[villagetinker]

Originally Posted by Villager1181

We have been here 4 years. About 2 years ago we had same problem and Sunshine air put vibration absorbing rubber pads under it. It was ok until about 2 months ago. We were there when Sunshine checked it this week. He said it is just loud now but not defective. It affects our 3 bedrooms. Wakes us up when it comes on. We are worried about guests in those rooms and we hear it in the master bedroom. We are researching fences. It is not the neighbors fault. The houses are just too close together. The neighbor is sympathetic but money conscious when it comes to remedies. Our question is whether the fences actually work. We will spend what it takes to correct this.

Villager1181,
Try Googling "ac condenser noise reduction", it looked like there were several possible solutions.
Hope this helps.