econ AAGZ idea to save lives subject HVAC
if you go into a store and buy HVAC supplies, ducting, flu, vents, etc.
their may be dangers you are not aware of
( I do not know how accurate this information is,
but it will give you questions you can ask an expert ... ??? )
http://www.checkthishouse.com/2418/gas-appliance-chimney-placement-and-termination.html
you may not find any subject books or warnings
here are some ideas for you
I am a beginner at HVAC ducts and vents so
for correct answers you need to contact





exhaust vents city county state law 010512
http://www.archive.org/stream/gov.wa.plumbing/wa_plumbing_djvu.txt
http://www.iccsafe.org/cs/PMG/Pages/default.aspx
https://fortress.wa.gov/ga/apps/sbcc/File.ashx?cid=224
http://www.iccsafe.org/Store/Pages/Product.aspx?id=3100X09
http://apps.leg.wa.gov/wac/default.aspx?cite=51
http://apps.leg.wa.gov/wac/default.aspx?cite=51-51
http://apps.leg.wa.gov/wac/default.aspx?cite=51-51-1507
http://www.csia.org/HomeownerResources/ChimneySafetyInfo/tabid/112/Default.aspx