Air conditioning compressors are notoriously noisy, a fact that we ignore because the cool are is so welcome. In this video, Matt Risinger, master builder uses an Extech Sound Meter right next to a Mitsubishi VRF City Multi unit just installed outdoors. Ambient noise in the area where the compressor is situated measures at approximately 40. The compressor unit measures approximately 50 to 52 and Risinger's voice measures at 60 to 65 and, no, he's not yelling.Risinger takes us to the home's interior where two air conditioning units are installed," one on each floor of the home. Spend a minute of time and listed to what you don't hear from this compressor in the video. It's impressive.