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The Goodman 20197308 Pressure Switch is a genuine OEM safety control engineered as a direct replacement for the Goodman/Amana AMH950453BXAF gas furnace. This single-pole switch is calibrated to a -.10 inch water column (WC), normally open set point, monitoring inducer draft to verify proper venting before the ignition sequence begins. A failing pressure switch is a common cause of furnaces that lock out, short-cycle, or throw draft/flame-proving fault codes.
This is a genuine OEM Goodman component, factory-calibrated to the exact trip point your furnace's control board expects. Generic universal switches can be sourced cheaper but often carry a different actuation pressure or hose barb orientation, leading to nuisance lockouts. For a safety-critical control, we recommend OEM.
Easy–Moderate — Typically a 15–20 minute repair: disconnect power, transfer the sensing hose(s), swap the two spade terminals, and reinstall. No special tools required. A manometer is recommended to confirm actual draft pressure against the switch rating. Always shut off gas and electrical power before servicing.