|condenser]] unit fitted on top of an [[Osaka Municipal Subway 10 series]] [[Rapid transit|subway]] carriage. Air conditioning has become increasingly prevalent on [[public transport]] vehicles as a form of [[climate control]], and to ensure passenger comfort and drivers' [[occupational safety and health]].

File:Osaka Municipal Subway 10 series EMU 021.JPG|Rooftop [[Condenser (heat transfer)|condenser]] unit fitted on top of an [[Osaka Municipal Subway 10 series]] [[Rapid transit|subway]] carriage. Air conditioning has become increasingly prevalent on [[public transport]] vehicles to for the comfort and health of passengers and drivers.

File:External units of air conditioners in Singapore.jpg|Air conditioner farm in the facade of a building in Singapore

File:External units of air conditioners in Singapore.jpg|Air conditioner farm in the facade of a building in [[Singapore]]

File:20080708 Chicago City Hall Green Roof.JPG|The [[City Hall-County Building|Chicago City Hall's]] green roof

File:20080708 Chicago City Hall Green Roof.JPG|The [[City Hall-County Building|Chicago City Hall]]'s green roof

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== References ==

== References ==

* [http://www.eere.energy.gov/consumer/your_home/space_heating_cooling/index.cfm/mytopic=12420 Space heating and cooling] from the U.S. Department of Energy's Energy Efficiency and Renewable Energy

* [http://www.eere.energy.gov/consumer/your_home/space_heating_cooling/index.cfm/mytopic=12420 Space heating and cooling] from the U.S. Department of Energy's Energy Efficiency and Renewable Energy

*[http://www.eca.gov.uk UK Enhanced Capital Allowance Scheme (ECA)] {{Webarchive|url=https://web.archive.org/web/20110616155958/http://www.eca.gov.uk/ |date=2011-06-16 }}, a UK Government scheme to provide tax rebates for companies who use products which are ECA approved.

*[http://www.eca.gov.uk UK Enhanced Capital Allowance Scheme (ECA)] {{Webarchive|url=https://web.archive.org/web/20110616155958/http://www.eca.gov.uk/ |date=2011-06-16 }}, a UK Government scheme to provide tax rebates for companies who use products which are ECA approved.

*[http://www.ecbcs.org International Energy Agency - Energy Conservation In Buildings And Community Systems]

*[http://www.ecbcs.org International Energy Agency - Energy Conservation In Buildings And Community Systems] {{Webarchive|url=https://web.archive.org/web/20190405054704/http://www.ecbcs.org/ |date=2019-04-05 }}

*[http://www.cooloff.org/ AHAM website on Room-air Conditioners] {{Webarchive|url=https://web.archive.org/web/20060623054307/http://www.cooloff.org/ |date=2006-06-23 }}

*[http://www.cooloff.org/ AHAM website on Room-air Conditioners] {{Webarchive|url=https://web.archive.org/web/20060623054307/http://www.cooloff.org/ |date=2006-06-23 }}

*[http://www.aceee.org/consumerguide/topcac.htm Top-Rated Energy-Efficient Central Air Conditioners] {{Webarchive|url=https://web.archive.org/web/20060517073456/http://www.aceee.org/consumerguide/topcac.htm |date=2006-05-17 }}

*[http://www.aceee.org/consumerguide/topcac.htm Top-Rated Energy-Efficient Central Air Conditioners] {{Webarchive|url=https://web.archive.org/web/20060517073456/http://www.aceee.org/consumerguide/topcac.htm |date=2006-05-17 }}