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How to Choose LED bulb (1)
As your incandescents burn out, it's a good time to consider switching to LED bulbs. By now, you probably know
that LED bulbs have an impressive lifespan (Tens of thousands of hours!) and are very cost-effective. The cost
of LEDs have come down quite a bit in 2015.
Despite the cost, now's the right time to switch to LEDs. These bulbs have made significant advances over the
last few years, finally delivering the warm light incandescents have comforted us with for decades.
More than ever, there is also an overwhelming number of LED varieties, and choosing an LED is entirely different
from picking up an incandescent. Before you head to the store, find out what you need to know about choosing
the right LED bulbs.
Learn the lingo
Forget what you know about incandescents -- your watts are no good here.
When shopping for bulbs, you're probably accustomed to looking for watts, an indication of how bright the
bulb will be.
The brightness of LEDs, however, is determined a little differently.
Contrary to common belief, wattage isn't an indication of brightness, but a measurement of how much energy
the bulb draws.
For incandescents, there is an accepted correlation between the watts
drawn and the brightness, but for LEDs, watts aren't a great predictor of how bright the bulb will be.
(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.
The lumen (lm) is the real measurement of brightness provided by a light bulb, and is the number you
should look for when shopping for LEDs. An incandescent can draw up to five times as many watts for
the same number of lumens. Get a sense of the brightness (in lumens) you need before heading to
the store, and throw away your affinity for watts.
( to be continued )