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bodhipooh t1_j56xexg wrote

Reply to comment by pixel_of_moral_decay in Do you think a $200 electric bill for a 2 bedroom is too much? by TechnologyPale329

You always bring up that point, which ignores all the heat those incandescent lights give off. So, on a hot summer day, you are running MORE a/c to undo the added heat all those bulbs add to the ambient air. The math of comparing the usage of 14W bulbs to 60W bulbs yields an incomplete and erroneous take if you don't account for all the other energy being spent.

I can tell you, without any sort of doubt, that I was saving a good chunk of money after switching all bulbs to LEDs. Enough that the cost of replacing bulbs (before LEDs became as cheap as they are today) was recouped within two or three months. And, those same bulbs are still going strong today, which is another upside. Heck, some newer bulbs I bought recently may quite literally outlive me.

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pixel_of_moral_decay t1_j56ydpd wrote

Even if it were 0% efficiency 60W is 60W of heat. That’s negligible. A fresh cup of coffee on your desk is heating the room up more.

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bodhipooh t1_j575cq0 wrote

You are really missing the math on this one. It is 60 W spent to power the bulb, with about 95% of that radiated as heat. You combine that several times over for the amount of bulbs turned on at any given time, and then you have to remove that heat from the ambient temperature by using MORE energy to power the AC. In essence, it is x2 for whatever bulb wattage. In new construction luxury buildings, where recessed lighting are common, and multiples of those, you could be looking at 6 - 10 bulbs turned on at once.

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