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We've got GU24 fixtures for outside lights on our house. They came with 23W CFLs, which we found to be way too bright for our neighborhood (and because we've got 4 of them on the front of our house). In addition, our light "switches" are all UPB (Universal Powerline Bus), which means that they're actually dimmers, if we choose to use them that way. So, I was delighted to find these. I bought a couple to try out.
Just to be clear I really like them. However, when I put one in on the other side of the front door from the current 23W CFL we couldn't tell the difference. Waited a while to make sure that both had warmed up, and if we walk across the street, we could tell that the 13W (this light) was just slightly less bright than the original 23W. So, either the original lights were junk, or this one is more efficient than expected. Go figure.
As far as dimmability, these lights are pretty good. Not measuring or anything, but these can dim down to at least 40%. Maybe 30%. There's one spot at in the middle where there's some flicker, but only when the lights are cold, right after starting. (Just in case you didn't know, CFLs or any other kind of fluorescent light will start out dim in cold weather.)
Anyway, this is much better dimmability than I've ever seen on a CFL. I'm happy, and hope to see more improvements in the future.
All of the dimmable CFLs that I've read about say that performance will vary depending on the type of dimmer. My dimmer is a Powerline Control Systems WS1D standard dimmer. It *is* an electronic dimmer.
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Kind of a joke to call these dimmable. They flicker at medium setting, and they have a different color of white in low setting compared to high.Best Deals for Bulbrite CF13WW/GU24/DM 13W 120V Energy Wiser Dimmable Compact
Purchased 12 Bulbrite Dimmable Compact Flourescent Coil T3 Bulb on August 14, 2011. By September 1, 2011 one bulb already is not working. Bulbs flicker when initially turned on and remain flickering in the low dimmer setting. Would like to return the bulb under warranty but unfortunately I deleted the order form from my amazon online order, never anticipating that a bulb would malfunction after two weeks.Honest reviews on Bulbrite CF13WW/GU24/DM 13W 120V Energy Wiser Dimmable Compact
At the lowest dimmer setting, it barely dims but it certainly buzzes! Would have just got an adapter for incandescent bulb but would not fit in my setup. If I could do over, would have just replaced dimmer with a normal switch.Find helpful customer reviews and review ratings for Bulbrite CF13WW/GU24/DM 13W 120V Energy Wiser Dimmable Compact
Like the other reviews, these bulbs take a full second to turn on. There's also a very noticeable buzz that comes from the light after it has been on for a few minutes. Unfortunately, there's not a lot of choice for dimmable GU24 bulbs so I took a chance on this one after reading other reviews. Definitely not worth it.
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