Re: Re:Re: Can the experts here help me

[Guest guest]

Barb E.

I'm not but thought I'd jump in anyway.

Yes and no. They have passive electrostatic properties in that there

is an electrostatic charge built up by the movement of air through

the material that strains the particles from the air. But they do not

have a high voltage grid that removes the particles by " plating " them

onto the grid.

Carl Grimes

Healthy Habitats LLC

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> Are 3M Filtrete Filters, electrostatic filters?

>

> Barb E.

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[Guest guest]

Rhonda,

They weren't electro-magnetic but I know what you mean. They had

layers of different plastic material that took on a static charge

when air moved through them. Because particles would stick to the

fibers from static electricity they would stop particles smaller than

the holes. The idea was to increase effectiveness without reducing

airflow like the HEPA does.

For several years they were better than anything else. But once 3M

sold the Filtrete they fell out of favor - and for good reason. The

initial cost was $90-$200. Even after Harvey started promoting

them for $45 they were still more expensive initially than a $15

Filtrete.

Also, think about static electricity. You don't have static

electricity in wet or humid weather. So while these filters tested

well in the dry lab or in Colorado or Arizona, they didn't do so well

in humid climates, like where you live.

Carl Grimes

Healthy Habitats LLC

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> Is that the same as electromagnetic filters? I had one of those and

> it was a pain b/c you have to wash it and then I left out for a couple

> days to dry and put the cheap filter in while drying. That was a

> couple years back when I didn't know my hvac etc. was contaminated

> with mold. Just it being wet and spores getting on it probably grew

> mold before drying. Suppose to had been a lifetime filter. I now use

> the merve 11 filter.

>

> Rhonda

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> > > Barb E. > > I'm not but thought I'd jump in anyway. >

> > Yes and no. They have passive electrostatic properties in that there

> > is an electrostatic charge built up by the movement of air through >

> the material that strains the particles from the air. But they do not

> > have a high voltage grid that removes the particles by " plating "

> them > onto the grid. > > Carl Grimes > Healthy Habitats LLC > ----- >

> > , > > > > Are 3M Filtrete Filters, electrostatic filters? > > >

> > Barb E. > > >

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