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Maintain or Replace – be Energy Efficient or not – continuing the debate

So the other day my wife told me the water in the shower didn’t seem as hot as it normally does. “Maybe something wrong with the water heater?” she said. I did all the normal checks: no water on the basement floor, pilot is lit, check, check. All seems ok.

We happened to go to Home Depot to buy some other stuff, but we ran into the water heater guy.  His diagnosis: water heater going bad. (Full admission, it is 11 years old)

I kind of buy his story, it makes sense. Here is an appliance that is 11 years old that I never maintained. Expected life is 10 years, so I am already plus one, right? And maybe a new one would be more efficient, right?

But isn’t that the sort of internal argument manufacturers go through every day? Sunk cost (what they already paid for) vs. Maintenance vs. Replacement? How efficient are the machines you bought 10 or 15 years ago? How do you know? How much does it cost you for a shutdown for two to three days while you secure a replacement machine and install it? Wouldn’t that information be valuable to you if it was visible? How do you know?

Energy management/awareness is certainly a big part of this sustainability issue. Check out this video from Chet:

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