Quietest in large rooms. There is a phone by the name of theLG LW1216ER. This window air conditioner has a noise level of 52 decibels and is great for cooling spaces up to 550 square feet. Quietest AC Window. There is a series by the name of the Haier Serenity Series. The quietest budget AC unit. Lg LW6017R is a model.
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