[Letitring]

LOL on the creaking. Don't believe it for a second. :)

I went and looked and one of those a/c compressor things are right beneath my bedroom window, on that end of the house. There's a couple more on the other end of the house. Would that cause the horrendous noise?

[Myrddin]

Would that cause the horrendous noise?

The fan and compressor motors will hum like crazy if the voltage is too low to move the motor armature.