Saturday, December 1, 2018

How efficient are LED light bulbs?

Compare LEDs to compact fluorescent lights (CFLs) with 55-70 lumens per watt, and traditional incandescent bulbs with 13-18 lumens per watt, and the LED advantage is bright as day. LED manufacturers are not only increasing efficiency, they’re expanding options.

How much money do you save with LED lights?
The LED bulb uses only 25 cents’ worth. So the LED saves $1.23 per year. Since it costs $20, it will take 16 years to recoup the cost in electricity savings. At five hours a day, the incandescent uses $15.42 in electricity annually.
What is the equivalent wattage for LED bulbs?
(The point, after all, is that they draw less energy.) For example, an LED bulb with comparable brightness to a 60W incandescent is only 8 to 12 watts. But don’t bother doing the math – there isn’t a uniform way to covert incandescent watts to LED watts. Instead, a different form of measurement should be used: lumens.

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