@rlj I just watched that video. I don't know what's wrong with Paul's LG unit, but my Trane ductless split is whisper quiet. I only can hear the fan in "turbo" mode. It does a great job of cooling, dehumidifying and heating my basement man cave. It's the best single thing I spent money on for my system, since what good is a great system if you either have to sweat when listening to it, or accept a noisy window a/c as background noise? It's pretty efficient, too. It is cheaper to run on dehumidifier mode than my stand alone dehumidifier. I run it all summer here in hazy, hot & humid New Jersey.
I will say that the Trane replaced a Fujitsu that never worked well, was too small for my space, and died after about 6 years. I think it was never charged correctly in the first place. The lesson is, stick with an experienced installer that will do the job right and be there for service after the install.