Bests & Worsts Reviews from Amazon

What I like about this humidifier is its large water capacity and two water tanks that are used one at a time. Given its weight and size, it's nice that it has wheels. I never had any white sediment on furniture with this unit. Now what I consider design blunders. These large water tanks are filled from the bottom. You flip one upside down and hold it while you fill it with water. It is not flat, so you cannot simply rest it in the bottom of a sink or bath tub. The two tanks and the motor housing are just sitting freely atop the base. There are no notches or latches to keep them in place. They are prone to shifting due to vibration, and often they begin to vibrate and rattle, producing annoying noise. This can be remedied by re-positioning the above mentioned pieces, and the noise goes a way for some time... only to start again later. Update: the noise was so annoying that I had to investigate. I quickly realized that it was coming from under the top plate, where the knobs are. I tried to pry it open, to no avail. As it turned out, there is no easy access, so I had to take apart the entire assembly (see photos). Under the top plate is a neat metal box with wires connected, everything rather neatly held together, except the two wires with plastic cap connectors just dangling there -- the source of annoying rattle. I simply tied them to the metal box with a few turns of electrical tape and reassembled the parts. Took me about 30 minutes. The noise is gone. But for what I had to do, the amount of effort is disproportionately large. And it just baffles me why the manufacturer neglected such an obvious flaw. On the subject of quality control: one of the screws inside was missing. Update #2 after 12 months of use. I ended up breaking the right water tank while filling it up in the bath tub. It did not take much to break it. Rather heavy when full, it slipped from my grip while I was twisting the cap on with another hand. It tipped and cracked. Replacement cost is rather outrageous at 39.99 + 8.99 shipping. It feels like throwing good money after bad. I'm on the fence about it. Meanwhile, downgrading to two stars.