by Shane Henson — September 3, 2012—Facilities managers wanting to get the best bulb for their buck can learn about the differences between traditional incandescent bulbs, light-emitting diodes (LEDs), and compact fluorescent lamps (CFLs) in a new report released by Consumer Reports, the world’s largest independent product-testing organization.
According to the report, while facilities managers and regular consumers won’t save money by switching from CFLs to LEDs until LED prices drop, those replacing incandescent bulbs may still want to consider LEDs, as they use about 75 percent less energy, brighten instantly, and are not affected by frequently turning them on and off. Consumer Reports said it found good choices that cost $25 to $60. And even at $25 per bulb, the best LEDs can save consumers about $130 over their 23-year life-span.
Consumer Reports’ tests also found plenty of fine, inexpensive CFLs from EcoSmart, Feit, GE, Sylvania, and Utilitech ranging in price from $1.25 to $18.00. Overall, switching to CFLs can save consumers around $60 in energy costs and replacement lightbulbs when replacing a 60-watt incandescent bulb, the organization says.
In the report, Consumer Reports also identified four lightbulb letdowns and ways to prevent them:
- Dim bulbs: Opt for more lumens. Check the Lighting Facts label on the packages of CFLs and LEDs for the number of lumens. The higher the lumens, the brighter the bulb. When replacing a 60-watt incandescent, look for an energy-saving bulb with at least 800 lumens, and 1,100 lumens or more for a 75-watt replacement. Watts tell you how much electricity the bulb uses, so choose one with enough lumens and the lowest wattage.
- Weird light color: Choose the right Kelvin (K) number. Light color is expressed by its Kelvin temperature—the higher the Kelvin number, the cooler the light. Those wanting to trim electric bills who prefer the warm light of an incandescent should choose a CFL or LED marked 2700 K or so on the Lighting Facts label. At 3000 K the light is whiter, like a halogen bulb, and it’s cool and bright white at 3500 K to 4100 K. For bluer light, buy bulbs marked 5000 K to 6500 K.
- Unflattering light: Choose bulbs with a higher color rendering index (CRI). When the colors of things look off, find out the color rendering index of the lightbulbs. CRI indicates how accurately a lightbulb displays colors, so the higher the better. Incandescent bulbs are at or near 100; most CFLs and LEDs Consumer Reports tested are in the low-to-mid 80s. CRI isn’t on the Lighting Facts label, but may appear elsewhere on the package and some online retailers note it.
- Early burnout: Return the bulb to the retailer or contact the manufacturer. You may need the model number or UPC and a receipt. And, when buying replacements, be sure the bulbs can be used in existing fixtures. Putting a CFL or LED in a fixture it is not meant for can shorten its life.
