Appalachian Lighting In The News
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July 9, 2010
In what is believed to be the largest lighting installation of its kind in the United States, Appalachian Lighting Systems, Inc. (ALSI) was selected by the Allegheny County Airport Authority to manufacture and deliver 1,347 new light emitting diode (LED) lighting fixtures at the Pittsburgh International Airport.
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June 7, 2010
A light-emitting diode (LED) lighting device manufactured by Wayne Township-based Appalachian Lighting Systems Inc. (ALSI) ranked as the most energy efficient lighting fixture now being manufactured.
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August 6, 2010
ALSI’s ALLED® brand downlight luminaire (LB2-02-7000) now holds Lighting FactsCM top position as most efficient luminaire in its category.
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The ALSI Advantage
Frequently Asked Questions
What is an LED?
LED is short for Light-Emitting Diode. An LED is a semiconductor diode that
emits light when current is passed through it.
Where are LEDs used to provide lighting?
LEDs are used for general illumination, aesthetic, effect, or specialty
lighting applications, including architectural highlighting. Traffic lights
and exit signs also now use red, yellow, green or blue LEDs.
What are the advantages of using LED lights?
- LEDs yield very high energy-efficiency, ruggedness, and superior life, as compared to other light sources.
- Required maintenance on such correctly designed fixtures is greatly reduced.
- Energy savings and maintenance savings combine to yield an overall reduction in cost of ownership, as compared to other light sources.
- LED lights are "green" in that they utilize no hazardous materials. Mercury is a bi-product of a significant number of non LED lights on the market today. Disposal of such fixtures has become a significant environmental problem.
How does one evaluate LED products?
For additional help in comparing ALSI products to other LED products,
refer to our
Design & Operational Parameter Chart
If a fixture is rated for 100,000 hours how long will it last?
Operational life is calculated based on how long a fixture is illuminated per day:
- Operating the luminaire 24 hours per day yields 11.4 years of operational life.
- Operating the luminaire 18 hours per day yields 14.8 years of operational life.
- Operating the luminaire 12 hours per day yields 22.8 years of operational life.
- Operating the luminaire 8 hours per day yields 34.2 years of operational life.