On Sep 28, 7:35*am, Andy wrote:
On Sep 27, 11:45*am, jamesgangnc wrote:





On Sep 27, 12:23*pm, Tony Hwang wrote:

Jim Elbrecht wrote:
On Mon, 26 Sep 2011 21:04:08 -0700 (PDT), Andy
*wrote:

I am looking for some recommendations.

I would like filter out cigarette smoke for a single room. Size is
about 15 ft. X 20 ft.

My research has shown that I need a unit that has both an ionizer and
a HEPA filter.

I disagree. * I've bought a few of the Alpine Air XL-15's on ebay for
$50 or so. [$150 new on ebay-- $600 from the manufacturer]

My son uses them on used cars to get rid of smoke, pet, and
god-only-knows smells. * Crank it up, leave it overnight in the car&
it is springtime fresh in the AM.

We've used them in musky rooms& *smokey rooms with good results.

The ozone plates are sometimes fragile. [I'll go a year without
replacing one-- then have to replace 3 in a month] * So if you get
one-- order a couple extra plates on ebay, too.

Jim

Hmm,
When negative ion is produced Ozone is byproduct. Good neg. ion
generator produce almost no Ozone. Ozone is bad for you.- Hide quoted text -

- Show quoted text -

It's the ozone that deals with the odors. *The extra oxygen atom is
looking for something to bond with. *It bonds with the molecule or
bacteria that is producing the odor.

Ozone is an irritant. *I would not run one in a closed bedroom while
someone is sleeping.

I found out that I need a negative ion generator.- Hide quoted text -

- Show quoted text -

Good luck seperating the hype from reaity.

The actual definition of a negative ion is any atom where the total
number of elctrons exceeds the number of protons. In other words a
negatively charged atom of any element is a negative ion.

Oxygen will form a molecule with just about any other element. Oxygen
normally exists as a pair of atoms. Because of that it sometimes has
to be coaxed a little into forming bonds with other atoms. Not much.
A single oxgen atom, pretty rare, an oxygen molecule missing
electrons, or a triple atom oxygen molecule, aka ozone, all will jump
at the chance to form a bond with something else. That's what makes
them good at dealing with odors and killing bacteria. They're pretty
much on the hunt for something to bond with.

None of them are particularly good for you in large quantities. But
the more of it you have the better it is at dealing with odors.
That's why most of the serious equipment for doing this is used by
placing it in the space, closing the door, and leaving it alone.

The "junk" you buy on the internet doesn't really generate a whole
lot.