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July 1, 2010
Vol. 5, Issue 7

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Hi , happy building!


This Month's Topic:

     Good and Bad LEDs

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  • Do you know how to select the most energy-efficient roofing?
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Good and Bad LEDs

LEDs (also referred to as Solid State Lighting or SSL) are shaking the foundation of the lighting industry as we know it. Now that a few companies have developed techniques to produce quality Solid State Lighting without the drawbacks inherent in earlier offerings, this revolutionary technology is turning up everywhere.

The Bad News:LED Deterioration Today's market still contains many inferior LED fixtures and bulbs. Substandard LED products can flicker, shift in color, look dim, offer uneven light, or continue to use power when turned off, among other problems. The photo on the right, from the Energy Star® site, shows the deterioration of a poorly designed LED product after less than a year of use.

The Good News: In order to offer some assurance to consumers, Energy Star® began rating five different categories of LED fixtures in mid-2009. So far ceiling-mounted downlights (can lights), under-cabinet lighting, and wall-mounted porch lights have been rated. However, Energy Star® is just waiting for manufactures to submit compliant products in the other categories. The rating program requires certified fixtures to meet criteria such as:

  • Excellent color quality
  • No flickering
  • Proper light distribution
  • Brightness greater than or equal to existing lighting technologies
  • Power usage of at least 75 percent less than incandescent lights
  • A life of at least 25,000 hours
  • No off-state power draw (the fixture does not use power when it is turned off)

Certified products also must offer a three-year warranty.

Energy Star® will begin rating LED bulbs next month (August 2010). Test procedures will ensure only bulbs complying with their high quality requirements will receive the Energy Star® label.

Lighting makers are rushing to get the first “mainstream” LED light bulb to the market. Lemnis Lighting is one of the first with its Pharox 500, a 7 watt, 500 lumin bulb. Phillips recently announced that their EnduraLED lamp (12 watts) should be available late 2010. Osram Sylvania is expected to release their Ultra LED bulbs in August 2010. The bulbs contain no mercury and are designed to produce high-quality light, but the cost is expected to be around $40.00 per bulb. Let’s hope that price comes down very quickly as more manufacturers enter this market.

The Benefits: Well-designed LED lighting benefits not only our comfort, convenience, and pocketbook; it's also a boon to the environment.

  • Long Life. An LED with a life of at least 25,000 hours means a bulb will last 22 years when used about 3 hours a day. In that same 22-year period, an incandescent bulb will be changed 25 times and a fluorescent bulb changed 4 times. Can you imagine never having to change a light bulb again? Most of us are likely to move out before 22 years rolls around.
  • Convenience. Think about those high, hard-to-reach places where changing a light bulb is not only dangerous but a royal pain in the you know what. In these situations, extended bulb and fixture life are of even greater benefit, especially for older or disabled homeowners.
  • Safety. No more burning your fingertips on hot light bulbs. LEDs are basically cool to the touch.
  • Long-term Savings. LEDs generally use at least 75 percent less energy than incandescent lighting. And because they produce very little heat, LEDs help reduce cooling costs.
  • Convenient Features. New indoor LED fixtures may offer features such as dimming; some new outdoor models are equipped with automatic daylight shutoff and motion sensors.
  • Energy Conservation. According to the DOE (Department of Energy), rapid adoption of LED lighting in the U.S. over the next 20 years can:
    • Avoid construction of 40 new power plants.
    • Reduce lighting electrical demand by 33 percent by the year 2027.
    • Deliver a saving of about $265 billion.

A Superior LED Can Light: Keep an eye on the LED selections from Cree LED Lighting Solutions, Inc. Cree is the leader in this industry, and they've come up with a unique way to produce bright, warm, dimmable LED lights that maintain their brightness and integrity for 50 years. These remarkable, Energy Star® rated can lights use 85 percent less energy than their incandescent counterparts and less than half the energy of comparable fluorescents.

Those of you who are remodeling will appreciate that these lights fit into a regular, existing six-inch can light housing.

     Cree LED Can light

Another benefit of Cree LED can lights is their appearance, as shown in the picture on the left. Sure is an improvement over the traditional can on the right, isn’t it?

Cree offers an Energy Savings Calculator to help you determine how much you can save by installing their LED can lights. Even though these lights are much more expensive than conventional models, you might be surprised by the results of this exercise. After reviewing the results shown by the calculator, one builder told me he intends to use these LED cans as a standard in his custom homes. For more information on Cree's new technology, its emerging LED product line, and the Energy Savings Calculator, visit www.CreeLighting.com

For a list of Energy Star qualified LED lighting fixtures, visit www.EnergyStar.gov


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Tracy DeCarlo, author of "The Difference is in the Details" publishes the idea-packed, monthly e-zine "Tracy's Home Building Tips." If you're ready to learn how to plan a more durable, energy-efficient, and easy-to-live-in home, get your FR*EE tips now at www.DetailedSolutions.net.

Tracy DeCarlo owner of Detailed Solutions, Inc. and One Stop Green Home Certification, has more than fourteen years' experience in the residential construction industry. As a Home Building Function Analyst, Certified Green Professional, Green Certifying Agent, and Certified Aging-in-Place Specialist, Tracy addresses the functional aspects of home construction, design, and usage, including items such as energy efficiency, disaster mitigation, air quality, aging in place, green building, plumbing, electrical, lighting, and storage.

By working with homeowners to focus on their daily habits and preferences, she helps them create living spaces that support and compliment their lifestyles, while at the same time teaching techniques to manage the bottom line.

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