References:

 

http://en.wikipedia.org/wiki/Air_handler

http://www.differencebetween.net/technology/difference-between-ahu-and-rtu/

www.trane.com

www.mcquay.com

www.carrier.com

http://highperformancehvac.com/

http://www.engineeringtoolbox.com/fans-efficiency-power-consumption-d_197.html

http://www.osti.gov/scitech/biblio/832942