Light Bulbs: Know the Different Types
Each light bulb has its pros and cons and certain bulbs work better in different spaces of a home. Take a deeper look at the different light bulbs to see where each should be used.
New Front Label
The Federal Trade Commission is requiring new labeling information on light bulb packages starting January 1, 2012, to aid consumers in making choices on light bulbs based on lumens and energy efficiency versus wattage for incandescent bulbs. The front of the new light bulb package must display the lumens and the estimated yearly energy cost. Image courtesy of FTC
New Back Label
The new label on the back of every light bulb package, beginning January 1, 2012, will display a Lighting Facts Per Bulb information box, similar to the Nutrition Facts box on food. The Lighting Facts box must include brightness in lumens, estimated yearly energy cost, life expectancy, light appearance (also known as the correlated color temperature) and energy used. Image courtesy of FTC
Start Thinking Lumens
With the planned phaseout of the incandescent light bulb starting January 1, 2012, as required by the Energy Independence and Security Act, consumers need to start looking for light bulb choices that provide similar light output (lumens) to the incandescent they may be replacing.
Current Package Labeling: Incandescent
Current labeling already helps make the switch from thinking in watts to thinking in lumens. The next three slides show three packages for three different types of A19-shaped light bulbs — incandescent, LED and CFL — that all produce approximately the same lumens. This 40-watt incandescent bulb equals 500 lumens. Photo: Inset from Philips light bulb package.
Incandescent is the most commonly used light bulb and usually the least expensive. This type of light has a warm, inviting quality and is very complimentary to skin tones and psychologically appealing. Incandescent bulbs usually last between 700 to 1,000 hours and can be used with a dimmer; however, they're not as energy efficient as other options.
Halogen bulbs are a variation of incandescent. They give the closest approximation of natural daylight, known as "white light." Colors appear sharper under halogen light and the bulbs can be dimmed. They're a little more energy efficient than incandescent bulbs, but are more expensive and burn at a higher temperature. Most often halogen bulbs are used in under-cabinet lighting, pendant lights and recessed cans. Remember not to use bare hands when changing the halogen bulb. The smallest residue of oil from a human hand can rub off on the bulb, creating an atmosphere where the bulb warms too quickly when the lamp is turned on, which can cause the bulb to explode.
Energy Saving Lighting Tips 02:07
The typical fluorescent gives a flat, cold light, often bluish and harsh. It is a daylight-equivalent and cannot be put on a dimmer. There are many types of fluorescents on the market: warm ones, cool ones and special-colored ones, and they typically produce more light and last longer than incandescent. Fluorescent bulbs work well to light large areas like basements or attics.
Compact fluorescent bulbs (CFLs) consume a quarter of the energy that incandescent bulbs do and last 10 times longer. Unlike the old fluorescent lights, CFLs are quiet, instant-on and have warmer, color-corrected tones. They can be used anywhere you would use a typical incandescent light bulb. CFLs contain trace amounts of mercury, a harmful substance. Although the bulbs contain far less mercury than other household items, care needs to be taken to prevent breakage. Also, when CFLs burn out, they should be recycled.
LED, which stands for "light-emitting diode," is a lighting technology that is long-lasting and extremely energy-efficient, but they're not ready to supplant all other bulbs yet. For one, they provide only directional light, not diffused light, making them ideal for under-counter task lighting, but not general room illumination. To overcome this, new models consist of large arrays of LEDs clustered together, but at prices from five to six times higher than CFLs, the bulbs are not for everybody.