Tony Hwang wrote in
:

RBM wrote:
"Nate Nagel" wrote in message
...
RBM wrote:
"Steve" wrote in message
.. .
I have had one for 4 years and it works. It is installed above the
coil and it is on all the time.
Steve

"RBM" wrote in message
...
A customer of mine inquired about a UV filter to install in or on
a central AC air handler to kill mold growing inside the cabinet
and duct. Is anyone familiar with these, that can give me any
detail on how and when they are used and work.

tia, Roy

What is it's intended function? Is it designed to kill mold, or is
it an air purification system? Do you have the name and model of
the unit?
It kills stuff. It does not filter out any dust, pollen, dead
bacteria carcasses, etc. so is usually used upstream of a filter.

nate


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replace "roosters" with "cox" to reply.
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OK, it kills stuff. In this case it's supposed to kill mold. My
assumption is that this was recommended by the AC company to kill the
mold in the blower system, and I don't understand how it would kill
mold in the duct work that isn't near the UV light. Again, I'm
assuming that if there is mold in the air handler cabinet, there
would also be mold elsewhere in the duct


Hmmm,
Mold causing bacteria is air borne. Actually most germs are.

Mold is not bacteria. But yes, I think it would be best to have the UV
light before the filter, and possibly illuminating the filter to kill
things before they go THROUGH the filter. Again, UV is very bad for your
eyes. Make sure you have thick glass between your eyes and the light
when it is on. Also, the bluish light you can see is not the UV.

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Best regards
Han
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