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What is going on with ceiling fans

316 points · 271 comments · colinprince

  1. donatj · · focus · HN ↗
    My wife and I were out recently looking at ceiling fans to replace the one in our dining room, which has committed no crimes, other than having the appearance of being very much from the 1980s.

    I was taken aback by how few of the fans had replaceable lightbulbs! In the entire store there were maybe three or four options with a replaceable bulb!

    Call me crazy, but a nonreplaceable LED is a complete dealbreaker. I go through so many LED bulbs! I don't know if my electricity is like particularly bad or if that's just normal? The first LED bulb I ever bought (Shout out EarthLED) in 2008 for like $30 is still going strong, but every bulb I buy these days lasts like two years tops.

    Anyway, we did not buy a fan.

    1. 15155 · · focus · HN ↗
      110VAC "LED bulbs" are not the same thing as the LEDs on a PCB in a DC motor ceiling fan.

      "LED bulbs" die because they have to rectify 110VAC (hot) into LEDs (hot) into an enclosure that was designed for incandescents.

      In a proper enclosure, with cooling (it's a fan), they will actually live their fully-stated lifetime - assuming the fan's upstream power supply makes it.

      1. ajsnigrutin · · focus · HN ↗
        > In a proper enclosure, with cooling (it's a fan), they will actually live their fully-stated lifetime - assuming the fan's upstream power supply makes it.

        But in an "old school" hardware, you'd then replace the bulb and get a new "lifetime" out of it, here you have to throw everything away.

        An AC motor has basically nothing inside that can fail (maybe the capactitor, but that can be replaced), and can work for a hundred years and more if properly maintained (mostly cleaned).

        On average ~6 hours per day (living room with night owls living there), is ~2000 hours per year... 5 years at 10.000hours expected lifetime for the leds, 10 if the stated lifetime is 20k hours... that's not really that long.

        1. 15155 · · focus · HN ↗
          > An AC motor has basically nothing inside that can fail

          Let me know how the non-replaceable sealed bearing packs in these AC or DC fans fare after 10,000 hours.

          In a proper/high-end DC fan, the bearings are failing before any motors or LEDs.

          Regardless, in a Big Ass Fans Haiku, the downlight is a completely separate/replaceable module - and it isn't going to fail before the bearings or motor.

          Edison screw LED bulbs are the inferior design by every objective measure.

          1. simoncion · · focus · HN ↗
            > Let me know how the non-replaceable sealed bearing packs in these AC or DC fans fare after 10,000 hours.

            ...your AC-powered ceiling fans are failing (or even "just" substantially degrading) after a little under fourteen months? What garbage are you buying?

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