does it leave white dust?
1039990
Not in our experience. It's a great humidifier, we've been very happy with it.
1821409
It sort of does. At weird at that sounds but yes. I removed mine shortly after applying. It's too difficult to have it perfectly clean without a single piece of dust flying in before applying.
1918793
There is no white dust.White dust happens with no fan no heat humidifiers.This is a room cooler.
2034147
I don't know. I run it continuously, but so far it has not accumulated any significant dirt/dust.
729705
No white dust with this unit. This is an evaporative humidifier where the filter soaks up the water and the fan draws air through the wet filter. The air retains some of the moisture as it passes through the filter. The minerals are left behind in the filter. The white dust is produced by ultrasonic humidifiers that use a device similar to a speaker to vaporized the water. the minerals in the water vaporize also and later settle out on everything as a coating of white dust.
1540348
No - this unit adds humidity through evaporation, so there is no white dust. I have used humidifiers for at least 6 years and have found this Essick unit to be the best one for providing multiple room humidity without modifying the whole house HVAC system.
303268
It holds a gallon and I fill it twice a week running on low at night (only), I have seen no white dust, I have no idea how much it costs to run, perhaps the Pure Guardian website could help you with that part of the question.
1351434
It does make white noise but it is not obnoxious. It works really well if i leave it off overnight i can tell in the morning.
247137
It does show a little dust, but not bad. I wipe down my cabinets every week or so and that seems to be enough to not show dust. And I live in the desert! (A lot of dust here.)
2204966
mine is clean but on my husband's, who works outside, there is some dust build up.
1885916
Yes it does butt it is not dust proof. You need to take it apart & clean it a couple times a year.
729704
Jeff, I would have to say no, because I never saw any. After reading all the other answers - I still say no, and I use water right out of the tap. The one at the apartment is city water, but one at the house is drilled well water and neither of these humidifiers leave white dust.
201205
Yes it picks up dust, sand etc. Its a great little vacuum for a great price!
1985768
I don't recall ever seeing white chalk debris on my filter. Like MC stated, if this occurred after your first run, then I would think it would depend on what's in your air. My problem is we have a doggie door and oak pollen comes in when the dog comes in and I will find little blonde colored bits on my filter.
1902808
Yes - if you have hard water. White dust will come from any ultrasonic humidifier that is used with mineral-laden ("hard") water. The dust is actually the mineral residue from the water, just like the salty coating you would see in the pan if you boiled salt water until it was dry. I have soft water and do not have a problem with white dust. The key issue with white dust is the water, not the humidifier.
896211
This is what the manufacturer says on their FAQ's about the white dust: Why is there white dust on my furniture? If water is especially hard or has a high mineral content, you may notice white dust around the unit. White dust is not a problem it is from the minerals in the water that form the dust. The humidifier evaporates the water and then the white dust is left in the unit, not sent out into the air. If bothersome, use distilled water or you can purchase one of our Decalcification Filters (FLTDC) to help with the problem. I personally do not have this issue. Here's a link to the FAQ's as well: http://www.guardiantechnologies.com/faqs/
1065233
No. It will do nothing for white dust. White dust is comes from calcium in the water. White dust is only a problem with ultrasonic humidifiers. I have Protec with evaporative type humidifiers and they do a fine job of controlling bacteria growth in the water. The purpose of this item is to control the growth of bacteria (slime) that occurs when water is in a humidifier for a long time.