| General > General Technical Chat |
| Enclosed bulb hot environment, CFL or LED better |
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| Rick Law:
I have a pair of kitchen ceiling bulbs that goes out rather frequent (~ 6months). I usually write on the bulb's edge the install date. I know the days but the hours on per day varies too much to determine actually length of on-time. The pair of bulbs is enclosed by a single enclosure. The set up is like the attached picture but it is solid glass bowl instead of wire frame. So there is no air circulation at all and it retains the heat too well. Each time I change the bulbs, I can feel the heat. Which one do you think stands up to heat better? LED or CFL? Or is it too manufacturer or brand dependent that it merely too hard to say? Thanks |
| tunk:
Maybe you could get some high wattage LED bulbs and see if you can derate them: |
| Cerebus:
I have no idea about the theoretical elevated temperature vs life performance of one versus the other. However, the LED lamp is going to pump a lot less heat into the enclosure in the first place and I suspect that will be the bigger influence. Anecdotally, every single LED lamp I have in the house is the first one put in its fixing and their life span so far is as much as seven years with no failures so far. I have an LED lamp in fitting not dissimilar to yours - fully enclosed but with a plastic versus your glass cover - it has lasted 3-4 years so far. |
| Nusa:
Buy LED bulbs that are 'Enclosed Rated'. Yes, that's a real thing marked on the outside of the box. Home Depot even has a filter for it, although I'd double-check the description/box image before buying. I went through several bulbs in my porch light before I figured this out. |
| schmitt trigger:
I believe I have mentioned this earlier; I have had a similar situation, down here the summers are long and very warm. My solution was to use a higher than required wattage lamp which is dimmable. Then with a simple dimmer set it up permanently to about 70% of full electrical power. (Measured) This way the lamp runs significantly cooler, which should help its lifetime. |
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