LEDs are Longer Lasting Lights
The life of an LED is not measured the same way as the lifetime of the family pet or even a halogen bulb. LEDs are spoken about in terms of ‘L70’ or when an LED reaches 70 per cent of its original light output. The L70 mark is the first point when a human eye can notice a visible difference. If an LED produced 100 lumens per watt when manufactured, it would have reached the end of its ‘lifetime’ when it is producing 70 lumens per watt.
The best linear fluorescent lamps last around 30000 hours, CFLs last 8000 to 10000 hours and incandescent lamps last only 1000 hours until they completely conk out. Good quality, white LED lights have an expected useful lifetime of up to 50000 hours1.
Unlike the fluorescent flicker, an LED is respectable in the later stages of its life and simply decreases its brightness slowly. So when you read that an LED has a life of 50000 hours, it really means that the LED will take a whopping 50000 hours to even reach the L70 point.
A longer lifetime has several benefits, including:
- Lower maintenance costs
- Lower replacement costs
- Convenience (not getting the ladder out several times a year)
- Reduced need for replacement lights on hand
- Reduced impact on the environment due to smaller light production numbers, and
- Less lights going into waste disposal processes.
Just think, if you installed an LED in your new born baby’s room when you bring him or her home from the hospital. Years down the track they will still be studying under it when they are in high school…now that’s longevity.
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