Send your question to Umbra! Q. We recently bought an older house that has an older steam boiler. Best guess is that it's from the late ‘60s or early ‘70s. We don't have the funds to completely redo our heating system, so we're sticking with the steam boiler for now. What I'm wondering is this: Is it more efficient to turn down the heat at night and when we're gone during the day, or to leave it running at the same temp consistently? I've been told that with steam boilers it takes so much energy to raise the temperature that …
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Are there two different versions of environmentalism, one “white,” one “black”?
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