Air Sealing and the CAZ
February 25, 2013
After I described how air can get sucked down the chimney and vent connector and flue, and out the draft diverter of the gas water heater, and into the basement, the mother, who was now wondering if this was the cause of her child’s sickness, said to me, “Why doesn’t everyone know this? Why aren’t the public health organizations educating everyone about this danger?” I replied, “Indeed.”
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