Here are things that you should know about what to look for in a LED

1. Brightness

A standard 60 watt incandescent light bulb produces about 800 lumens. It is important that the replacement choosing is based on the brightness, rather than the watts you want and need for the replacement Bulb. The new way to shop for light, when choosing LED to compare Light levels

1. Color Temperature
Color temperature is a measure of the color appearance of a light source which helps describe the apparent "warmth" (red/yellow)) or "coolness" (blue/white) of that light. Light sources below 3200 Kelvin (3200K) are considered to be "warm;" while those above 4000K are considered to be "cool" light sources.

2. Color Rendering
Color rendering index (CRI) is the ability for any light source to render colors accurately. The CRI scale goes from 1 to 100. A CRI of 85 is considered to be very good, a CRI of 100 is considered perfect. LEDs in a warm white color temperature are currently available with a CRI of 80.

3. Efficacy
As with all light sources, the efficacy of LEDs is measured in lumens/watt, the amount of light produced by one unit of power.

4. Heat Generation
In fact, all light sources generate heat and LED lights are no different. Thus, it is important that an LED fixture is well-designed with "heat sinks" to adequately dissipate the heat that is created.

5. Lifespan
LEDs do not burn out like an incandescent light bulb. Instead they get progressively dimmer over their lifetime until they no longer emit enough light to be useful. An LED is generally considered to be no longer useful when it is emitting only 70% of the original amount of light the LED produced