Natural Gas Measured

Old 01-23-18, 05:53 AM
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Join Date: Dec 2009
Location: Georgia
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Natural Gas Measured

A natural gas supplier rep told me that he measured 0.4 ppm of natural gas coming from my outside furnace exhaust. He found none in my in-house vents. He suggested that the furnace be cleaned my a furnace service technician. The technician found nothing wrong with the operation and no gas smell. He did not understand the gas reps measurement or the cause. Is this something that I should be further concerned with?
Old 01-27-18, 07:45 PM
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Join Date: Mar 2004
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was that test with the furnace running or not?

very tiny chance you have a gas valve with a small leak, passing tiny amount of gas while the unit isn't running.

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