What type of "digital CO alarm" are you using to take readings? Is this an actual instant-detection commercial meter? Or are you trying to use a homeowner safety alarm as a diagnostic tool?
Did you actually look at the heat exchanger?
You will not necessarily get an instant headache from CO like you do from diesel exhaust. The buildup could be much slower than that, even from a badly leaking exchanger. Also, gas is much cleaner burning than diesel, so there is no comparison between the two.
This is NOT an area where fixes should be conducted by amateurs. If TWO services said the exchanger is leaking, I would tend to believe it. At the very least, I'd want to watch while they were taking readings to verify there was acutally CO being put into the inside air by a leaking exchanger.
And then why did they say the exchanger cannot be replace?
I'm not against fixing what can be fixed, but messing with CO is messing with death. This is NOT an area where a guy wants to go against the professionals and be wrong.
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Today's Featured Article - Tractor Profile: Ferguson TO-20 - by Staff. When the infamous "Handshake Agreement" between Henry Ford and Harry Ferguson fell by the wayside (that's a story in itself), Harry Ferguson quickly set up manufacturing plants for a United States version of his English TE-20. The TO-20 was relatively the same as the TE-20 except utilized some different casting materials and had a US-style electrical system. The TO-20 was a dead ringer for the Ford 9N and 2N models and they say that Ferguson did this on purpose when the Handshake Agreement wen
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