Independent testing for the naysayers
Having previously owned a different UV Duct lamp in my last house, I know that typically these lamps all produce at least some Ozone. My last unit in particular made quite a bit as the smell of O3 was noticeable every time the AC kicked on. I decided to purchase an O3 meter before installing this particular UV lamp. To test I placed the lamp with one bulb connected in an open box (you need O2 to be circulating in order for O3 to be produced by the UV light). I left the meter running for 10 minutes and as you can see the ozone levels never went passed .02ppm (which I think is just the ambient ozone level, as it remained the same for 10 mins after removing from the box). Be warned that you may not have the same results if you buy replacement bulbs with a different part number. These bulbs are made of doped quartz which blocks the wavelength of light needed to make ozone. If you replace with non-doped bulbs, you WILL make ozone. Lastly pay attention when changing bulbs, do not just pull or slide the bulb from the base. You must press the black elector button on the base to release the bulb. Likewise when installing it you slide it into the socket HORIZONTALLY not vertically (see the last pic, red is slide direction, blue is the eject button).<br />Final thoughts: this lamp presents the best value for the money on Amazon and seems way better constructed than the 99.00 model I had previously. Will update on longevity when the first change of bulbs happens.
Rating: 5 stars