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Posted by Joseph Meehan on August 13, 2006, 10:10 am
Ron Cliborn wrote:
> I've been using an extra air filter in my central Heating/AC system.
> Just inside the air return I mounted a 3 piece filter.
> Piece: Desc Air Flows from 3 to 1
> 1: Hard plastic Mesh with 1" squares.
> 2: Thin Black Activated Charcoal filter.
> 3: Green fiberglass filter.
>
> I don't know how you tell a filter is working or not. However after a
> few months, I can see a large amount of "gunk" on the filter.
>
> I was thinking of buying a IONIC BREEZE type filter. I found a small
> one at Wal- Mart. It plugs in like a night light and has a night
> light on it. After a few weeks of running this I get very little
> "Gunk" on the metal bars. I don't know if this is an indication of
> how a larger unit would work but this seems pretty worthless.
>
> I've heard of "electrostatic" type filters that you put in your
> returning air space. It doesn't plug in. The moving air is suppose
> to generate a static field.
> I also remember being at a friends home when I was younger and they
> had an air filter (just inside the air return) that would !POP! like a
> bug zapper.
>
>
>
> In addition to the 3 Piece Filter I have in the air return, I also use
> a pleated type filter in the , uh....normal place you would put a
> filter in your Heating/AC unit.. This may be over kill, but I doubt
> it.
>
> Oh yeah, I also have 2 Wal-Mart upright HEPA air filters. Holmes
> brand. They have a switch to make ions to help clean the air. I
> don't know how well it works, but when I change the filters and clean
> the unit, I get out a lot of dust. Of course, I get the same when I
> blow out my computer with an air hose. Also, on both of the Holmes
> units, the lights that tell you when the "IONIC" function is on, and
> the lights telling you to change the filter are all non-working. They
> all quit working early in the units life.
>
> So far, the "3 piece system" I am using seems to be the best.
> However, I would like to hear comments from the very knowledgeable
> people in this group. Any advice, suggestions comments?
>
> Thanks Everyone
> RON in
A couple of comments:
1. You may be putting too much restriction on the air flow with what you
are doing. That can reduce the efficiency of the system and even damage it.
2. Those electronic type filters are a totally different type of animal.
They are good at trapping very small particles that conventional filters are
bad at. The ones designed to work with a HVAC system have a conventional
filter in the stream before the electronic system. The stand alone ones
(like the small one you tested) have two drawbacks; they move very little
air so they are very slow at doing any cleaning and they create ozone.
I love the commercials that tell you about "OzoneGard." which is O³, to
oxygen which while normally is O² can also exist as O³. Ozone is a form of
oxygen. The commercials are full of exaggerations and lies.
Now as to the question. What do you hope to accomplish with the
filters? Please don't say clean air. Please be more specific.
--
Joseph Meehan
Dia duit
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