Answer: There is, from what I am led to understand, no way that all the noise of an air-conditioning compressor can be eliminated.
While many manufacturers have made their products quieter than they used to be, compressors still make noise.
It is the price we pay for comfort—along with high electric bills. The only way peace and quiet can be achieved in the summer while keeping cool rests in that house I’ve been coveting on Frenchman’s Bay in Maine.
There are items called “sound blankets,” manufactured by a few companies. Putting a blanket around a motor smells of fire hazard to me, but the manufacturers say that the compressor motor in your air conditioner is internally cooled by a refrigerant, so it will never overheat when insulated.
Apparently, the heat does increase by a “negligible” 2 percent, they say.