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coast of Maine | Bill,I do not know of any new ventless that are supposed to be yellow.It usually means it is not burning correctly.Dirty air tube,poor regulator etc.,,The only not blue really that I have seen are the fake log type but vented.These get a glow from the heated stones or fake logs being red hot.Maybe you are seeing the ads for Blue Flame heaters,,same color flames as others,,sort of like ads for Blue Def..all the same. | |
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propane heater question
