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Chimney sizing

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blk_gold
blk_gold Member Posts: 2
in THE MAIN WALL
How do you determine the size of a chimney that has two gas fired appliances exaushting in the winter and one in the summer. Would a properly sized " winter" chimney be over sized in the summer??

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  • Henry
    Henry Member Posts: 998
    Sizing

    You can look up the proper chimney sizing in your gas code: NFPA54 in the US and B149 in Canada. Chimneys and vents are always sized for the combined appliances that vent into them.
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