I live on the top floor of a 5-story condo unit. My AC unit (3.5 ton unit) is located on the roof, directly above my kitchen and dining room area. I get a very noticebale vibration coming from the ceiling area when the AC compressor is on.
I went onto the roof, just to check out how things are set up. The AC unit is resting on two 4x4 pieces of wood. Between the unit and the wood are 4 three-inch by three-inch pieces of rubber ("iso pads").
Is there anything I do to lower the amount of vibration.
My initial thoughts were to have the ac unit placed on cement blocks and on bigger isolation pads.
Can you reccomend a good isolation pad source?
Thanks for any help.