I love this Honeywell 4 gallon humidifier because of the super water tank capacity. This humidifier helps to keep the large living room humid and you do not have to change the water multiple times per day. This is the best part. It works just as well as having multiple small tank humidifiers all over the room. Its output is strong enough to be able to leave it on the floor and still have the humid effect up high in the air close to the ceiling. It works well and is quiet enough to keep on all night and it does not disturb your sleep. It is also quiet enough to be able to still enjoy movies and television without having to turn the volume up to an unnecessary high volume setting. It is also very easy to fill up, but I would suggest bringing the water to the machine rather than carrying it when it is completely full because it can be heavy with four gallons of water inside.