LED 7.5 watt A19

These are my new go-to bulbs as my incandescents burn out. I've experimented with a few different brands and this one has been the most pleasing by far. I think of these as a replacement for 60 watt bulbs as the next step up was way too bright. The light could be just a bit warmer and I'd give it a perfect 5. Highly recommended.

Read the reviews and was wondering about the light color. It is a good replacement for the 40w lamps I had in my lamp. Not perfect to incandescent, but better that florescent. Good light spread, would buy another.

The writing has been on the wall for some time. LED's have taken over the flashlight industry, and the technology is quickly making inroads into the general lighting industry. As we are in the early stages of the introduction of the technology, the costs for LED lamps are presently much higher than they will be in the future. Like the compact fluorescent lamp, prices for LED lamps will come down in time, but whether paying $20 for a LED lamp now makes sense, probably depends on how much you intend to use the lamp. Lighting has its own terminology, which can be confusing, however hopefully most of what follows will be understandable.The Energetic 7.5 watt LED lamp has a standard A19 type screw shell, and will fit into most screw shell type lampholders. The lamp is dimmable, and produces a maximum of 450 lumens, which is roughly equivalent to the amount of light produced by a 40 watt incandescent lamp. Light actually has a measurable color, and this LED lamp is rated at 2700 degrees Kelvin, which falls into what is commonly classified as "warm white".The lamp has an unusual appearance, because although it generally has rounded sides, it has a hollow core. This means that the minimum amount of light, will be directed from the top of the lamp. This could be an issue for some downlight applications, or some may not like the lamp's appearance. LED's intrinsically produce a lot of heat, directed to the rear of the LED unit. Adequate heat dissipation must be provided, to maximize usable life. Failure to adequately dissipate heat, usually results in an LED failing.This Energetic lamp is Energy Star approved, and lists the life of the lamp as 25,000 hours, which works out to 1041.7 days, or 2.85 years. The light output of an LED source degrades over time. Standards for the rated life of LED's are still being developed, but generally a rated life of 25,000 hours means that at after 25,000 hours, on average, the lamp will be producing at least 70% of its initial output. This lamp has three panels of LED's, so supposedly after 2.85 years, instead of producing 450 lumens, you should be getting at least 315 lumens. Occasionally LED's will fail completely, and not produce any light, but this is not as common as with an incandescent source.Energy is measured in watts. This lamp uses 7.5 watts, and typically can be used to replace a 40 watt incandescent, or 20 watt compact fluorescent lamp. So there is an immediate savings in energy consumed. As the rated life of this lamp is 2.85 years, it probably makes the most sense for someone to consider paying $20 now, only if they anticipate very heavy usage of the lamp over the next few years. Why? Because two years from now, LED lamps will probably be more common and less expensive. So it makes the most sense to replace a heavily used lamp in your living room, rather than a lamp in a closet that you rarely use. If you need more output, Energetic also manufactures a 12 watt version of this lamp that produces 800 lumens.A local hardware store had these lamps on sale as a manager's special for $10. Otherwise, I would not have bought them, as the economics did not make sense for me at $20 per lamp. I replaced the compact fluorescent lamps in the light fixtures in the bedrooms and bathrooms with these lamps, and have been very pleased with the results. The output of the LED's appears just as bright or brighter, and my energy consumption has been reduced by at least 60%. I know that within a year the light output will degrade, but down the road there should be better and less expensive LED lamps available.Those considering a purchase, need to do the math and determine whether the estimated cost savings makes sense, as $20 is a lot to pay for a lamp. If it takes 3 years for the cost savings in electrical consumption to pay for the cost of the LED lamp, you will be just about breaking even.

I bought one of these on sale at a local retailer for $17. It is installed with other 40w bulbs over a bathroom mirror. Next to 40w incandescent bulbs it is noticeably brighter but not blinding. The light is as warm as incandescent bulbs. Compared to CFL bulb designs it is more aesthetically pleasing. Light is evenly dispersed. The LED light turns on instantly to full brightness. These are expensive but are better for the environment than CFL bulbs with mercury in them. As people buy LED bulbs they support new technology and help fund the R&D cheaper ways of making them.