aka Foot Candles
COLOR OR LIGHT
Must match your Decor
Warm or Cool
Smaller the better
C R I
Color Rendering Index
Higher the better
Longer the better
The amount of light provided by the bulb. Compare the LUMENS (Bulb's Brightness) for each manufactured brand of the same wattage. You will want the HIGHEST Lumen output for your money.
Compare the Bulb's Life per manufacturer.
The LONGER the better... 10,000 to 12,000 hours are better.
The best is 15,000 hours.
If you have earth colors (brown, yellow, green) in your room, you want a bulb that gives you matching WARM Color Light.
(Warm color light just like the light from Incandescents)
If you have cool colors (blue, silver metal trim) in a bathroom, you want a bulb that gives you matching COOL Color Light. Check the Bulb's box to see how the Bulb's Light Color is shown:
WARM Color = soft white or yellow flame or 2,700 Kelvin
COOL Color = day light, blue sun or 6,500 Kelvin
Note overall size of the bulb in length and width. SMALLER the better to avoid problems with fitting into your light fixtures at home.
If the CRI data is on the box and that is a BIG "IF" - the Higher the number the better. In the 80's is very good.
Avoid bulbs with a CRI in the 60s or 70s
A Warranty of at least 90 days. A year would be great, 15 months is better and the best we have seen is 2 years.
Bill Lauto, at GoingTrueGreen.com
International Sustainability and Energy Consultant
Contribute your comments!