Author Topic: HVAC ultraviolet light installation  (Read 860 times)

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Offline edy

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HVAC ultraviolet light installation
« on: August 17, 2015, 01:22:25 am »
Hi folks,

I was wondering if anyone has experience with UV lights that go into the AC duct. See photo below. I received one from a friend.... It plugs in 120 V outlet and stays on all the time, supposedly killing bad stuff in the air. Would it create dangerous levels of ozone or are they generally safe?

As far as installation, from what I've seen it goes in at the main exhaust duct just above the furnace and on top of the AC coils (which in my system is installed in the large duct exiting the natural gas powered furnace). Does this seem right?

Also, do I need to have it on all the time? Wouldn't it only be useful during the summer when AC is on due to condensation of humidity on the coils? In winter the dry hot air from the furnace would probably shorten the life of the unit and bulbs anyways. What about having it connect so it only powers on when the fan is blowing? Or does it make sense to have it on a timer?

Thank you in advance for any advice you could provide in the location to install this thing and any operating tips you could provide. By the way, the other side of the unit in the photo has 2 sockets for UV bulbs that extend into the duct. I need to cut 2 holes with a template they provide, screw the unit into the duct, and duct tape around to seal it tight.
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