With all the covid concerns today. I've been getting hit with calls about having UV Light source installed on the return end of my HVAC system to kill the virus/germs, whatever nasties. Sound reasonable since it is getting time to close the windows with fall coming but I'm getting pitched about getting either one bulb or two bulb system. Other then the cost is there any advantages to a 2 bulb system? I like to be an educated consumer, what questions should I be asking. Things like bulb life? Is that consumer replacable or service call?
source https://hvac-talk.com/vbb/showthread.php?2222419-UV-lights-Single-or-Double-bulbs&goto=newpost
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