[sampo]

What do you think about air washers? In addition to air filters, they blow air over wet surfaces to both clean and humidify the air.

Here is one from Phillips: https://www.youtube.com/watch?v=n3xC3qxVphw

[bipson]

I have one of those.

It does not "wash" the air. It has a HEPA-filter on the intake side before the humidifying cycle. So it is basically the same thing as all other examples on this comment page.

You can actually run it without water (which we do), then it does only filtration.

Don't buy this particular product. It is overprized and has dramatic production quality issues (we sent two back, amazon reviews indicate larger issues).