Note: The listed example is color temperature 5000° K, and the higher the number, the more blue-white it looks. In a home environment the blue-white color can seem harsh, sort of like an old fluorescent light tube.
The light output of the 2700°K example under review is 800 lumens, about the same as a CFL or incandescent rated at 60 watts. Power consumption of the LED array is just 9.5 watts at 120 volts. This unit is said to be dimmable, but I have it in a conventional hooded desk lamp so that feature has not been tested.
Two things are curious about this bulb -the outer "glass" is coated in clear plastic like a shatterproof industrial shop bulb. It is sticky to the touch, and in an exposed lamp the surface might be attractive to dust. The other characteristic is that the vertical flanges seen between the metal base and the frosted glass run quite hot for a 9 watt bulb. It feels more like how hot a 60 watt bulb would get. Those flanges are designed to dissipate heat created by the LEDs as they produce light, and I have to assume it gets hot, thermally, as a normal running condition.
One other characteristic to note -the bulb is about a half-inch longer than a traditional incandescent bulb. See customer photo. It should fit in most fixtures.
I am delighted to see on the packaging that this bulb is "assembled in U.S.A." There is no country of origin on the bulb itself, but that's me being a skeptic.
The heat issue is significant, which is why I've marked it at 4-stars instead of five. With the heat concentrated near the socket, some sockets could eventually suffer damage from prolonged temperatures that were not envisioned with bulbs where most of the heat was up in the glass and away from the electrical contacts. In my application, the bulb is horizontal rather than upright (base down, glass up), and the metal shroud on my lamp may aggravate the amount of heat that can build up. But so far, in the first hour of operation, the metal shroud is COOLER than with the 40 watt halogen it replaced.
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UPDATE
I have improved the rating to 5-star after observing that the section between the metal base and the flanges is acting as a thermal insulator. The flange area gets quite warm -too hot to touch, really -but the heat does not spread to the base. So, there is less basis for concern about potential damage to the electrical socket into which this bulb is placed.
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These bulbs are excellent. We tried five different makes and they are by far the best in terms of appearance and color. However, they are considerably cheaper to buy at Home Depot: $13:95 as opposed to approx. $20 on Amazon!This obviously adds up when you are buying a lot of them..as we were...
Come on Amazon you can do better!
Julia
Best Deals for Cree 9-Watt (60W) Daylight (5000K) LED Light Bulb
For a few years now, I've been in search of that LED bulb that bridged the gap between energy efficiency and adequate brightness every other bulb I'd ever tried was either too dim, produced a colored hue of some sort, or was ill-suited for general household purposes.Not this one. Not by a long shot.
I received three of these in my mail this afternoon, installing them into a ceiling fan in my family room, replacing three standard, 60 watt non-LED light bulbs. I think just one would have sufficed, as not only is there no colored hue from this bulb, but they are considerably brighter so bright, in fact, that I cannot look directly at them unless first dimming them.
Congratulations, Cree. You've produced the first LED light bulb that I actually think a suitable replacement for standard bulbs. I just hope that the energy savings coupled with the bulb's life span make up for the considerably higher per-unit cost.
Honest reviews on Cree 9-Watt (60W) Daylight (5000K) LED Light Bulb
I bought 6 of these from my local home improvement warehouse for about $15 each. I bough the "daylight" version of the bulb for 2 new fixtures in my basement office. Prior to this I have bought a different ecosmart bulb which also performed well. The price difference between the 60W equalivant for the ecosmart and the CREE bulb is about 5 dollars. I opted to try these out figuring I could try em out and if I din't like it could return it. Well they are still in my light fixtures, and putting out a lot of quality light. at just 9 watts, an advertised life of 20 years, and no mercury in them, makes them a good deal in my book. If I knew the bulk "6-pack" was available online I would have picked up that as I could have saved a couple of dollars.Overall I like the daylight bulbs and this is a strong contender. As my CFLs fail or my incandescent bulbs blow I'll consider using these. The price of LEDs have started to drop significantly over the last 2 years or so, and I'm liking what I'm seeing so far.
Find helpful customer reviews and review ratings for Cree 9-Watt (60W) Daylight (5000K) LED Light Bulb
Love these bulbs. I've been waiting for the LED bulbs to get affordable, and CREE has the technological chops to make it right. The physical distribution of light looks just like a light bulb, the color is factory adjusted to match incandescent AND perfectly match each other for a multi-bulb fixture. Packaging is a little challenging but just peel apart the cardboard and you can pop out the blister section. The dimming is excellent -I gave up trying to dim CFLs with all their inconsistencies and unevenness and buzzing. The CREE have no perceptible buzzing and dim evenly over the whole range.One more thing -got these in a promotion (still going as of date of writing) at a local chain hardware store HD for $13.95, and the 40W-equivalent model for $9.95. Not sure how long it will last.
On one of my bulbs, the glass envelope came off while I was screwing it in. The store exchanged it no problem. It seems that the silicone diffuser skin had extended down over the lip of the glass envelope at the bottom, and when they epoxied it onto the base, the glue stuck to the silicone instead of the glass. Held for a little while and then the think silicone just tore off when I applied some force. Test yours by screwing them in right away after you buy them so you can exchange them if you have this problem.
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