DuraMax Lightbulbs Last One Year

DuraMax was the line of ˜˜good light bulbs , which would have a minimum life of one year. These were incandescent lightbulbs that were comparable to GE incandescent lightbulbs, which typically had a life of six months.

Depending on the particular lightbulb , this longer life was achieved through the use of a larger coil, a different gas, or a combination of the two. DuraMax had a full line of different incandescent lightbulbs.

Although DuraMax lightbulbs had twice the life of a traditional incandescent lightbulb, they were designed to have the same perceptible light output. For example, if a GE incandescent lightbulb had a light output of 880 lumens for a sixty-watt lightbulb, the DuraMax light bulbs might have 860 lumens for that same sixty-watt lightbulb. That difference would not be perceptible to the human eye. Philips knew that if it were to use an even thicker coil and reduce the light output to 800 lumens, that would be perceptible, so the company did not do that. It was a trade-off that was very carefully done.