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A 100 out of 100 success rate after 8 years.
Cree is now no more; the bulbs are just a brand for FEIT who imports the same unreliable Chinese white-label bulbs.
I had a bulb go bad once (out of almost 50 bulbs), but I called their support number and they shipped me a new one for free without any hassle.
If only that were true. Osram is a well-renowned brand so you'd think their - rather pricey - 'high-wattage' (10W) bulbs meant for outside lights here on the farm would last longer than about a year, all in different armatures, all with plenty of cooling (they're mainly used in autumn/winter/spring when it tends to be rather chilly here in Sweden). You'd think cheap bulbs go bad quickly but the cheap 'Biltema' brand bulbs I bought for some rooms just keep on going without marked loss of output.
All in all the average life time of a LED bulb seems to be around 2-3 years before it either has dimmed so much that it is no longer usable or it has failed outright. There are exceptions like the mentioned cheap bulbs which are still going strong after about 9 years of close to daily use or those Osram bulbs which fail in about a year or less or the (not mentioned) 'fluorescent tube replacement fixtures' which last less than a year before one of the 4 LED segment strips fails due to a failed LED. I repair these by replacing the failed chip, they work for a few months and then the things fail again.
I've used 'efficient' lighting since I bought my first house starting with jam-jar like Philips SL 'bulbs' (compact fluorescent tubes with all the related gizmos packaged in a single replaceable unit) for which I made fixtures out of birch plywood wood, 90° PVC drain pipe bends and E27 sockets because those things were heavy at about 500 grams. None of those SL bulbs had failed when I moved out 6 years later, I still have some somewhere in storage. Later I moved to the lighter PLC version which also tended to last a long time, some of them are still in use here. Then came LED bulbs which were supposed to last for tens of thousands of hours... and I suddenly started to have to think about replacing failed bulbs again.
Pay attention to the European efficiency rating for LEDs. Anything above B is practically "Dubai LED" class. The common Osram isn't doing good in this category, their LEDs I have seen in retail are rated like E-F.
To reiterate: the article fell short on the point of LED efficiency. LEDs are semiconductors, do you know when the CPU is at peak efficiency? Before it hits the exponential voltage/frequency curve. Low voltage -> cooler LEDs -> more efficient light conversion -> easier to cool -> tens of thousands hours of practical lifespan.
What does it cost? Like less than a dollar in BOM. What does it cost us? Billions in replaced LEDs worldwide and megatonnes of electric waste, because it is not made to last for "objective reasons": lower price tag in storeshelves aka capitalism and oblivious consumers.
After failure I like to do a postmortem teardown, it has never been the LED proper, usually it is the capacitor in a capacitance power supply, otherwise the controller IC.
The cheap China stuff tend to fail in a few months, while I've only had two Hue bulbs in my collection fail ever, so Philips seems to be doing something right.
None of the other bulbs in my house are really on long enough to say much about failures... like I've got dozens of recessed LEDs without any failures over 5 years, but I doubt any of them are over 1-2k hours.
I used to have a lamp that I kept replacing bulbs for "all the time". I didn't understand why since the light bulbs claimed to last for years and years. One day I read the light bulb package more closely, and it said something along the lines of, "7 years life span at 2 hours per day" in small text (the numbers may be wrong, going by memory). Doing the math, the number of active hours claimed on the box turned out to be roughly true. I don't know if LED bulb packages play similar tricks but it's worth checking out.
I switched to all LED lighting many years ago. I've had a few that lasted less than a year, but by and large I'd say that nearly all the lights I've had have lasted at least on the order of years.
There was some sort of deal between Walmart and Puget Sound Energy that applied an instant rebate automatically so that they simply rang up on checkout for $0.17.
They are all still working fine.
Plural of anecdote isn’t data and all that but I think the several hundred quantity adds some weight. Also about 90 of those are in outdoor lamps so there’s a good amount dealing with weather and we’ve not had to replace any of those yet.
Similarly, you can’t install recessed cans into a ceiling that is insulated without them being IC rated or they will die an early death.
Spend a few dollars more per lamps for quality ones. Philips makes decent LED lamps, I’m fond of their 2200-2700K dimmable lamps that lower the color temp as they dim. Philips makes an E12 base BA11 shape (candelabra) lamp that should fit your needs.
I buy Keystone lamps LED T8 lamps almost exclusively, but those are pretty uncommon in homes.
Commercial LED fixtures are rated for 50,000 hours typically but they have a separate LED driver and massive heatsinks to provide that sort of lifespan.
In doing so, the article perhaps obscures the point that business collusion, I expect, is more often built around legitimate reasoning taken to illegitimate extents and conclusions, than around outright fabrications.
It probably also doesn't help that this would require industry-wide cooperation between companies which would much rather sell their own light fixture + LED combo which people have to replace regularly than a light fixture which people buy once and keep for life.
I notice most BR30/40 bulbs start to flicker after about a year in my fixtures. It's not a happy environment for an electrolytic capacitor. In the summer I guarantee we are out of the operational range of what is in those bulbs.
Individual drivers per fixture allow flexibility with regards to commercial lighting control. The 0-10V dimming signal is sent to the driver, and if you have multiple fixtures per driver, they will all dim together. This behavior can be accomplished with individual LED drivers by wiring the dimming signal in parallel to each driver from the dimming module.
Line voltage circuits can handle a lot of fixtures, particularly at 230V or 277V. A 277V 20A circuit can continuously power 554 8w recessed cans or 138 32w 2x4s on a single pair of #12/2.5mm^2 wire. Two of those circuits can power all of the lights in a 20,000 square foot office.
Technology Connections: Longer-lasting light bulbs: it was complicated
https://www.youtube.com/watch?v=zb7Bs98KmnY
I'm in Switzerland where we can no longer buy halogen bulbs. Every bulb in our apartment is led except 7 bulbs under the cabinets in our kitchen. I used to buy bulbs from a hardware store but they would only last about a year. When they banned halogen bulbs I found that I could buy them from a photography supplier for more money. The product number was different but it had the right specs. They've been going for three years and no burn outs.
My LED lightbulbs change temperature based on the time of day and are dull red at night so you both don't wake up and you don't stub your toe. Show me a non-LED that can do that.
I've heard a theory that it has to do with genetics and lower eye sensitivity.
Many of use simply don't find LED lights, no matter the color they try to simulate, enjoyable.
I find my LED lights, including fancy decorative ones, bearable only because I always use one real, old-school, warm white (more like yellow really), incandescent (hence non-LED) light in my living room. And, yup, if you know what you're looking for, it's totally possible to still buy incandescent lightbulbs.
LED lights, no matter the shade/color always give such a fake / non-cosy feeling to just about everything.
I'm taking an actual candle + an incandescent lightbulb's warmth feeling any day over anything LED.
Now as I'm also conscious about saving the planet, I'll mix those with mostly LED lights. But having one incandescent lightbulb (and/or one candle) really creates, to many of us, a better atmosphere than pure LED lighting.
It's the old "you're eyes cannot detect more than 24 fps" all over again: "you cannot detect the flickering of a LED light". Except I can instantly tell if it's the cold (no matter how "warm white" the box says it is) light of a LED or the actual warm light of a proper incandescent lightbulb.
If you strongly prefer incandescent that's fine but it doesn't take the 5-7 years the author suggests to recoup your investment. It might, or it might not. Where your curve lands depends, but they do in fact use a lot less energy.
Here's a review I found of several bulbs for CRI, flicker, dimming performance, and spectral characteristics [1].
[1] https://www.thesmarthomehookup.com/25-soft-white-led-light-b...
All of these are individually solved problems, you just can't buy a bulb that's an e26 retrofit that satisfies all of them for whatever reason. If LED bulbs actually lasted 10 years, then there'd be 10 year warranties. Yet even the most expensive boutique LEDs (e.g. from YujiLED) are only 3 years at best.
also, I enjoyed the last lines of the article:
Also, to preempt the orange site, I'm not saying that planned obsolescence doesn't exist.