This humidifier is the best. It has 4 levels of mist; our area is very dry, so when our humidity is at about 15% we use it on the highest setting over night and by morning it's up to about 28-30%. If we start at around 30% humidity, the lowest setting brings us up to around 40% by morning. There is a nice LED light in the water level indicator that you can turn off at night. But be aware that the plug that goes into the wall also has a bright LED that does not turn off. It's so nice to be able to just add water from the top instead of taking the tank off, wrestling with the "lid" that is wet and slimy, in order to refill it. The design of the water inlet is a nice slope that works so well you want to add water faster than it can drain it so it sloshes back out. I hope it works for a long time, it's fantastic.