Do I need to replace the UVC lamp that glows after 1-year?

YES! Replacing a lamp before it really “burns out” may appear lavish but not when it comes to UVC lamps. There is a decrease in the germicidal effectiveness of UVC lamps against their burning time. Hence, the UVC lamp should be replaced according to the designated lamp life mentioned in the installation manual. For people with respiratory illness, we strongly recommend an annual UVC lamp replacement for inhaling the purest air.