I am current haveing issues with my furncae the issue was that during heat cycle when main blower would come on it was causeing the center flame tube to flutter i knew that it had something to do with the heat exchanger. After trying to find any damage cracks and rust perforation i could not find a thing so i had a HVAC tech come out during his inspection of the flame tube that was haveing issues there are 2-small holes/perforations and the end of the flame tube the furnace does not roll out the flame and the noise it is makeing is minimal. Upon his co2 leak test there was none coming from the vent with this being said is it still possible to use my furnace another month or 2 untill i can afford a replacemant during summer thank you.
No it will cause the flame to burn yellow and soot up and give off co2 replace now .
It sounds like a cracked heat exchanger. First do you have a carbon monoxide detector second what is the model # and brand
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