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If you have recently begun using a high-rated air purifier, you may have noticed something rather curious. White powder on the floor right next to the device. “What is the white powder on the floor by my purifier” you may ask. We are here with answers.
No, white dust is actually a byproduct of certain types of air purifiers. As a matter of fact, the presence of white powder on the floor next to the air purifier can be an indication that it is actually working properly. Not hearing any strange, loud sounds from the best quiet air purifier is another sign that your device is operating properly.
For more guides on air purifiers, check out how does an electromagnetic air purifier work, how to clean air purifier electrostatic, and how to clean and reuse an air purifier filter.
The presence of white powder on the floor next to the air purifier can be an indication that it is actually working properly.
Most air purifiers, like the Advanced Pure Newport 9000, do not create a white powder or white dust as they operate. Only electrostatic air purifiers tend to create a white powder that can accumulate next to the purifier itself. In other words, HEPA air purifiers, activated carbon air purifiers, ionizers, and ozone generators will not make any white powder during use.
Being as how electrostatic air filters tend to create a fair amount of white powder during use, the best thing you can do is simply clean it up. Wipe it away with a damp microfiber cloth. It should take the filter weeks to accumulate a noticeable amount of white powder, so you should only have to clean it up every few weeks or so.
Also, the white powder may show that you have used your purifier for long periods. This is why you should also keep in mind what the energy usage of an air purifier is. The last thing you want is high power bills.
If you are using an electrostatic air filter, you can expect some benefits that may make suffering through a bit of white powder worth it.
Only electrostatic air purifiers tend to create a white powder that can accumulate next to the purifier itself.
Unlike HEPA filters, electrostatic filters can be washed with gently running water and a microfiber cloth. This means that you won’t have to constantly be shopping for replacement filters, which will save you a good bit of money in the long run. HEPA filters, on the other hand, must be disposed of and replaced every six months to one year. Electrostatic filters should be cleaned once every month.
Electrostatic filters do a decent job when it comes to capturing common household allergens, including mold spores, pet dander, dust, and more. The efficiency rating in this regard may not be quite at the level of a HEPA filter, but electrostatic filters should still eliminate around 90 percent of airborne allergens. If you are worried about VOC particles then you can check out what a VOC air purifier is and if it can work for you.
HEPA air purifiers, activated carbon air purifiers, ionizers, and ozone generators will not make any white powder during use.
What is the white stuff floating in the air?
If you see something that resembles a white powder floating in the air, it is likely caused by an ultrasonic humidifier. It is just particles of water and of no cause for concern.
Do warm mist humidifiers leave white dust?
No. Most kinds of humidifiers and air purifiers do not leave white dust. Only electrostatic air purifiers have a propensity toward white dust and the same can be said for ultrasonic humidifiers.
Will an air purifier reduce dust in my home?
It can reduce airborne dust, but may not do anything about surface-level dust. As a matter of fact, some air purifiers simply weigh down dust, so you will find more surface dust after use.
STAT: A true HEPA filter is rated to capture particles at 0.3 microns in size with 99.97% efficiency, although it can capture both much larger and smaller particles as well. (source)