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The Goodman 0128F00006 Chimney Transition (Bottom) is a genuine OEM vent component for the ADSS801005CXAA 80% AFUE gas furnace and compatible Goodman/Amana models. This sheet-metal transition connects the furnace flue collar to the vent pipe, establishing the correct draft path for combustion byproducts. A damaged, corroded, or mismatched transition can leak flue gas, disrupt draft, and cause the pressure/limit safeties to trip.
The OEM transition is stamped to match the exact flue collar diameter and geometry of your furnace, ensuring a tight, draft-correct connection. A universal fitting may require field modification and risks leaks at the seams. For any component carrying combustion gases, OEM fit is worth the small premium.
Moderate — Requires disconnecting the existing vent connector, fitting the new transition, and sealing/screwing the joints per code. Because it involves the flue, a combustion and draft check is recommended after install. Homeowners uncomfortable with venting work should use a licensed technician.
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