Precise performance meets quiet comfort with the Chill Premier inverter room air conditioners from Friedrich. This 22,000 BTU unit features a Precision Inverter compressor that operates at the precise capacity needed to keep the room cool and comfortable, while operating up to 35% more efficiently than traditional window air conditioners. The Library Quiet operation runs as low as 42 dB in cooling mode and 32 dB in fan only mode so you can watch TV or have a conversation without interruption. Traditional window units dont allow the homeowner to open the windows once installed, limiting the amount of fresh air, but this unit features a flexible design that includes SimpleSill which allows the window to be opened and closed after installation. A three-step installation simplifies the process with a one-piece frame, included hardware and expandable side panels that lock the unit in place. This air conditioner also offers the flexibility to be installed either in a window or through the wall, whichever works best for your home. Choose a smart air conditioner from Friedrich and enjoy the benefits of cooling with none of the hassle.