Quote:
Originally Posted by dpmacv
That's about it, although a second vent on the other side seems like a good idea to provide cross ventilation.
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Good idea, If your has house central air or room a\c units and your house is closed up (windows,doors)without a second ventilation
source the attic fan will cause a down draft in the chimney and cause
havoc on your boiler or water heater. Possibly carbon monoxide poisioning in exterme cases.
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