We have compiled a list of LED fun facts that are informative and helpful to know.
For all those business owners, retailers, and houses of worship that have not yet committed to LED upgrades, these facts are important to consider.
An incandescent lamp converts about 9-10 percent of the energy fed to it into light, whereas LEDs convert nearly 100 percent of the energy they consume as light.
LEDs contain no mercury— and at least 95 percent of an LED is recyclable. Compare this to the wasteful design of compact fluorescent lamps (CFLs), which not only contain mercury, but also create a large portion of electronic waste due to their design — the fluorescent tube portion of a CFL ceases to work long before the ballast inside the CFL or its other electronic components are ready to die. This alone creates tons of waste every month.
LED lamps on average are not subject to serious damage from external shock. If you drop an incandescent lamp, there will be a lot of broken glass to clean up, and if it’s a CFL, not only will it break, there are mercury decontamination procedures recommended by the Environmental Protection Agency you will have to follow.
When LED light is used in fresh food displays, it has been proven to breed significantly less bacteria than its halogen or fluorescent counterparts.
A majority of residential/commercial LED A-lamp manufacturers claim a whopping 50,000 hours lamp life on average, with newer models claiming up to 100,000 hours. (Incandescent lamps have a lifespan of about 1,000 hours and CFLs have a lifespan of about 10,000 hours.) If this sounds impressive, it is! Consider your usage on just the 50,000 hour varieties:
If you use your LED bulb for 24 hours a day, every day, that bulb is rated to last 6 years!
If you use your LED bulb for 12 hours a day, every day, that bulb is rated to last 11 years!!
If you use your LED bulb for only 4 hours per day, that bulb is rated to last 17 years!!!
The U.S. Department of Energy estimates that the widespread adoption of LEDs in residential and commercial applications over the next 20 years will save about $265 billion (Yes! That’s BILLION!), will prevent the need for constructing 40 new power plants, and reduce the electricity demand of lighting by 33 percent.
If the entire United States would replace only 50 percent of the existing incandescent Christmas lights around the holidays, the potential energy cost savings starts around $17.2 billion dollars.
Switch to an LED bulb in the porch light and you’ll notice considerably fewer bugs, if not a complete decrease in your porch bug population! Why? Because incandescent lamps and CFLs produce copious amounts of ultraviolet and infrared radiation, which attracts bugs.
Due to the physics involved, LED lamps have what is called Instant On — unlike their incandescent and CFL counterparts. What this means is when you switch on an LED lamp, you get the full brightness of that light instantly. Incandescent lamps and CFLs experience significantly less lamp life from being switched on and off frequently, and CFLs in particular can experience greatly reduced lamp life if they are switched off and back on within 15 minutes of heating up.
The lighting industries as a whole are pushing LEDs to replace incandescent sources in a variety of applications, but the first time that LEDs actually did displace incandescent lamps was in vehicle brake lights, signal lights, and traffic lights – back in 1987!
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The light-emitting diode (LED) is one of today’s most energy-efficient and rapidly-developing lighting technologies. Quality LED light bulbs last longer, are more durable, and offer comparable or better light quality than other types of lighting.
LED is a highly energy efficient lighting technology, and has the potential to fundamentally change the future of lighting in the U.S. Residential LEDs — especially ENERGY STAR rated products — use at least 75 percent less energy, and last 25 times longer, than incandescent lighting.
Widespread use of LED lighting has the greatest potential impact on energy savings in the U.S. By 2027, widespread use of LEDs could save about 348 TWh (compared to no LED use) of electricity: This is the equivalent annual electrical output of 44 large electric power plants (1000 megawatts each), and a total savings of more than $30 billion at today’s electricity prices.
LED lighting is very different from other lighting sources such as incandescent bulbs and CFLs. Key differences include the following:
Light Source: LEDs are the size of a fleck of pepper, and a mix of red, green, and blue LEDs is typically used to make white light.
Direction: LEDs emit light in a specific direction, reducing the need for reflectors and diffusers that can trap light. This feature makes LEDs more efficient for many uses such as recessed downlights and task lighting. With other types of lighting, the light must be reflected to the desired direction and more than half of the light may never leave the fixture.
Heat: LEDs emit very little heat. In comparison, incandescent bulbs release 90 percent of their energy as heat and CFLs release about 80 percent of their energy as heat.
LED lighting is currently available in a wide variety of home and industrial products, and the list is growing every year. The rapid development of LED technology leads to more products and improved manufacturing efficiency, which also results in lower prices. Below are some of the most common types of LED products.
Industrial and Commercial Lighting
The high efficiency and directional nature of LEDs makes them ideal for many industrial uses. LEDs are increasingly common in street lights, parking garage lighting, walkways and other outdoor area lighting, refrigerated case lighting, modular lighting, and task lighting. See our industrial and commercial lighting case studies
Kitchen Under-Cabinet Lighting
Because LEDs are small and directional, they are ideal for lighting countertops for cooking and reading recipes. Since the color can appear more cool or blue than many prefer in a kitchen and there can be some excessive shadowing from some fixtures, it is important to compare products to find the best fixture for your space.
Recessed downlights are commonly used in residential kitchens, hallways, and bathrooms, and in a number of office and commercial settings. The Department of Energy estimates there are at least 500 million recessed downlights installed in U.S. homes, and more than 20 million are sold each year. LED technology can decrease downlight wattage by 75% or more.
LED Replacement Bulbs
With performance improvements and dropping prices, LED lamps can replace 40, 60, and even 75 watt incandescent bulbs. It’s important to read the lighting facts label to make sure the product is the right brightness and color for the intended location. When chosen carefully, LED replacement products are a far superior option.
LEDs consume far less electricity than incandescent bulbs, and decorative LED light strings, such as Christmas tree lights, are no different. Not only do LED holiday lights consume less electricity, they also have the following advantages:
Safer: LEDs are much cooler than incandescent lights, reducing the risk of combustion or burned fingers.
Sturdier: LEDs are made with epoxy lenses, not glass, and are much more resistant to breakage.
Longer lasting: The same LED string could still be in use 40 holiday seasons from now.
Easier to install: Up to 25 strings of LEDs can be connected end-to-end without overloading a wall socket.
Estimated cost of electricity to light a six-foot tree for 12 hours a day for 40 days
Estimated cost* of buying and operating lights for 10 holiday seasons
*Assumes 50 C-9 bulbs and 200 mini-lights per tree, with electricity at $0.119 per kilowatt-hour (kWh) (AEO 2012 Residential Average). Prices of lights based on quoted prices for low volume purchases from major home improvement retailers. All costs have been discounted at an annual rate of 5.6 percent. Life span assumed to be three seasons (1,500 hours) for non-LED lights.