Our sound blankets will not completely eliminate all of the noise from your air conditioner. They are designed as a cost-effective solution as compared to moving or replacing your air conditioner. In general terms you should expect the noise level to drop by 30% to 50%. In many situation our products are used to make noisy air conditioners comply with local noise laws. Sound blankets are typically the first step air conditioner manufacturers take in reducing noise. Sound blankets only decrease the noise of the compressor, which is the noisiest part of your air conditioner. Other noise sources are the fan motor, wind noise from the fan blades and perhaps some vibration noise from the cabinet. For more information on how to reduce air conditioner noise, click here.