How Long Does a UV Ballast Last? What You Need to Know.

UV lamps generally last between 9,000 and 12,000 hours, depending on the brand. Typically, you’ll need to replace the germicidal lamp annually because its UV output weakens over time, which can impact its effectiveness. But what about UV ballasts? How often should you replace them?

In contrast to UV lamps, UV ballasts have a much longer lifespan. Mid-range ballasts usually last between 3 to 5 years, provided they are correctly matched with the UV lamps they are paired with. High-end ballasts can last from 5 to 10 years.