This past January I had a mini split heat pump system installed in my home. I went with 2 outdoor units. One is a single 12k and a multi at 36k with three 12k indoor units . I am generally happy with the equipment but the 36K outdoor unit is quite noisy and has drawn my neighbors complaint. Here is a link to a video. If you could tell me if this is considered noisy for a Mr. Slim I'd appreciate it. The temp. was only -2C at the time. I did measure it with a db meter at 85db. For comparison, standing next to my truck I read 75db.
One of the reasons for choosing a Mr. Slim installation was for the db specs. in their literature.