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Does air travelling via a simple fan through an electrostatic filter (like Filtrete) get ionized?
Just to clarify a prior question, I had; I’ve heard that ionized air can be potentially harmful (i.e. free radicals) so I want to avoid air cleaners that ionize air. The 3M Filtrete electrostatic polyolefin-based filters (very common in furnace filters, and now as part of a standalone air purifier) are pre-charged with a static charge to attract dirt, dust, and particles of inflowing air.
My question is, as non-ionized (regular) air travels through the filter (via a simple fan, there is no ionizer involved) is there any way that it could pick up any of the charge on the electrostatic filter, or that the air can become somewhat ionized in any way or form after it leaves the filter? Now, AFAIK, air doesn’t conduct charges well, so my guess would be no, but I’d like to have an expert opinion.
No, this isn’t possible. The static charge is basically “fixed”. If it were possible, it would discharge pretty quickly in the bag, well before you purchased and installed it.
Ceramic Pre-Filter Weekly Maintenance

Honeywell 38002 Enviracare Universal Replacement Pre-Filter

For use with all Honeywell Enviracaire Quiet Care Air Purifiers / Just cut to size!…

Trap all those bitter oils and sediment in a filter before it can have a negative impact on your pot of coffee. When the brewing is over, simply toss the grounds and filter away….

Whirlpool 8171434K Large Air Purifier Carbon Pre-Filters, 4-Pack

4-PACK Qty, Activated Carbon pre-filter, Fits Whirlpool AP35030, AP45030, & AP51030 air purifiers….

Austin Air Permafilt Replacement Pre-Filter – AR002B (Black)

PERMAFILT Pre-Filter is designed to last for years. Once installed, this Pre-Filter can be easily maintained by occasional vacuuming from outside the perforated steel housing of the Austin Air unit. This procedure keeps the Permafilt Pre-Filter clean and increases the life expectancy up to 2 or 3 years, eliminating costly quarterly filter changes. Fits Austin Air Standard size models….

Foam pre filter For use with model No. 903-04-62 cartridge filter Brand #: Shop-Vac 903-49-00 UPC: 026282903495 Keywords: pre filter cartridge filt foam shop vac prefilter

Carbon pre filter The universal carbon pre-filter helps capture large airborne particles before passing through the HEPA filter, therefore maximizing the HEPA filter life The activated carbon pre-filter also helps reduce common household odors Should be replaced every 1 to 3 months of use Can be cut to make 1 to 2 pre-filters, depending on air purifier model Fits virtually all Honeywell round, QuietCare and SilentComfort series model air purifiers Replaces pre-filter model No. 32002, 33002, 34002, and 35002 Brand #: Kaz Home Environment 38002 UPC: 090271380024 Keywords: filter hepa replacement

The Honeywell Universal Carbon Pre-filter helps capture large airborne particles before passing through the HEPA filter, therefore maximizing the HEPA filter life. The activated carbon pre-filter also helps reduce common household odors.

Filter cartridge Replaceable paint spray/pesticide pre-filter for 3M dual cartridge respirator Use with model No. 52P71, R5211, R6211, R6311, and R7512 respirators 10 filters per box Brand #: 3M 5P71-6 UPC: 051131973299 Keywords: respirator pre filter paint

Replacement filter for the existing pre-filter that comes with the DEP400EW 40 pint dehumidifier. Rest easy knowing that your EdgeStar dehumidifier is able to provide both efficient moisture removal and clean incoming air.

Filter cartridge Replaceable organic vapor cartridge with pre-filter for use with model No. R5211, R6211, R6311, and R7512 respirators Brand #: 3M R6022 UPC: 051138542702 Keywords: respirator cartridge paint

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