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Sooner_Schooner's avatar
Jan 25, 2015

The 921 LED bulb

I just replaced 10 bulbs from our light fixtures , 921 style, with LED bulbs. They look and work great so far but I was surprised that they also get very warm to the touch. Is that normal? I also replaced our aisle lights with LED lights similar to the automotive tag lights and they stay cool.
  • travelzoo wrote:
    I replaced my 921 style also and they are warm to touch but no where near very warm. My problem is the ones I bought have a little more bluish color than I like. They are bright enough just not white enough.
    While it would be more efficient to replace your "blueish" bulbs with warmer ones, one solution is to visit a theatrical supplier or large camera shop & buy a piece of color media. It is available in 100's of colors, usually 20" X 22" sheets, and is designed to be placed in front of high wattage theatrical lights; heat won't be a problem. I've used one of the frosts (Roscolux 115) inside some of my fixtures to even out the light from panel type LEDs.
  • I replaced my 921 style also and they are warm to touch but no where near very warm. My problem is the ones I bought have a little more bluish color than I like. They are bright enough just not white enough.
  • LEDs do get warm but are far cooler than the incandescent bulb that they replace.

    You don't say what and how many LEDs are used, for example, 24-5050 LEDs, so its hard to say what to expect. Also whether or not the LED bulbs contain a voltage regulator will affect the heating, especially when the converter output gets up around 14v.

    Are they as hot as the 921 incandescents?

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