Top 5 Air conditioner companies website.

Panasonic

http://www.panasonic.com/industrial/appliances-hvac-devices/

General

http://www.generalac.com/

LG

http://www.lg.com/global/products/air-conditioner/index.jsp

HAIER

http://www.haieramerica.com/

TLC

http://tlcairconditioning.com/