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LED Light Bulbs on Track to Replace Regular 60-watt Bulbs

by Suzanne Kantra on January 14, 2010

Toshiba LED A-lamp

Toshiba LED A-Lamp

You probably have some type of LED (light-emitting diode) in just about every room in your home, whether it’s in a clock, computer display, appliance or piece audio/video gear, to name a few. And the proliferation isn’t over. Within the last few years, LEDs have been touted as a replacement for regular household incandescent bulbs.

To date you’ve seen LEDs in under-cabinet strip lighting, flood lights and small bulbs, but the 60-watt replacement—the workhorse bulb for most homes—has remained elusive. This year, though, it looks like the dimmable 60-watt replacement LED bulb will finally give the incandescent some competition.

LED bulbs last about 40 times longer (about 19 years based on 3 hours use per day), require less than one tenth of the electricity and, unlike red-hot incandescent bulbs, they give off so little heat they can be used in sealed environments. However there are a few drawbacks. They cost about $50, so while over the long run they’ll cost less, you have to lay out your cash up front. They only come in a frosted glass, and they require a heat sync (metal fins at the base of the bulb). While the bulb feels cool to the touch, the components inside generate less light as they heat up.

When shopping for an LED bulb, you’ll want to pay attention to the light output, which is measured in lumens (Current Federal Trade Commission regulations require most bulb packages to display it). For a true replacement, you need about 850 lumens, the amount a 60-watt incandescent puts out.

Most bulbs touted to be 60-watt replacements fall short. You’ll see 6- to 8-watt LED bulbs labeled as such. LED lumen output varies, however when you consider that most LED bulbs output less than 100 lumens per watt, you can see why the lumen rating is so important.

Geobulb cool and warm

GEObulb in cool white (left) and warm white (right)

The other factor to consider is the color of the light. The warmer the white, the more it will look like a traditional incandescent and the more flattering it will be to most skin tones (look for one between 2700-3000 degrees Kelvin). Cooler lights provide higher contrast, which make them better for reading. Today, color labeling varies by manufacturer and by the type of bulb. However the Federal Trade Commission is working on a new label that may be finalized later this year that will add color appearance, the estimated yearly cost of operation and mercury content.
FTC proposed light bulb label


Today there are a few non-dimmable bulbs on the market, including the 7.5-watt GEObulb-2 ($45 at and 6-watt Pharox60 ($50 at, both of which produce light output closer to a 40-watt bulb, if you look at the lumens. Last fall Panasonic was showing a 6.9-watt bulb at CEATEC, the Japanese electronics show, and this spring Toshiba says it will start selling a 6.9-watt bulb here in the U.S. The ball is rolling.


Health and Home, News, Lighting, Green Tech

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