How often do the lamps need to be replaced?
Germicidal UV lamps are good for approximately 10,000 hours of continuous use. Generally, lamps should be replaced at least once a year. Remember, the lamp will continue to stay lit for many years. However, the UV effectiveness needed to kill organisms diminishes after about 10,000 hours. You should not wait until the lamp goes out to replace it, as you would with a regular light bulb.
