Yearly Cost of Using a LED Light Bulb

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The cost of using a 40 watt equivalent light bulb for one year at 3 hours per day is calculated. This is a nice example of the use of the factor label method of doing calculations.
  1. Charles Marzzacco
  2. Energy Costs
  3. Factor label method
  4. LED Bulbs
  5. Incandescent Light Bulbs
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most led bulbs do not last nowhere near what they claim. We are replacing about 2000 hours or less, they burn out flicker, or go out intermitently, then with electric heat, you have to replace the cost of heat loss from regular bulb.

MrDynamitd
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problem is pay more for the led up front, and its a chunk of plastic which goes in the landfill? Also, ive had many led bulbs go bad after a few months or a year or a few years, so for me they do not last no 20 years. The old fashion bulbs are better over all for cost and pollution when you factor in the plastic and energy to make them

spacecatboy