Let’s take a closer look at the lighting facts label:
•Brightness: What type of cereal…umm light bulb is it? You will have to rely on the advertising on the box to get that information. Wondering how much light the lumens are? A simple way is to remember the 100W incandescent number (1490 lumens), you can then do comparisons from there.
•Energy cost: A bit like figuring out the calories per serving. The energy cost listed on the label is based on 3 hours per day at 11-cents kWh (kilowatt hour). Energy costs vary depending on your location, rates and usage. For example here in Portland, today’s kWh costs are: on-peak 12.581-cents, mid-peak 7.222-cents and off-peak 4.195-cents. The charge varies depending on the time of day the power is used.
•Life expectancy: This one is like the daily values based on a 2000 calorie diet. Based on 3 hours a day…really, who burns their lights only 3 hours a day? You may want use a calculator to figure a more accurate life expectancy by plugging in the real amount of time that your lights are used.
•Light appearance: This is about color and color is always a personal preference. Light color is expressed in kelvin temperature; the lower the number the more yellow the light. For example: Edison bulbs are 2200K close to candle light, 2700K is incandescent, 3000K is halogen. Just watch those that don’t give you the numbers; soft white is close to halogen whereas daylight is bluer, more like 4000K.
•Wattage: This part of the label is fairly straight forward. It is the amount of energy used by the bulb. The lower the number the fewer the calories…oops, that should be watts!