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The Goodman 10254303 rubber coupling forms a flexible, watertight connection between drain, condensate, or vent components on the AMVC950704CXAA furnace. Rubber couplings harden, crack, and lose their seal with age and heat cycling, causing condensate leaks, pressure-switch faults, or air infiltration. Replacing this inexpensive part restores a tight seal and prevents water damage around the furnace.
The genuine Goodman OEM coupling is sized to the exact inside and outside diameters of the mating pipes for a leak-free press fit. Generic couplings and hardware-store fittings may be a loose or overtight match, leading to slow leaks or split rubber. OEM ensures the correct diameter, clamp fit, and heat rating.
Easy (DIY-friendly, ~10 minutes). Power down the furnace, loosen or slide off the old coupling, clean the pipe ends, and press the new coupling into place (tighten any clamps evenly). No special tools required. Check for leaks after restarting the furnace and observing a full heating cycle.