Question: which ac is the quietest?
Answer: Quietest For Large Rooms. LG LW1216ER. This 12000 BTU window air conditioner offers low noise levels of 52 dBa and is excellent for cooling spaces up to 550 sq. ... 
Quietest Window AC. Haier Serenity Series ESAQ406T. ... 
Quietest Budget AC Unit. LG LW6017R.