Philips 420224 10-Watt L-Prize Award Winning 60-Watt LED Light Bulb

I purchased two of these LED light bulbs for a ceiling dome light in our home office. This room has 11 foot ceilings, and it was a pain getting a 9 foot step ladder in & out of the room every time one of the old incandescent bulbs burnt out. The glass dome for this ceiling light is frosted.I really like these LED bulbs, assuming they last as long as advertised. The light they give off is a soft white, and is indistinguishable in that regard from the light from our old incandescent bulbs. They are slightly dimmer than the standard 60-watt incandescent bulbs we used before, but we have always had to supplement the room light with desk lamps, so that is not an issue. There is also a very slight (less than 1/2 second) delay between flipping the switch & the lights coming on, but it is not a bother for us at all. Finally, I have not noticed a buzzing sound coming from these bulbs as another reviewer noted.I highly recommend these bulbs - I just wish they were less expensive! I will be buying more over time to replace other incandescent light bulbs throughout our home.

Bought two on January 29, 2013 and one failed November 2014. It worked ok until it failed but it cost a lot to fail that soon. Both were installed in kitchen recessed lights.

The light colour and brightness is great not to mention its unbeatable energy efficiency.Yellow colour of cover when off and striped light at grooves are drawbacks.Especially if bulbs are exposed or behind translucent sconce shades.When used with some dimmers, light makes a hum at low brightness.

WHAT THIS ISThis is the light bulb that won the US government's L-Prize, which was set to spur creation of highly efficient lighting. There are two products out there, but as far as I can tell, only the packaging is different. The other item is here - compare prices and order the cheaper one :)LIGHT OUTPUT AND QUALITYThis thing puts out 940 lumens of light using less than 10 watts, something one would need an 60W incandescent or even halogen bulb for. This is better than CFLs - and yet, it's not its best feature!The best feature is the pleasant light. Typical energy saving light sources have a Color Rendering Index of 80 (out of 100 max), meaning that they lack certain wavelengths present in natural light and therefore have a tendency to make things look unnatural even if the light itself appears white. This bulb's CRI registers at 93, which is still not perfect, but in my opinion perfectly adequate. I can distinguish CFL light from "real" light, but I don't see a difference between this and, say, halogen light.DIMMINGThis product is also designed to work with dimmers. Mine is acting up a little: the dimming seems to work in discrete stages (maybe 10 levels as opposed to continuous), and once the desired level is reached, it switches to a slightly higher or lower output after a few seconds. Also, there are funny color casts on the dimmer side (pink and blue, alternatively). But still, it works on the higher levels and newer dimmers will probably cause less problems than my six year- old Insteon.DOWNSIDESSo what's not to like? Two things:1) the bulb is rather unsightly, and yet it must not be used in closed fixtures2) it's still expensive, almost ten times as much as CFLs bought in bulkENERGY SAVINGSPhilips gives you a rather conservative "saved dollars" amount. But I'd recommend you do your own math as there are some numbers that Philips may not be allowed to factor in:- One is the cost of electricity. In my case, the official rate is 11 cts/kWhr. But that number doesn't include taxes and "delivery"; once that is accounted for, the real cost is about three times as high!- The other number is the saved air conditioning cost in the summer. 50 Watts of heat are produced less, and those 50 Watts take an even higher number of AC power to compensate.WARRANTY EXPERIENCEOne of my bulbs failed after 6 months of use. I admit I used it 6+ hours daily, but it was freestanding and upwards-facing all that time, so that shouldn't have happened. The first thing I did was enter an issue through Philips' web site - they didn't have the model so I picked a close one and explained my plight through the web form. Shortly thereafter, I got an email asking for another dozen data points (purchased where, model number, did it say "Philips" on the bulb, etc.), and requesting that I call a phone number with the info. I tried my luck and replied by email instead of calling, but didn't hear back. However, a few days after that, I got a check in the mail, as well as a prepaid Fedex return slip to please send in the defective bulb for analysis. It was nicely worded, apologetic even. I actually would have preferred to just receive a replacement bulb in the mail because the price had gone up, but that's complaining on a high level. Overall, my warranty issue was handled courteously and quickly.CONCLUSIONIt's mostly the purchase price that is holding this bulb back. If it was in the same range as CFLs, there would be no comparison - hopefully, this will happen in 2013! If you're an avantguardist (read: money is less of a factor), this light bulb is definitely "it".

I think I'm going to buy these bulbs from now on. The color is indistinguishable from an incandescent to me. They only use 10W. And will last over 20 years!I have a rental house with whatever random (probably old and cheap) dimmers the landlord installed, and these bulbs have absolutely no problems with the dimmers, going smoothly down to barely-on. As other reviewers have noted, they don't get more orange when you dim them like incandescents do, they keep the same color and just get dimmer--almost as if they are becoming a smaller bulb. The only slight weirdness with the dimming is that at the absolute rock-bottom of brightness it looks slightly green. But that's so low you wouldn't really even bother with it so low anyway without just turning off the light.If you're looking for the best LED bulb, I believe this one is it.