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The Goodman 20214203 is a factory OEM condensate drain angle engineered for the GMH950904CXAC 96% AFUE two-stage gas furnace. This molded fitting routes condensate away from the secondary heat exchanger and collector box so acidic water drains cleanly instead of pooling inside the cabinet. A cracked, brittle, or clogged drain angle is a common cause of furnace lockouts, water leaks, and pressure-switch faults on high-efficiency units.
The genuine Goodman part matches the exact port geometry and slip-fit dimensions of your collector box, so it seals without leaks or adapters. Generic universal drain fittings often require trimming and may not seat correctly, risking condensate leaks and nuisance trips. For a critical drainage component we recommend the OEM part.
Easy (1/5). No tools or minimal hand tools required. Cut power, disconnect the drain line, swap the fitting, and reconnect. Most homeowners can complete this in under 15 minutes. Always turn off gas and power before servicing.