Talk of The Villages Florida - View Single Post - Ultraviolet light recommendation from HVAC tune up?
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Old 06-17-2025, 04:50 AM
retiredguy123 retiredguy123 is online now
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Originally Posted by gmacw View Post
These 100% work! Although it depends on mold type as well as where installed. I did HVAC for many years and these became very popular during COVID. I have two installed in my heat pump system at home in MA. Please note, Although the UV lamp will bill certain types of bacteria and mold, it can only kill via line of site. Meaning anywhere the UV light does shine on, ie. where there’s a shadow when light is on, or other side of evaporator coil. My daughter gets symptoms for allergies every year, since I installed the UV lamp, they are Minimal at best.
If there is slight mold, another option is spraying coil cleaner (not bleach) onto the coils then rinse with water. This is a much less expensive option but does not kill any bacteria floating thru the air as it passes thru coil.
Even if the light kills some mold on the coils, the salespeople for these lights claim that it purifies the air as it flows through the air handler, and provides better air for the entire house. In my opinion, this claim is totally bogus. The system is definitely not worth spending thousands of dollars for, especially if you expect one light bulb to treat the air in your entire house.