How come LED Light Bulbs only last for about 2-3 Years?

I’ve bought and replaced a lot of light bulbs, and I noticed that all of them said “up to 20,000 hours” which would be about 5 years given 12 hours of daily use (which we definitely don’t).

  • BearOfaTime@lemm.ee
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    2 months ago

    I have a dozen that run 12+ hours a day. I’ve had 1 fail in 5 years.

    Don’t buy cheap LEDs, and don’t put them in enclosures that trap heat.

    • rtxn@lemmy.world
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      2 months ago

      Speaking from experience: LED drivers hate dirty power. If they burn out frequently, check the wiring for damage. I probably avoided a house fire.

      • Albbi@lemmy.ca
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        2 months ago

        Dirty power? Aww geez it’s been a few years since I last washed and waxed my power lines. Guess I gotta open up the walls again.

      • BearOfaTime@lemm.ee
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        2 months ago

        That’s a good point. LEDs dislike unstable power a LOT more than incandescent or fluorescent.

      • trolololol@lemmy.world
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        2 months ago

        As an EE graduate I want to hear more about what dirt means and what driver can be affected by it. I’d expect power electronics to stand 100% over voltage over short periods and easy 20% long term, which would blow up lots of other things on the house before the driver or the LED starts performing worse.

    • sparky1337@ttrpg.network
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      2 months ago

      Yep. When I moved into my house the previous owner had used all garbage Walmart LED’s. I think I had one fail each month and just bought a bunch on sale from Phillips eventually.

      Most common failure was the driver. So they turned into strobe lights lol. Most annoying failure ever.

      And more importantly, not every LED is dimmer compatible. Sometimes they’re super picky or just plain don’t work.

      • trolololol@lemmy.world
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        2 months ago

        Oh dang, a cheap driver is probably $0.50 cheaper than a half decent one that can take the hit.

        In Australia anything has 12 months warranty by law, this factory would bankrupt quick.

      • pseudonym@monyet.cc
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        2 months ago

        Can you recommend which ones to buy? I have the strobe light problem and it is indeed very annoying

        • sparky1337@ttrpg.network
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          2 months ago

          Generally I don’t buy anything else other than Phillips. They’re usually bulletproof if you don’t get the smart bulbs. I’ve not had a Phillips fail in ~10 years. But that’s a sample size of like 30 or so bulbs.

          • Blaster M@lemmy.world
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            2 months ago

            While I’ve had a Philips fail, it was due to environmental reasons. Otherwise, Philips bulbs have lasted me literal years for hours every day.

            I also run General Electric bulbs, and they’ve also lasted years.

        • snf@lemmy.world
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          2 months ago

          The strobe light problem might also be caused by putting a LED that’s not dimmer-compatible on a dimmer switch

  • FeelzGoodMan420@eviltoast.org
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    2 months ago

    Since people are just giving snarky douchebag replies, I’ll actually attempt to answer the question since that’s what this community is for?

    The estimate given on the packages of these bulbs are absolute best case scenario, using an optimal temperature range and pattern of use that won’t really match up with the average household because:

    1. You may go on vacation and let your house get cold or hot. This could affect the life of thr bulb

    2. The manufacturer is likely leaving the bulbs on 24/7 when measuring. Most people turn lights on and off multiple times throughout the day. This can decrease the life of thr bulb, just like with any other electronic device.

    3. Humidity in the house can change dramatically year round. Manufacturing tests probably keep a constant humidity level.

    4. If you’re buying cheap random LED bulbs off Amazon from dogshit brands (i do thid too so not knocking you), the manufacturer estimates might just straight up be a lie.

    I’m sure there are other reasons but that’s a good start.

    • trolololol@lemmy.world
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      2 months ago

      LEDs can take quite a beating. The only thing that degrades then is being on, and being hot. For all purposes unless it’s inside a restaurant kitchen or they’re on, they’re not hot.

      Other packaged electronic components follow the same rules. Except wires and solder that can oxidize without being used.

      So no, I think that’s a grift if you can’t reach 5 years. When domestic LED lighting was in infancy we’d hear all power LEDs, like for cars, should last 10 years.

      • FeelzGoodMan420@eviltoast.org
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        2 months ago

        It wouldn’t degrade from being shut off and on a bunch of times? I know like HDDs can degrade faster if they’re constantly powered off and on.

        Appreciate the feedback. I just tried to answer the question the best I could since at the time most of the replies were unhelpful and rude

        • trolololol@lemmy.world
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          2 months ago

          Mechanical things suffer a lot of stress from turning on/off. But even spinning disk storage turns off automatically if desktop is idle for a certain time, it’s a balance between switch vs continuous operation, they have overlapping kinds of wear and tear.

          Top of mind, you can expect 10k cycles from typical buttons and it’s hard to be less complex than a button. Because metal parts are subject to fatigue.

          Flash based drives would certainly fail faster or slower depending on the number of write bytes over its life.

          Then there’s erosion caused by electrons, which is my biggest suspect for the problems of last generation of Intel CPUs. You have to royally screw up to start selling something that overlooked this.

            • trolololol@lemmy.world
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              2 months ago

              Wait until you hear AMD is treating OEMs now as bad as Intel did on their most glorious moments.

              I’ll try to buy as few computers as I can until Risc-v is main stream.

  • Treczoks@lemmy.world
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    2 months ago

    They never last that long, as they easily get away with it.

    In one of the gulf states, though (Dubai?), they actually have only longer lasting LED lights for sale, as the minister responsible for regulation is something like an EE and forced the LED bulb providers to make a special version of those bulbs that basically last for ever. Those are only sold in that country, and hard to come by elsewhere.

  • hperrin@lemmy.world
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    2 months ago

    Smart bulbs like this:

    Have PCBs with small LEDs surface mounted to them. This means that the on-off cycle of the bulb causes heat deformation cycles of the PCB. This stresses the foils in the PCB and can eventually cause them to lose connection. That’s one of the reasons why they’ll often start flickering or lose the ability to be cool white, warm white, or specific colors (the different kinds of LEDs in them).

    But bulbs like this (often called smart edison bulbs):

    Use longer/larger LEDs that aren’t mounted to the PCBs, and will probably last much longer. They are better at not overheating their own electronics.

    If you want the first kind to last longer, don’t run them above ~60% brightness.

  • Blackmist@feddit.uk
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    2 months ago

    Maybe stop buying the seizure-brand ones from Amazon?

    I think I’ve had to replace one bulb in my entire house in the last 6 years or so.

  • Raiderkev@lemmy.world
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    2 months ago

    I replaced my mom’s can lights with LEDs and I was an early adopter. I believe it was ~2012-15 ish. Not a single one has died. The only reason any of them fail now is poor quality and / or planned obsolescence. The tech itself is solid AF. I had some bulbs I got from IKEA for $1. Those have failed countless times.

  • CmdrShepard@lemmy.one
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    2 months ago

    Generally because you’re buying cheaper ones that aren’t built as well. Heat destroys LEDs and the cheap bulbs generally use fewer individual LEDs running at higher power to produce a given output in lumens. More expensive bulbs use more LEDs at lower power to achieve the same light output so that they’re not constantly being overdriven and last much longer.

      • CmdrShepard@lemmy.one
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        2 months ago

        I just buy a cheap jumbo pack from Amazon. They’re like 15 bucks and last for years which is good enough for me.

      • acosmichippo@lemmy.world
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        2 months ago

        I have dozens of Philips Hue bulbs 6-10 years old and I honestly don’t think one of them has died. I’m sure they have lost some luminance over time, but they still get the job done no problem. I rarely run them at 100% anyway.

        But yeah I have also had some cheaper LED bulbs die within a few years.

        • quixotic120@lemmy.world
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          2 months ago

          Just fyi for anyone who would care about this: while hue bulbs are built well they are moving towards a model that requires you to put them on “the cloud”, even though they were sold for years and years without that requirement. The update will be mandatory whether you want it or not as part of Philips security being integrated into the app. It’s unclear what will happen if you don’t create an account and sign in at that point

          So if you’re like me and put all your iot shit on an isolated vlan without internet access they may not be the best option for you. Or if you just don’t want to support a company that wildly changes the tos years after purchasing their (expensive) product. I don’t want my home shit on the internet, I don’t trust Philips to put enough cash or effort into securing their servers, etc.

          The bulbs do work with zigbee though and that seems to be a viable alternative to using their hub/app although I haven’t tested it fully. This also means if you’re using them via HomeKit you’ll need some kind of bridge like home assistant

          • The Pantser@lemmy.world
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            2 months ago

            I added all my 10 year+ Hue bulbs to a zigbee stick about 4 years ago. I control them with Home assistant and Zigbee2mqtt. They were a bit flakey at first but after awhile now with updates they have been flawless. Best thing is you still get firmware updates through z2m. Highly recommend using Hue bulbs for their long term support and quality. I have had 1 bulb start flickering and Hue actually replaced it, free of charge.

            • quixotic120@lemmy.world
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              2 months ago

              That’s good to hear. I have a zigbee stick but haven’t found the time to repair them that way yet. I definitely agree they’re good products, it just left a real bad taste in my mouth when after years of using them I got a notification in the app that soon I’ll be required to put them online, which is nonsense

        • hperrin@lemmy.world
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          2 months ago

          I bought three of the gen 1 Philips Hue when they first came out and all three died within two years. I hope they’re better now, but I’ll never buy Philips Hue again.

          And in case you ask, they weren’t enclosed, they were in IKEA floor lamps. They were at 100% all the time, but I feel like if they can’t survive that, they shouldn’t be able to do it.

  • tfw_no_toiletpaper@lemmy.world
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    2 months ago

    Mine work for I think over 10 years now. Some of the actual LEDs inside died but you don’t really notice 1-2 of 200 inside the bulb being dark.

    • ChaoticNeutralCzech@feddit.org
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      2 months ago

      I have been dumpster-diving for LED bulbs for 5 years. None of them had 200 chips, they usually have about 5-30 packages with 1-6 diodes each for a total of around 30-60 so that they total some 90-180 V in series (I live in a 230V mains region, and the 330V rectified mains can be efficiently transformed to that voltage by an SMPS). Because they are in series, if one in the series chain fails open circuit (the most common way), the entire chain goes out. Yes, fixtures (not bulbs) with 100+ LED chips exist and if they are designed to operate at a low voltage with all chips in parallel, the failure of one will not affect the others.

      • hydroxycotton@lemmy.world
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        2 months ago

        This sounds like an interesting hobby? Care to share more about how/why you are into dumpster diving for lightbulbs?

        • ChaoticNeutralCzech@feddit.org
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          2 months ago

          I saw Big Clive and DiodeGoneWild take some apart, and we had been using halogen or fluorescent ones at home because LED bulbs were over $10 back then. I thought I would learn something about electronics but not really, the failure modes are always the same: about 50% of the time, an LED burns out. 25% of the time, it’s the smoothing inductor gone open circuit. 10% of the time, a bad contact somewhere (usually solder joints on linearly-regulated ones). 5 % work out of the box for some reason. I remain adamant about not paying for LEDs even though dumpster diving is objectively not worth the trouble anymore.

  • millifoo@lemmings.world
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    2 months ago

    Heat.

    While the actual LEDs (*) may be rated up to 20,000 hours+ in optimum circumstances, but the actual 3rd party bulb manufacturers, especially the cheapo brands, are building bulbs with poor heat dissipation designs and cheap and/or poorly designed circuits. Same goes for other parts they may use, such as the power supply. To reach 20,000+ hours, you need everything - not just the LED - to be working optimally together.

    (*) the best LED makers out there right now, e.g. Nichia, Cree, Phillips - really do some amazing engineering.

    • shalafi@lemmy.world
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      2 months ago

      I was going to being up Nichia and Cree! (I’m a flashlight junkie, can’t help it.) There’s a world of difference in quality LEDs vs. cheap units.

      I have 3x CREE floodlight-style bulbs on my terrarium, never lost one. The CRI (color rendering index) is 90+ (94?) and the colors are natural. If you contrast those with a regular LED, the results are gross.

  • plz1@lemmy.world
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    2 months ago

    I’ve had sets of LED under-cabinet lights powered on 24/7 for about 14 years. I think one bulb went bad, out of 12.

  • ShunkW@lemmy.world
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    2 months ago

    I have had the same light bulbs since 2012. One of them broke when I dropped it while moving. Otherwise, no issues at all. Philips brand that I bought a box of 12 of when I moved into an apartment that year. Maybe I’m just lucky, but still no issues.