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I currently have a Mr. Slim system in my converted garage. The room is 20x11 fully insulated and it has worked great for the past 3 years. I selected a system that could handle a much bigger room...

^^ The buzzing doesnt bother me at all. My concern is just that something was broken or getting ready to break and that the buzzing was the first sign of trouble.

Its a carrier unit. I'm going to try to see if i can tighten it down. The buzzing sound is not loud at all. In fact, you have to be pretty much right next to the unit to even hear it.

I want...

I just called the company that installed it and wouldnt you know, my warranty expired 2 months ago. The guy said that the buzzing is probably normal since the units tend to make noise as they get...

I called an AC repairman out after hearing a buzzing sound from my outdoor unit. I was hoping it was the contactor but he said it was actually the reversal valve. He said it would cost $1700 to...