natural gas pot furnace flue gas ingredient ratio

Combustion Air - Natural Gas Efficiency

The combustion of all fuels requires oxygen and LOTS of it. Natural gas requires a minimum of 10 parts air for 1 part natural gas to support combustion. ... With a 10:1 ratio it takes at least 1000 cubic feet of air to burn every 100000 BTUs (1 CCF) that goes through a furnace. ... two-hose design provides combustion air for the gas furnace ...

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