My publisher at Master Handyman Press worked with Sanit-Air to test another UV system. Not all UV lights are created equal. Some create ozone. Some do not. Ozone is an unstable O3 molecule.
Many people consider ozone a side benefit because it zaps contaminants in the air.
Ultraviolet lamps lose their effectiveness after a year. This February, UV technology received a big boost when Honeywell introduced UV lights as part of its new Enviracaire Elite Whole-House Air Quality System. Honeywell uses different designs of UV lights to kill airborne bacteria in the return-air duct and to stop mold growth above the central air conditioner cooling coil. If you want to improve your home's air quality, there may be a UV light at the end of the tunnel.