I had the regular Remora in my living room and it didn't bother me. I'm sure the Pro w/ Mag 3, is louder. If it bothers you, it won't harm much to turn it off for a bit to watch a movie or what not.
I have mine on a timer. I just don't run it between 5pm - 10pm. Then it cuts back on. I have the prism and it's kind of loud. But since I bought the timer it's been very nice.