What is the life span of an LED?
The life span of an LED is significantly longer than that of other lamp sources like incandescent, fluorescent or HID and can reach 50,000 hours or longer. An LED never really burns out; the product life span is measured by lumen depreciation (IES calculates the life of an LED based on 30% lumen depreciation). You may see claims of a 100,000-hour rating, but this is not equivalent to lamp life rating (at 30% lumen depreciation). At 100,000 hours an LED is likely still to be operational but at a lower output in lumens.