CO poisoning
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Thread: CO poisoning

  1. #1
    Join Date
    May 2005
    Posts
    39

    Question

    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
    Posts
    6,383

  3. #3
    Join Date
    Mar 2005
    Posts
    997
    9 PPM for 8 hr expos time ASHRAE

  4. #4
    Join Date
    Aug 2003
    Location
    Central Kentucky
    Posts
    6,247
    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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