"dbomke" wrote in
m:

I have natural gas available and am
trying to decide between using one or two of the ventless "blue flame"
gas units or a single ceiling mounted vented gas furnace.

Reminds me of my parents' house in Holland. We/they had several natural
gas fired heaters that sucked in outside air to feed the burners and vented
the exhaust outside through a single coaxial opening totaling some 6"
(guessing). Worked fine, even in brick housing. Isn't there something
like that here in the US?

--
Best regards
Han
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