What is the lifespan of an LED floodlight?

Most LED floodlights are rated for 50,000 hours of operation — roughly 11 years at 12 hours of daily use before output drops to 70% of the original rating (the industry-standard L70 endpoint).

That 50,000-hour figure isn't a failure point — it's the L70 threshold, meaning the LED floodlight is still producing usable light, just at 70% of its original lumen output. Heat management is the primary variable that determines whether a floodlight reaches that rating: fixtures with die-cast aluminum housings and active heat-sink fins keep junction temperatures low enough to hit the rated lifespan, while cheaper plastic-housed units often fail well before it.

• Rated lifespan of a quality LED floodlight: 50,000 hours at L70 (70% lumen maintenance).
• Real-world years at 12 hours/day: approximately 11 years before reaching the L70 endpoint.
• Real-world years at 8 hours/day: approximately 17 years before reaching the L70 endpoint.
• Primary lifespan killer in LED floodlights: excessive junction temperature caused by inadequate heat dissipation.
• IP65-rated LED floodlights resist dust and water ingress, protecting internal components and supporting full rated lifespan in outdoor environments.