Do Compact Fluorescent Lights lose brightness?

Question

About three months ago, I bought those energy efficient bulbs (by GE) and replaced them in my ceiling fan (and a few other lights). The first week, they were super bright, but over time they seem to be dimmer and dimmer. I'm not talking about when you first turn them on--I know they take a while to "warm up." But when I've had my lights on for any amount of time--let's say an hour after I turned them on--they are now about half as bright as they were three months ago. When we first them, they were too bright to look at (which isn't necessarily a good thing), but now I have turn on extra lights just to get adequate lighting (for when I'm working on the computer, etc). Is this normal?

Update:

I bought the comparable wattage of the CFL bulbs. What I'm talking about is CFL bulbs emit much less light three months ago than they did before.

morris · Accepted Answer

Those bulbs do lose brightness. I hate that. They claim to be "green" and last much longer than regular bulbs, and they do last and last. But they get dimmer and dimmer. I don't like them because of the dimming factor. You just want to throw them out.

elcamino man · Answer

What might have happen is you bought the same wattage as the bulbs you had in there and you thought it was as bright as the bulbs you took out. When you buy the fluorescent lights you have to buy 15 more wattage to be as bright as the old bulbs.

randy · Answer

yes they do I started to replace them with led daylight bulbs,so far so good. I also give my old bulbs to family,and friends.

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Do Compact Fluorescent Lights lose brightness?

3 Answers