LEDs vs. CFLs
Randall Whitehead, IALD, tackles the modern-day great debate.
The artist used red LEDs to create a glow of crimson light behind this bronze, x-shaped sculpture.
Randall, will the future embrace LEDs or fluorescents? According to some experts, LEDs don’t save much more energy than fluorescents. Also, they’re not cheap—but admittedly do defray maintenance costs in commercial projects because of their extremely long life. In residential lighting this explanation doesn’t really hold, so why is there so much buzz about LEDs?
Whoa, take a breath. It’s not a competition. I think that LEDs and fluorescents will both play a big role in the future and eventually nudge incandescent lighting out altogether. Both sources are energy-efficient, but they provide two different types of light. Fluorescent is an omnidirectional source, so it is better at providing ambient (indirect or general) illumination. LEDs are a unidirectional source, so they emit better directed (accent or task) light. A cohesive lighting design will incorporate both. LEDs have a great variety of uses in commercial design. They backlight signage, and they are in exit signs, traffic lights and behind the buttons of elevators. The more intense colors—red, blue, green and yellow—have a ready use in commercial settings. It wasn’t until a more incandescent color of LED was developed that an opportunity was created for residential spaces. These newer color versions have less brightness than their deeply colored predecessors, so they work better in homes where the ceilings are lower than in commercial spaces. The artist used red LEDs to create a glow of crimson light behind this bronze, x-shaped sculpture. The artist used red LEDs to create a glow of crimson light behind this bronze, x-shaped sculpture. Some forward-thinking companies like Permlight offer an LED retrim kit that goes into existing 4-inch and 6-inch housings. They come in a screw-in variety and a hard-wire variety. The screw-in takes three minutes to install, and anyone can do it. The hard-wire version would be necessary for Title 24 compliance and should be installed by an electrician. The 6-inch has a high enough lumen output to satisfy California’s Title 24 efficacy requirements. They are incandescent in color and dim with a standard incandescent dimmer. The 6-inch versions provide 75W worth of illumination for a fraction of the energy consumption; they last 50,000 hours (as compared to 750 hours for a standard household bulb, 2,000 hours for a reflector bulb and 10,000 hours for a compact fluorescent), and they are totally green. What could be better than that?
Randall Whitehead, IALD
Lastest from ask randall
The short answer is yes. The fixtures need to be UL-listed. UL tests fixtures so that they are safe. If the fixtures are UL-listed then UL will take... read full story
The bottom line is that lighting fixtures in the United States need to be UL/ETL listed. Lighting manufacturers invest a lot of money in getting... read full story
I like the direction that you’re going in. You can create little box beams to house recessed adjustable fixtures. You can use a remodel housing for... read full story
Live CEU Webinar: LED Lighting 204 - LED and Solid-State Lighting Opportunities for Aging Eyes, Health and Behavior
Wednesday, Oct. 14, 2-3 p.m. EDT Register for this free CEU webinar by clicking here. Webinar Overview:Learning units:AIA/CES LU (HSW) 1.0 Learning UnitIDCEC (IIDA/ASID/IDC/... read full story
Sponsored by Bock Lighting, CSL, Fanimation, Pure Lighting/Edge Lighting and USA LED Lighting Solutions. Wednesday, June 10, 2-3 p.m. EDT This free CEU webinar has... read full story
Archived CEU Webinar: LED Lighting 202 - LED and Solid-State Lighting Design Update for Residential Applications
Sponsored by Emerson, Ferguson and Pure Lighting/Edge Lighting. This free CEU webinar has already taken place, but you can watch the archived presentation on-demand by... read full story