Initially, I had a bit of a hard time figuring out the instructions in the manual. It did not seem to work well. I asked a question of the company, however, and "got my act together" .... It sets up easily, and works great now.
In order to not have to worry about water scale inside, I opted to use distilled water... which became expensive. Then, my Culligan Water provider informed me that I could use the water from my kitchen R/O filtered water. That ended problem, and no extra cost at all.
I run it at 35-40% humidity setting, in a good-sized open living room. That is, there's an open stairwell on one side, an open entryway at one end, AND I have 9 foot ceilings in that room. In Spite of that, I learned I needed to place the humidifier on a sturdy table, about 3' up from the carpet, and out a few feet from my one living room corner, (just to avoid steam hitting furniture near that corner). It runs very well, and I have really noticed the difference in it almost eliminating a dry winter cough that I have every winter.
Highly recommend this..... and the service/interaction with the company was wonderful.
I did take out the 3 yr warranty.