Lighting in our homes counts for 1/4 of our energy bills. The type of light bulb we use at home can play a big role in just how much- or how little- we pay each month. So what kind do you use? What kind should you use? And what is the difference between them all?
Incandescent Light Bulbs
Incandescent Light Bulbs are the most inefficient, and as a result, they’re also the ones that will cost you the most. At $0.10 per kilowatt hour, running for 8 hours a day, just one 100-watt incandescent bulb will cost over $22 more than a 25-watt CFL bulb per year. Incandescent bulbs also require more frequent replacing- so you’ll be spending more on light bulbs, too, as the average lifespan of an incandescent bulb is 600-700 hours.
With this information, it’s no surprise that incandescent bulbs are being phased out and quickly becoming a thing of the past!
Compact Fluorescent Light Bulbs
Compact Fluorescent Light Bulbs (CFL) use 25% of the electricity of a comparable incandescent bulb; however, they aren’t as energy efficient as LEDs. Their lifespan also greatly exceeds those of incandescent bulbs; where an incandescent bulb will last 600-700 hours, CFL bulbs will last 7,000-10,000 hours, adding to a household’s savings.
The disadvantage of CFL lights is that they contain mercury inside the bulb, which can cause problems if the bulb breaks. As a result of this mercury, CFL lights are deemed to be Household Hazardous Waste, and need to be disposed of with other HHW products, like oil paint and batteries.
Light-Emitting Diode Bulbs (LED) last a lot longer than other lightbulbs; their average lifetime is 50,000- 100,000 hours! As a result, even though these are often more expensive at the time of purchase, fewer bulbs are needed over time. Fortunately, as manufacturing technology advances, the prices for these bulbs will likely start to lower.
LEDs use very little energy, and do not contain toxic chemicals, so they are not considered household hazardous waste. One 25W LED costs $30, but will last 15-20 years.
LEDs and CFLs are becoming more and more popular when individuals are looking to change their bulbs. Their impressive lifetime and their reduced environmental effects also play a major role in the switch from incandescents to CFLs and LEDs.