Questions and Answers for Cree 100W Equivalent Soft White (2700K) A21 Dimmable LED Light Bulb

A:  HD is pretty reasonable returning items. Contact HD directly.

A:  Not sure what you are asking. Does Cree make a floodlight bulb? Yes they do.

A:  Call Cree. They are very good about sending replacements.

A:  I had the same problem. Go to: http://creebulb.com/warranty .... "Limited Warranty: If this bulb does not operate for 10 years (based on 6 hours per day / 7 days per week of normal consumer use) from date of purchase when used as directed, return the bulb with proof of purchase, register receipt and your name and address to Cree, Inc. (Consumer Warranty), 4600 Silicon Drive, Durham, NC 27703 USA.

A:  I just bought this bulb myself and have no idea what is in store for its longevity, durability, or interior workmanship. I would take it back to the place of purchase and simply indicate it may be defective in some way and see what they say. Is it worth making a stink over a single $20. electric light ? Maybe...

A:  I had one of these bulbs in a good fixture without a dimmer. After less than 1,000 hours it dimmed to about a 60 watt bulb and started flickering once in a while. A lot less than the 25,000 hours promised. I checked the fixture again and it was still good so I bought a different brand, an ecosmart, and it works fine. I'm hoping it will last longer than the Cree. By the way, if you read the fine print, it says 100 watt LED bulbs should not be used in a totally enclosed fixture.

A:  I have not noticed any buzzing of my 4 installed bulbs of 9 months.

A:  My guess is that it is another issue. I've never had a buzzing issue with an LED bulb, and I've installed lots of them.

A:  That requires a true three way bulb and not a dimmable bulb

A:  It will work in a three-way fixture but only for one brightness; a three-way fixture has two switch settings for bulbs meant to work with it...it's one, the other, or both. Dimmable needs a compatible dimmer to vary the current.

A:  Yes. I've done it without any issues.

A:  Yes, a dimmable LED bulb can be used in a 3-way lamp.

A:  A 3-way bulb is required. I don't know if LEDs come in a 3-way configuration. The incandescent variety has two filaments of different brightness. "click one" is the low brightness, "click two" is the high brightness, "click three" is both together. Both a special socket/switch AND a special bulb are required.

A:  I would not recommend as the 18W consumed is all being dissipated in the finned heat sink at base & appears to need air flow to keep it from failing prematurely like the 3 of 14 I installed. If you use a smaller wattage, the results will be long life, whereas these have too much heat with no direct path to cooling

A:  Yes, as long as the fixture is rated for a 100W incandescent bulb, this puts out less heat.

A:  I can't believe the number of folks who answer "yes" to this question. While it is true that you may be able to physically fit this bulb into an enclosure, and an enclosure designed for a 100W incandescent bulb will not be harmed (as some pointed out, an LED is cooler than incandescent of the same output), it's the LED BULB that can't handle the enclosure! LED bulbs are advertised as lasting 10,000 hours plus....that's true if it's installed per the package instructions. The fastest way to kill an LED bulb prematurely is to deny it adequate cooling. Bottom line: If the packaging says not to put it in an enclosure, don't do it.

A:  See spec sheet on main item page: "Do not use in enclosed fixture."

A:  No, according to Cree (I called after mine burned out), due to a design flaw, this bulb fails within a few weeks if it is anywhere that doesn't have good airflow. Installation in a full or partial enclosure voids the warranty (it's written on the box, they said). They almost didn't honor my warranty because my bulb had a protective steel cage around it; ridiculous.

A:  Yes

A:  Yes, assuming it fits. It burns cooler than an incandescent, and is more resistant to trapped moisture and other elements in an enclosed fixture.

A:  No. The packaging says it's not for fully enclosed fixtures, and the bulbs are prone to early failure to begin with. Putting them in an enclosed fixture where the heat would build up would probably cause them to fail VERY quickly, and would nullify the warranty.

A:  NO

A:  No. The 100W CREE bulbs will overheat in an enclosed fixture and die prematurely.

A:  For example, if your electricity costs 8 cents per KiloWattHour (One thousand Watt-Hours) this 18W of dissipation would cost: 18/1000 * 0.08 or approx 0.144 cents per hour of usage. IF burning continuously for 1 year, approx $12.61.

A:  Don't know bulb for bulb, but my energy bill keeps going down as I slowly convert everything to LED.

A:  The reason I bought these bulbs is because they have a substantial finned heat sink around the neck that should dissipate enough heat to keep them cooler than the average bulb of equivalent power.

A:  Mine is warm, but not too hot to handle. An infrared thermometer measured between 100 and 123 degrees F.

A:  The globes should be able to be touched - I have removed bulbs from sockets just after turning them off. Don't touch the base immediately after use, it is normally hot enough that you might drop the bulb reacting to the temperature.

A:  Cool to the touch bulbs, after all these are LED lights. They are supposed to be very efficient at not wasting energy by producing unwanted heat ! Great idea these bulbs but boy they really need some quality control measures as they are very poorly made. Great bright light when they work tho.

A:  They are cool to the touch if that's what you mean. The color temperature is 2700 which is like an old "soft white" incandescent bulb.

A:  Uncomfortably warm to the touch but not enough to cause burns unless held for an extended period.

A:  No, LED bulbs of this equivalent wattage are nothing like a regular incandescent bulb using 100 watts compared to the 23 watt consumption, and should not be hot, just mildly warm to the touch.

A:  I have no idea what the temp is. It was in a lamp that is open at the top and bottom, well ventilated.

A:  Not sure the temperature. But it's still a little bit hot to touch.

A:  From my experience, the heat sinks get hot to the touch pretty quickly.