UV Lamp Replacement: When and Why Your Purifier Needs It
UV lamps weaken quietly long before they fail. Learn the yearly replacement rule and why a glowing lamp is not proof of safe water.
The UV stage in a purifier disinfects water with ultraviolet light. It has one quiet weakness: the lamp loses strength long before it visibly fails.
Why a Glowing Lamp Can Still Be Weak
UV lamps dim gradually with use. A lamp can keep glowing while its germicidal intensity has dropped well below what is needed to disinfect water, so the glow alone is not proof of safety.
How Often Should It Be Replaced?
The standard recommendation is to replace the UV lamp once a year, regardless of how it looks. A purifier that runs unusually long hours may need it slightly sooner.
Points to Remember
- Replace on schedule, not on visible failure
- Ask the technician to clean the quartz sleeve around the lamp, since deposits block UV light
- If the lamp indicator or alarm shows a fault, stop and get it checked
- A UV stage does not remove dissolved salts; it only handles microorganisms
During every annual service in Nellore, Aquera Solutions checks the UV stage along with the filters, so lamp replacement never gets missed.