tir38

I am slowly upgrading the incandescent light bulbs in my house with more efficient compact fluorescent light bulbs. However the higher purchase price of the new bulbs has me wondering if they are actually “worth it.” I also thought whether an even more efficient type of bulb, perhaps an LED light bulb, would be better.

So, I set out to determine a value which would best quantify the “worth” of different bulbs and rank each based on this value.
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