We test light bulbs in a variety of different ways, and at almost every turn, the Philips SlimStyle Daylight LED left me impressed. For starters, it costs just $5 a pop, making it one of your most affordable dimmable daylight options in the LED aisle. Replace an incandescent with it, and you'll earn your money back in energy savings within a year.
|Philips SlimStyle Daylight LED||Philips 60W Equivalent Daylight LED||Cree 4Flow Daylight LED||Sylvania 60W Equivalent Daylight LED||Walmart Great Value 60W Equivalent Daylight LED||GE 60W Equivalent Daylight LED|
|Lumens (measured/stated)||670 / 800||738 / 800||625 / 815||738 / 800||709 / 800||711 / 900|
|Efficiency (lumens per watt)||64||82||63||87||71||65|
|Yearly energy cost (3 hours of use per day)||$1.26||$1.08||$1.20||$1.02||$1.20||$1.32|
|Color temperature (measured/stated)||4,758 K / 5,000 K||4,645 K / 5,000 K||4,561 K / 5,000 K||4,781 K / 5,000 K||4,562 K / 5,000 K||4,575 K / 5,000 K|
|Dimmable range||13.4 - 94.9%||9.9 - 93.2 %||5.0 - 100%||2.1 - 96.1%||18.4 - 99.5%||13.4 - 92.5%|
|Dimmer switch flicker/buzz||Light||Very light||Very light||Moderate||Moderate||Light|
|Life span||25,000 hours||25,000 hours||30,000 hours||25,000 hours||25,000 hours||30,000 hours|
|Weight||2.2 oz.||2.3 oz.||1.9 oz.||3 oz.||2.9 oz.||3.8 oz.|
|Energy Star Certification||Yes||Yes||Yes||Yes||Yes||Yes|
It isn't the best at anything, though. Sure, it's cheap at $5 -- but the Walmart Great Value Daylight LED is a buck cheaper. It does a decent job on dimmer switches -- but the Cree 4Flow LED dims even better. At 670 lumens, it isn't your brightest option -- but then again, none of the LEDs I tested came out as bright as promised.
The SlimStyle's best strength might be its light quality. Though all of these daylight bulbs did a fine job in my color-rendering tests, the Philips SlimStyle looked to be the sharpest of the bunch, with rich, saturated colors and a true, neutral white tone of light. All six bulbs aim for a hot, white color temperature of 5,000 K -- at 4,758 K, the SlimStyle LED was one of the closest to the target.
Less successful on this older rotary dimmer. Noticeable flicker at the lowest setting. pic.twitter.com/4ioaWjgB14— Ry Crist (@rycrist) August 26, 2016
As for dimming, the SlimStyle bulb did a good job in my tests, but not a great one. It didn't buzz on any of my switches (an issue with the very first batch of SlimStyle bulbs back in 2014), but it did give off a light flicker at low settings. Those low settings were also a little high for my liking -- on average, I was only able to dial it down to a minimum of 13.4 percent brightness. For comparison, the Cree 4Flow Daylight LED, my dimmable daylight pick, dialed all the way down to 5 percent.
Still, this is a well-rounded LED that'd work well for quick, practical lighting. With no real weaknesses to speak of, it's one of the easiest of these daylight LEDs to recommend -- though like I said, that Cree bulb is probably worth the extra buck if you're planning on dimming the lights.