So honestly I can't say that it has changed my life, etc. There are just too many variables when it comes to allergies and mold and stuff to reasonably attribute to 1 source.But since installation I have noticed a significant decline in mold in my vents. Yeah it isn't gonna magically kill the mold already in your vents, but once I bleached and cleaned them, it may have helped prevent regrowth. It probably helped that I also fixed the AC bowl so it wouldn't dump water down my ducts...
When you look at cost vs specs you can clearly see that Calutech is a winner. This one here has a whopping 120 watts of power, which is a ton compared to most models you will see with only 30W or 10W.
Remember that this 120Watts is total power which is Joules per second and is distributed around the lighted area. Stuff that gets exposed has a very short exposure time and is only going to pick up a tiny percentage of the total power emitted due to the exposure time and how small the object is.
Its just like when you walk through a room. How much of the total light output of a light bulb in the room did you absorb? Even if you walk really close to the light, you are surely only absorbing a small percentage.
So you need a lot of output for it to kill or disable any organisms. However, the main thing I wanted it for was to keep mold from growing around the wet areas in the AC itself. For this purpose, it is fantastic! The light is always shining so mold really doesn't have a chance.
This light has filters to ensure it doesnt transmit 180nm ozone-creating UV which is good. You definitely don't want an ozone generator in your attic!
Make damned sure you don't look at the UV light when installing. 260ish nm wavelength UV can mess up your eyes and cause cataracts. It is not like the 380nm stuff that is used for currency-lights and viewing scorpions and parties.
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