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My guess is LED lights are supposed to last a lot longer. The human cost of replacing lights is probably a lot more than the cost of the bulb. Labor is expensi
by melling 8y ago
My guess is LED lights are supposed to last a lot longer. The human cost of replacing lights is probably a lot more than the cost of the bulb. Labor is expensive.
- jedberg 8y agoNot really. The rated life of sodium is 24,000 hours, and LED is 25,000. With a lot of money you can get LEDs with rated life up to 200,000 hours, but that's not typically what cities are buying.
- TylerE 8y agoAs the article states the LEDs are failing well under rated lifespan. If I use conservative estimates (10 hrs per day, "few years" = 4), then these LEDs are failing at under 15,000 hrs.
- jedberg 8y agoWhich of course only makes a stronger argument for keeping the longer lasting sodium lamps. :)
- melling 8y agowhere did you come up with 25,000? The article says the LEDs were supposed to last at least a decade, which is the length of the warranty.
- jedberg 8y agoThat's just the average rated life of an LED street lamp. But if you do that math, that's about 5.7 years at an average of 12 hours a day. So these lamps were probably rated closer to 50,000 hours. You can also get sodium lamps that last that long. It's just an average.
- melling 8y agoDo you give a warranty on the average? I doubt it. A 10 year warranty probably means the average is longer than 10 years.
- Itsdijital 8y agoMind you LED life span is usually rated to ~75% brightness instead of complete failure like other bulbs.