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This genuine OEM Goodman vertical condensate drain pan (part #B1756017L) is the factory-molded pan for ARUF036 and ARUF042 air handlers and other compatible vertical Goodman/Amana coils. It collects condensate from the evaporator coil and channels it to the drain line. Cracked, warped, or corroded pans are a leading cause of water leaks, overflow switch trips, and ceiling/floor damage — a fresh OEM pan restores proper drainage and the correct slope to the drain port.
The OEM pan is molded to the exact coil footprint with the correct drain-port location and slope, so condensate flows out instead of pooling. Universal pans rarely match the cabinet dimensions and can leave standing water that breeds mold and trips the safety float. For reliable drainage, the factory pan is the correct fit.
Moderate (3/5). Requires pulling the coil/blower section to access and swap the pan, then re-sealing the drain connection. An experienced DIYer can manage it; many homeowners prefer a tech. Power off the unit and have a wet/dry vac ready for residual water.