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The Goodman 0128F00006 chimney transition bottom is a genuine OEM venting component for the Goodman/Amana ADVC80805CNBB gas furnace. This transition piece connects the furnace's induced-draft flue outlet to the chimney/vent connector, channeling combustion byproducts safely out of the home. A properly fitted transition maintains draft, prevents flue-gas leakage, and helps the pressure switch read correctly during the ignition sequence.
The OEM Goodman 0128F00006 is dimensionally matched to the factory flue collar and cabinet opening, ensuring a leak-free draft path. Generic or fabricated transitions can introduce gaps that leak flue gases or disrupt draft-inducer pressure, risking lockouts or unsafe operation. OEM is recommended for any combustion-venting part.
Moderate — requires disconnecting the vent connector, sealing joints per code, and verifying no flue-gas leakage after startup. Because this affects combustion venting and carbon-monoxide safety, installation by a licensed HVAC technician is strongly advised. Confirm the part number and fit before installing.