We have had this for a few days and are strongly considering selling it. It is just too loud! I measure it at 68 db at the rear, about half way up, and it runs at this volume for hours. There's a low hum, and some high frequencies in there too. Our house is very quiet in the morning, so this noise can clearly be heard from the bedroom, to the point of waking me up.

This is actually our second unit: they replaced the first one for the same reason, but they both measured exactly the same volume of noise.

I haven't heard any sudden noises, this is just a continuous hum, so I think its the compressor. I have no idea why GE thinks this is an acceptable level of noise from a modern appliance.