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jeffkaw
smell from furance exhaust vent

While high efficiency furance is running a natural gas smell is emitted with the exhaust. At times I can see gas vapors also, is this normal? If not what could be causing it?

MLB Construction
Re: smell from furance exhaust vent

that's perfectly normal. it's called combustion exhaust. that's the reason that these vents are not allowed within a certain distance of a window. you're smelling the exhaust of burnt gas which is full of carbon monoxide.

bill
Re: smell from furance exhaust vent
MLB Construction wrote:

that's perfectly normal. it's called combustion exhaust. that's the reason that these vents are not allowed within a certain distance of a window. you're smelling the exhaust of burnt gas which is full of carbon monoxide.

Actually it is mostly water vapour and carbon dioxide with a very little carbon monoxide and a very small part sulfer dioxide.

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