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Odor of smoke from gas furnace
jksk
Member Posts: 1
in Gas Heating
Hi, My 2 year old Lennox high efficiency gas furnace emits a odor of smoke whenever heat is no. It's the 3rd month into heating season. So I am sure it is not odor from burning dust. There is no odor when only hrv and fan is on. We change filter every month. The heat exchanger. burner chamber and ducts looks clean. Flame looks fine. After a few service calls, still has no clue. Also, Gas company found no gas leak. No co detected in living space. Does anybody know what could cause smoke odor in high efficiency gas Furnace ? Thank you very much!
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