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Get the book, it's awesome:


I had oil fired steam heat (live around Boston). Back when heating oil hit $5 / gallon, I got rid of it. It was costing me $3800 / year, but the efficient gas furnace that replaced it costs $700 / year. I'm sure this will only last as long as the fracking boom, but it definitely already paid for the installation.

So now my most expensive utility is water ($1700 / year).

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