"I have a small (500sf) studio apartment that gets dry when the heat goes on. I figured this "Whole House" humidifier might be overkill, but I've had it for two weeks now and haven't noticed any change -- still waking up to extremely dry air. In fact, the humidity reading on the machine has only changed a few points, from 30 to 32, even though I have the fan on high and the desired humidity up at 65 (the max level). I've read the instructions a few times so I know I'm using it correctly. Meanwhile, I have to fill it up with water every two days, and it's killing my back to lift the full container out of my tub.
So it's a lot of work to fill and takes up a lot of space and then doesn't actually make my air any more moist. If I hadn't thrown out the huge box, I'd send it back."