Humidifiers with cold air. Stylish but did not so much that I felt. The air coming out is cold and does not cover so much in a 45 m2 apartment.
After only about 1 + month it began to leak water onto the floor (ARGH!!) And the fan sound a lot.
You have to have a timer on it, start-stop! It can be run manually, but the timer is still always there and turn it off, I do not get the point!