Noisy Incandescent Slide Dimmer
579702
Noisy Incandescent Slide Dimmer. Caused interference to AM receiver. Does not work with dimmabe LED light. Makes LED light buzzing while dimming. Bought another brand EAGLE Incandescent Slide Dimmer that worked OK.
1726338
1. It makes a buzzy sound. It is a quiet buzzing sound, but it died buzz. Incandescents don't buzz. I noticed this because I installed one in a lighting unit in my bedroom that has two other incandescent bulbs. As I was walking around I kept hearing this annoying buzzing noise that I finally traced to the new LED. So annoying.

2. It doesn't dim as well as an incandescent. The aforementioned lighting unit is on a dimmer. The incandescents dim down to the point that they cast a romantic glow on par with candlelight. The LED? Not dim enough by half. I would say the incandescents dim down by 90% and the LED by 30%.

This was my first experience with an LED. I'm returning it tomorrow and stocking up on incandescents while I still can. Hopefully I can buy enough incandescents to tide me over until the problem with the LEDs is fixed.
3714332
We wanted a fixture in our hallway that we could dim down - which it does.  However, it makes an annoying buzzing noise when dimmed. I would not buy this fixture again.  In fact, I may ask my contractor to remove it so I can send it back.
2651156
This bulb looks nice, but it makes a noise when it is dimmed with my Lutron LED dimmer. The only LED bulb that I found that did not make the noise was the LightKiwi BR30 bulb (on Amazon).

The noise is barely audible, but I imagine that if you had this bulb in all of your light fixtures it might become noticeable.

I do like the nice painted heatsink on this model, which makes it easier to get into a recessed fixture.
4765520
Ordered this as a dimmer for HALO led lights but it buzzes like crazy!!! So had to find another one. Lutron's support online never responded. Test before using.
3148212
They worked well until I installed a Lutron DVCL-153P-WH Diva Dimmer which is on their recommended dimmer switch list. Then they buzzed loudly.
4188273
Tested this with Philips 9290011347 40W dimmable LED bulbs and also Cree 60W dimmable LED bulbs.  It caused both of the LED bulbs to generate a noticeable buzzing noise, even when not dimmed at all - this would only be noticeable in a quiet room, but it's enough for me to refuse to use it with LED bulbs.

In the end, I went with the expensive ELV dimmer (Lutron DVELV-300P-WH) to be able to get LED dimming without any buzzing noise.  There don't appear to be any ELV toggler dimmers available as of early 2018, so I had to convert to Decora to get the quiet LED dimming.
4406905
Dimming is unworkable. Light fixture becomes disturbingly noisy with even the slightest among of dimming. These bulbs are unuseable.  Had to revert to previous halogen bulbs.
2540131
The bulbs produce great, warm light but they are NOISY and FLICKER terribly on a dimmer even when not dimmed!!  I have tried now two different LED compatible dimmers (including the newest and most expensive Lutron) that have worked with other LED bulbs much better than these.  I will not purchase these for a dimmable area again.  I moved them to a standard switch and they are quiet and fine.
2407641
These emit a moderately loud buzzing noise. Once I swapped the bulbs in the fixture back to the old traditional bulbs, the noise stopped. So this does seem to be related to the bulbs, not the fixture.

They are bright and clear light. Very pretty. But the noise isn't tolerable.
352797
I wanted simply a dimmer control the fan light and needed something that had both controls in a single outlet.  The fan portion of this works great.  However, the dimmer leaves a bit more to be desired.  I'm using CREE 60w (9.5w actual) 800 lumen equivalent LED light bulbs since you can't buy 40w/60w incandescent anymore.  As others have mentioned you must turn the light on half way in order for the lights to come up at all.  That by itself wouldn't be a huge deal, except that it is very hard to get the lights dim with the LEDs without them shutting off completely.  Then you must turn the knob all the way back up again and turn it down slowly.  The other issue I have is that when I have the lights very dim, many times they will just shut off completely without touching the control.  I tried to mitigate some of these issues by purchasing a 60w equivalent halogen light which just skirts at the cutoff of the efficiency requirements, and replacing 1 of the 3 leds with that.  It help a bit, but it dims much quicker than the LEDs so it leaves to uneven dimming now.  Not the ideal solution: the halogen bulb was expensive, the problem still exists (just not as bad), it will burn out soon, and it uses more power.  The options for fan control/light dimmer in a single outlet are quite limited.  All dimmers for applications like this really need to support lower wattage solutions as that is the new norm today.  Also, when the lights are dimmed, the CREE LEDs do emit a humming sound.  These bulbs are designed for dimmers, but I'm not sure if this actually the fault of the dimmer or of the bulb.
523143
I install one of these and there's a buzzing sound coming from it. Using a Lutron dimmer. Other than that, light is nice and bright.
863120
I wish the colors of the buttons turned off-- it's distracting, since I use this as a night light. Also, when its brightness is high, it makes this awful, high-frequency ringing noise that I can't stand.
2448453
I bought these to replace Home Depot 60 watt equivalent LED bulbs. The Home Dept bulbs were fine, except they were too bright for my application. These Bioluz bulbs emit the right amount of light and the color is good. They do buzz, however. I do not have them on a dimmer, just an on-off switch. My fixtures use 6 bulbs so the noise is noticeable, about like an old flourescent light. So if noise will bother you, be advised.

Update: After 2 months the high-pitched scream went away. No idea why, but it is gone and I am happy. Raising my rating from 3 stars to 4.
179389
I required a dimmable LED 25 watt equivalent bulb for my son's reading lamp. My search found this one.

The pros:
+ 15.99 with free Amazon shipping when I purchased a 3 pack.
+ Compact size, will fit in tight places.
+ Standard E26 base.
+ 260 lumens.
+ 2700 kelvin, very close to warm white.
+ Advertised - 3 watt LED = light output of a 25 watt incandescent bulb.
+ Advertised - 85 CRI - Color Rendering Index.
+ Advertised - Dimmable in Most Legacy Dimmers (TRIAC) and Digital Dimmers. Returnable if your Legacy Dimmer produces unacceptable results.
+ Advertised - Dimmable range is 10% to 100%.
+ Advertised - Long life.

The cons:
- Doesn't work with an X-10 home automation lamp module. The LED bulb light flickers, dimming is erratic, jerky, unusable.
- These LED bulbs generate a large amount of line noise, which prevents X-10 module operation! See my remarks below.

Closing remarks:
 Measuring the line noise with an ACT AT004 X-10 PCC Multi-Tester, I read 40 mV of noise. When the LED bulb is turned on, the line noise jumped up to 590 mV of noise! This line noise prevents reliable X-10 module operation, so these LED bulbs had to be returned.

 It appears Grimaldi Lighting needs to add some power line noise suppression to this LED bulb!

 As much as I liked this LED bulb, it's not compatible with our X-10 home automation system. :(
997097
I believed the 5 star reviews and the reviews about the light not humming/buzzing when used with the dimmers. The light is bright and is good but there is a significant level of humming noise that will annoy anyone if used in a bedroom, living room, etc., I tried it with the Lutron MACL-153M-WH Maestro 150-Watt Multi-Location CFL/LED Digital Dimmer and also Legrand LED dimmer, the buzzing is still there. I will be returning the bulbs as its no good when you have an annoying buzzing when switched on. I hope Hyperikon looks into this and addresses this issue.
2499694
The mounts are long and thin, so the light shimmies back and forth (horizontally) making noise. My light kept moving and pointing down until I put a star washer between the light and the mounts.