@love2hvac: Replying to @unclenate704 @Mr. Roger I gotta go with Nate on this one. most manufactures want a minimum of 11"W. C. inlet pressure, while carrier wanted a minimum of 12" w. c. always RTFM of the specific furnace conversion kit used. I always recommend a combustion analysis class when working on any furnace. HVAC E learn network has some affordable online classes and National Comfort Institute has a deem 3 day in person class. For my Texas people the retail road commission requires a certification/lisnese to install or service gas appliances. hopefully that helps! #furnace #propaneconversion #combustionanalysis #hvac

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