With the warm weather approaching I'm planning on buying a new A/C unit for
my bedroom. The last one I had wasn't that old, but it was loud as hell. My
room is about 10x12, so I don't need anything that will freeze a dining hall
(about 5,000 - 6,000 BTUs).

Do any air conditioners have a quiet or whisper mode (my air purifier has
this and it's great)?

Thanks.