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Glass discoloration?


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When that gas burns off 70% of the exhaust is water and the rest is particles of sulfur and other junk. When you start up that stove cold the sudden burst of moisture inside the stove in the exhaust cools to dew point and condenses on the glass door. It takes a few minutes for the stove to warm up enough to evaporate that moisture. In the meantime, sulfur particles in the air cling to the moisture and remain after the water evaporates. Over time, the buildup clouds the glass and if it is ignored long enough the sulfur will eventually etch the glass. Part of the annual maintenance on that stove is to clean that glass.



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