HD is pretty reasonable returning items. Contact HD directly.
Not sure what you are asking. Does Cree make a floodlight bulb? Yes they do.
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.
I have not noticed any buzzing of my 4 installed bulbs of 9 months.
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.
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.
Don't know bulb for bulb, but my energy bill keeps going down as I slowly convert everything to LED.
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.