Support Center

If you have a problem or question regarding Philips products, please call 1.800.555.0050

FAQ

+ Lumens, Watts, and Life
+ How do you calculate the cost of operating a light bulb?
+ How is the life of a light bulb determined?
+ Can you operate a 100 watt light bulb in a socket rated
for 75 watt?
+ How does a three-way light bulb operate?
+ What is DuraMax®?
+ What is Philips Halogená®?
+ What is the difference between Incandescent and
Halogen Light Bulbs?
+ Does the Halogená® bulb produce more heat than the incandescent bulb?
+ What is Philips MARATHON™?
+ What is the difference between Incandescent and Compact Fluorescent Light Bulbs?
+ What is ALTO® Technology?
+ How to choose a fluorescent tube
+ Should I wait until a fluorescent bulb burns out before
replacing it?

Terms & Definitions

+ Color temperature or Kelvin temperature
+ CRI or color rendering index
+ Warm vs. Cool
+ T
+ Ballast