|Bulb Diameter (In.)||2.4||Product Height (in.)||4.4 in|
|Actual Color Temperature (K)||2700||Average Life (hours)||25000|
|Bulb Construction||Plastic||Bulb Type||Household|
|Color Rendering Index (CRI)||85||Indoor/Outdoor||Indoor/Outdoor|
|Light Bulb Base Code||E26||Light Bulb Base Type||Medium|
|Light Bulb Features||Dimmable, Energy Saving||Light Bulb Shape Code||A19|
|Lighting Technology||LED||Lumens (Brightness)||815|
|Number of Bulbs Included||4||Returnable||90-Day|
|Wattage (Watts)||9.5||Wattage (watts)||9.5|
|Wattage Equivalence||60 Watt|
|Manufacturer Warranty||10 Year 100% Satisfaction Guarantee|
A: I'm using Cree and Phillips LED's and have been very pleased with them. I haven't heard any noise or hum out of any of them, and I would notice -- I'm a chorister and an audiophile so my hearing is acute.
A: Mine haven't and they have been in for about 6 months now.
A: Not in the least. These are quiet to the point that I cannot hear anything coming from them at all.
A: I've not experienced any hum issues with led bulbs or tubes...my suggestion would be to move the bulb to a lamp, and see if it still hums...if it does, then it's the bulb...if it doesn't, it's probably the dimmer switch....
A: I have installed Cree LED bulbs throughout the house. None of them hum.
A: I have a 4-bulb light fixture where I installed these CREE bulbs. They are mounted base side up and there is a glass shade around each bulb with the bottom open as is the case with many bath fixtures. There is almost no flickering and they have been in use for 1-2 or more years now. When I say almost no flickering, I mean that on occasion you might get the slightest reduction in brightness and then it's back to normal. It's not a regular occurrence but every once in a while you might notice it. It's almost like there's a slight dip in the line voltage or something. I do have some other LED retrofits in my kitchen ceiling and they are sensitive to voltage fluctuations. When there is a fluctuation, they will blink off and then come right back on. This does not happen that often but might occur a few times/year. Those bulbs also have a slight delay in producing light from when you flick the wall switch. All the newer LED bulbs are now usually the instant-on variety.
A: I have installed these in nearly every light fixture in my house and have not noticed any flickering. I don't have any installed in dimmable applications. There is a very noticeable difference between Soft White bulbs and Daylight bulbs.
A: No not at all.
A: We have had no flickering with any of the eight bulbs we are using in our bathroom lights.
A: If there is, I haven't noticed it. I work in a church and may not be in any area very long at a time.
A: I have no idea what you mean by hub and how much does it cost. This bulb is complete and works just like a regular screw in type light bulb. If you misspelled something then take time to read or spell check. If you are talking about a different item then please select the correct item you are asking more information about. I looked over the HD web site on this product and there was nothing about a hub on it.
A: Home Depot. Price varies. There are some good rebates that bring a 4-pack down to under $5.
A: This product is a 4-pack of LED dimmable bulbs. You are probably thinking of a smart hub in combination with LED lights to be able to control different lights in the home. Right now, this 4-pack is at a great price due to a $16 instant rebate. You would have to search for the type of smart hub controller that fits your needs to go with these bulbs or any other bulbs of your choice. There are also bulbs that have built-in links to go with smart hubs. Once again, it's up to you to decide what products will meet your needs. This is probably what you are thinking of and it's at Home Depot. http://www.homedepot.com/p/Sengled-Element-Classic-Smart-Lighting-Starter-Kit-with-Smart-Hub-and-2-A19-2700K-60W-EQ-Dimmable-LED-Bulbs-White-E21-G14W/301370896
A: LED bulbs do produce heat. They also are basically electronic devices, therefore heat can damage them. With this in mind manufactures have created heat sinks - materials placed to draw the heat away from the sensitive components. The heat sink is the base portion and will feel hot during operation.
A: Nope, not faulty. The bulbs do generate some heat because no system is perfectly efficient, and the small amount of excess heat is intentionally radiated through the base of the lamp to cool the electronics inside. It is still hot to the touch, but where an incandescent bulb would produce skin burns almost instantly if you touched it, LEDs tend to be just hot enough to be uncomfortable.
A: LED bulbs do generate heat. In this bulb, and in many LED's, there is a heat sink near the base that absorbs the heat and dissipates it from the bulb. Some versions of these have slotted openings around the base to allow the heat to get out by convection. So, it's normal for your bulb to heat up at the base as it does. The bulbs are efficient in that they produce light with far less power than an incandescent putting out the same amount of light. http://spectrum.ieee.org/tech-talk/semiconductors/devices/cree-loses-heat-sink-to-engineer-cheaper-led-bulb
A: I'm not an engineer so any of my comments are anecdotal in scope. I've been using various LED bulbs in my house for the last two years -- ever since the incandescent bulbs started burning out. I have PAR floods of various sizes, 40, 60, & 100 watt equivalent bulbs, some dimmable (though I don't care for or use dimmers), some 3 way, all mazda sized sockets (standard, common light bulb sockets) and they all do get warm at the base but not dangerously hot. Some of my lamp sockets have paper insulating sleeves and none of them have shown any sign of excess heat. I have a lamp with an old, paper lined socket and a turnkey switch on the side and I have a 65 watt equivalent PAR flood in it that I've been using this way for almost two years and it's presently been on for a couple of hours and the socket is not too hot to turn the switch off and back on without any fear of burning myself. I personally am very comfortable with and pleased with the LED bulbs I've been using. I've had one Kree lamp fail. I called Kree and they promptly sent a replacement, no questions. I grew up with plain old incandescent lights which were hot and generally lasted a few months to a few years. Then CFL's came along and I tried some of them but wasn't much satisfied with them, plus there was a hazard if they broke with the phosphors and mercury. LED's came along and so far I've been totally pleased with them and eventually that's all I'll have in my house and also for outside lighting.
A: I have had no problem. I have studied and worked with lighting design. There will always be a slight temperature elevation at the point of contact. If you are experiencing a major problem I would suggest that you try using a lower watt bulb. There is always a possibility for a faulty product, but it more likely that the problem is in the lamp wiring.