|Item Weight||8.8 ounces|
|Package Dimensions||9.8 x 7.2 x 2.4 inches|
|Item model number||423244|
|Type of Bulb||LED|
Philips 423244 10-Watt 60-Watt L-Prize Award Winning LED Light Bulb
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- The most energy efficient 60-Watt replacement ? A bulb so efficient it won the L-Prize from the U.S. Department of Energy
- Philips 10-Watt Award Winning LED Energy Saving A19 household bulb can replace your 60-Watt incandescent A19, saving you up to $165 in energy costs
- Ideal for use in kitchens, living rooms, bedrooms and hallways in your table and floor lamps, pendant fixtures or ceiling fixtures
- Medium base A19 household light bulb lasts 22.8 years, is instant-on, will not fade fabrics or colors and contains no mercury
- Fully dimmable - Dims just like an incandescent bulb
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This item Philips 423244 10-Watt 60-Watt L-Prize Award Winning LED Light Bulb
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|Sold By||—||SANTAORNAMENTS||Amazon.com||Amazon.com||Premium Household||Bulbs"n"More|
|Light Source Type||LED||LED||LED||LED||LED||LED|
|Additional Features||dimmable||Dimmable, Instant On, Shatter resistant||Dimmable||Dimmable||Instant On||—|
|Wattage||10 watts||9.5 watts||9.5||10||8||8.5 watts|
Philips Award Winning L-Prize LED 10W A19 light bulb is the efficient alternative to a standard 60W incandescent A19 bulb. This dimmable LED is so energy efficient, it is the first 60W equivalent A19 LED bulb to win the L-prize from the U.S. Department of Energy. Providing omni-directional light, this A19 LED is ideal for use in kitchens, living rooms, bedrooms and hallways. It provides a beautiful, soft white light and can save you up to 165 in energy costs.
Top customer reviews
I love this bulb! The light from this LED is exactly as advertised--very bright, omnidirectional, and in the same pleasing color of incandescent bulbs. Even my very picky sister, who claims CFLs give her headaches, is satisfied with the L-Prize light. There is absolutely no flicker or hum to bother her, and the color faithfulness is fantastic. Its 92 CRI (Color Rendering Index) is much higher than any competing LED or CFL in the A19 warm white form factor, and very close to the maximum 100 on the CRI scale. Cheap, imported LEDs can have really horrible color, like early CFLs had. If you go with any other bulb, always look for an Energy Star seal of approval, which guarantees at least an 80 CRI (the L-Prize bulb will get Energy Star status very shortly). Color temperature is different from CRI, but just know that it produces warm, yellowish light exactly like an incandescent bulb, not harsh blues or ghastly greens like first generation LEDs and CFLs. And this bulb is very bright--at 940 lumens, it's 17% brighter than the 800 lumen output of a 60W incandescent.
There is a very slight (but noticeable) delay when turning it on--perhaps 1/5 of a second. It does come on at 100% percent brightness though, with no 'warm-up time' like CFLs need. This bulb can be dimmed smoothly down to 10% of output, but the light quality suffers. Instead of transitioning to a romantic and orangey candlelight glow, these get a progressively harsher, unflattering color. I recommend just using them close to full brightness. Also, like most LEDs, these should not be used in totally enclosed fixtures or you risk shortening their life. Finally, some may find the appearance of the unlit bulb ugly if placed in unshaded fixtures. Personally, I think it looks cool (and it's a great conversation starter). The light yellow panels and white body look much more attractive to me than the bare LEDs and exposed metal fins of other LEDs' heat sinks.
This is by far the biggest drawback. Fifty dollars?! Is Philips crazy? Well, depending on where you buy this bulb, maybe not. You see, some local electric utilities are offering rebates of between $10 and $25 when you buy this bulb, applied automatically at the register. No rebates for online retailers, unfortunately. If you can find this discounted at your hardware store, buy it! Not only is the quality of light great, the efficiency of this bulb is unmatched. It gets a whopping 94 lumens per Watt. Compare this to the measly 13 lm/W of a 60W incandescent, or ~64 lm/W in current CFLs or LEDs. It's 50% more efficient than ANY other bulb of its type. Wow!
Whether that efficiency is worth it to you is another matter. If you're satisfied with CFLs or cheaper LEDs, the efficiency gains of this bulb will not offset the $50 bulb cost or save you money. But if you get a store discount or have applications where CFLs are unsuitable (like cold/high humidity/heavy vibration/frequent on&off cycling), then buy now! As a rule of thumb, for every 60W incandescent you replace with one of these, figure it will save you $2 per year for every hour you typically burn it per day. If you have a 24/7/365 application, it will pay back even the $50 price in a single year. With reduced A/C use and bulb replacement costs, it should even turn a profit. Make sure you place these bulbs in the highest use rooms of your house so they have the quickest return on investment.
To take the L-Prize crown, this bulb was put through a slew of very rigorous tests FAR exceeding the requirements of Energy Star LEDs. The DoE put these LEDs, along with some high quality CFLs in a light bulb "torture chamber" where they were subjected to extreme heat and cold, high humidity, vibration, repeated on/off cycling, and various degradations of voltage and electrical quality. ALL the L-Prize bulbs emerged unscathed from the stress testing, while every single CFL died. I wouldn't worry too much about breaking the thing. Though pretty hefty, it has no fragile filament, no glass, and no moving parts. Teardowns of the bulb show it has exceptional build quality and use very good electronics and capacitors inside. Even so, save your receipt and UPC for the warranty period.
Unlike the sudden death of traditional bulbs, LEDs fade over time and are normally deemed "dead" when they reach L70, or 70% of original light output. High heat accelerates the degradation. Well, the DoE has been running 200 of these bulbs continuously for over 12,000 hours at 113°F (45°C) in accelerated life testing to verify Philips' claim of 30,000 hours life. With 95% confidence they can predict that these bulbs will maintain over 99% of their light level after 25,000 hrs of use! Amazing!
--Updates (Feb 2013)--
LEDs are a rapidly evolving technology, and there have been notable changes in the past year. Here are a few:
- The L-Prize bulb formally received Energy Star certification on May 4, 2012.
- DoE testing is ongoing, still with no failures among the 202 test bulbs after 22,000 hours of use. Also, an L-Prize bulb will be housed in the Smithsonian next to Thomas Edison's original incandescents. It's that big a deal!
- Massachusetts and Rhode Island residents can buy these bulbs for just $10 each. That's a KILLER price. Google "estarlights" to find the website.
- Philips started selling packs of color-changing LED bulbs called Hue. Very pricey, and only 40-Watt equivalent brightness, but Forbes called it "The Best Product of 2012". I bet this will become a common feature for home lighting in several years.
- If you like the appearance of Hue, but can't pay $60 per bulb, Philips now sells new 830-lumen, 11-Watt bulbs with the same (not yellow) aesthetic for $25. The 75 lm/W efficacy is midway between the old AmbientLEDs and the L-Prize LEDs, but it can dim down to 2% of full brightness. They also come in 5000K (daylight), if you prefer a bluer light.
- Switch Lighting released bulbs (in 40,60,75, and soon 100-W equivalents) they claim can safely be used in totally enclosed fixtures, unlike most other LED lamps.
- Several 100-Watt equivalent LEDs are entering the the market now, but they're usually in the longer A21 form factor. A year after launch, the L-Prize bulb remains the lamp with the highest efficiency and best color accuracy, as well as being the LED brightness champ in the typical A19 length. But expect that to change in 2013!
- Cree, a giant in the LED industry, made a big splash by debuting their first LED bulbs marketed directly to consumers. The big news about them is the price--only $13 for a 60W equivalent, and $10 for a 40W. It also has a 10-year warranty, and a more conventional glass-globed design (if you dislike the appearance of Philips' bulbs). I still prefer the L-Prize for its greater CRI and brightness, but if you can't buy them cheaply in your state, Crees are your next best option, and available nationally at any Home Depot.
- Executives at both Philips and Cree have predicted that 60W-equivalent LEDs should break $10 by the end of 2013. But don't let that dissuade you from upgrading now--no competing bulbs will top the L-Prize's light quality for a while, and if you go with Cree you'll likely save money faster than any future price drops.
- DoE testing has concluded on their 202 L-Prize bulbs and they've more than lived up to their promise. No failures among them, and they maintained 100% of their original brightness even after 25,000 hours! This proves that well-designed LEDs really can deliver on their incredible claims.
- Unfortunately, it seems Philips is discontinuing production of the L-Prize and focusing fully on their less expensive (and lower spec'd) AmbientLED line. While affordability is crucial for widespread adoption of LEDs, and a CRI of 80 is good enough for most people, I'll miss having a higher-end option with better color accuracy. It may be several years before manufacturers focus on surpassing the L-Prize in that regard.
The drawback to this bulb even though it is suppose to be "dimmable" is that it unfortunately does not work with dimmer slider that the Jonathan Adler Lamp uses. Since my lamps are nearly $500 each I'm not looking to replace them so I can dim the lights in my room. I rarely if ever find that I am using my lamps in a dimmer setting so I am ok with this, but I have to remove a star from the product rating as it just doesn't quite deliver 100% of what it promises with what I would consider a pretty standard lamp dimmer switch. I don't know that you can specific what dimmer you're going to get on a floor lamp, unlike what sort of dimmer switch you can actually install in a wall socket. Which is unfortunate and more of a furniture designer issue more than it is a bulb manufacturer issue.
Well back to my review of the bulb. The light that the bulb produces is nice and accurate, soft warm light won't make you feel like you're in a sterile office setting or hospital. Other than it being 49% brighter it is virtually indistinguishable from a regular incandescent bulb from a lighting aspect (there is no flickering or warm-up time like CFL).
The bulb is much heavier than a regular bulb so for fixtures that have loose hinges this might be an issue, but for most cases this shouldn't be an issue.
There is one design and one very minor technical flaw that I can see being an issue for some customers. If you're placing this bulb in a chandelier or open type fixture where you see the bulbs, the look of these will certainly change the aesthetics of the fixture you're installing them in. And because it does look so unconventional it might even attract more attention than the fixture itself does. It looks very futuristic indeed, and though the outer shell is a very bright yellow, when the bulb is turned on the light produced is normal.
The minor technical flaw that I've noticed, is when using the dimmer switch if it's slightly less than 100% on, it does produce the faintest of buzzing or hum. It's not loud enough to be irritating and I've found that in my case, if I turn the dimmer on 100% on my lamps the noise goes away almost entirely. It's not a high pitched irritating sound like old CRT computer monitors, but it's a low hum/buzz that can easily be washed away in a normal sound environment (regular conversations, TV, or music in the background, etc.). It could also be an artifact of the lamps that I have and the dimmer not being compatible with these bulbs. But I don't have another dimmer fixture to test this on.
Overall, I'm pleased with the increase in brightness in what I thought was a room that needed at least one more light. And these did the trick. I am actually looking forward to my next energy bill to see what impact these and the Philips BR30 13W LED bulbs I've purchased. But I'm comfortable in knowing that I can now leave my living room lamps on for the entire evening and they will use less energy than one hour of the old incandescent bulbs.
All three of these give off excellent 92 or 93 CRI light, though the light from the Cree looks the most pleasing to my eyes. But it's a bit less efficient and more expensive than the Feit. The other bulb I like is Ikea's 75w replacement - it can't be used in enclosed fixtures, but it's bright at 1000 lumens, and looks just like an incandescent bulb when turned off - no heat sink fins. Short warranty though.