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Thread: CO poisoning

  1. #1
    Join Date
    May 2005
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    Does anyone know what the CO ppm limit is when a contractor should tell the homeowner to shut the furnace down? I'm from the mid-west and was told to call the local fire dept and they told me to call the gas company. The gas company didn't get me anywhere. I have a CO tester and I know that 100 ppm is where it starts getting dangerous but is there some rule to go by that a local gas company will red tag a furnace???

  2. #2
    Join Date
    Apr 2003
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  3. #3
    Join Date
    Mar 2005
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    9 PPM for 8 hr expos time ASHRAE

  4. #4
    Join Date
    Aug 2003
    Central Kentucky
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    Are you looking for maximum CO in the ambient air or maximum CO in the flue?

    The only acceptable ambient CO levels from a vented appliance are 0 PPM.
    Have you set up a Google alert for Carbon Monoxide yet?
    Click here to find out how.

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