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This genuine OEM air pressure switch (part 20197308) is a direct-fit replacement for the AMV91155DXBA modulating gas furnace and other compatible Goodman and Amana models. Rated at a sensitive -0.10" WC set point, it proves low-fire draft during the furnace's modulating heat stages, confirming adequate venting before ignition is permitted. When this switch drifts or fails, the furnace may fail to start in low fire or post pressure-switch fault codes.
Our OEM switch is factory-calibrated to the precise -0.10" set point required for correct modulating operation. Generic switches often can't match such a low, tight trip pressure, leading to nuisance lockouts. For multi-stage/modulating furnaces, OEM is strongly recommended.
Easy–Moderate. Two spade terminals, one or two screws, and a hose to the inducer tap. Most installs take 20–30 minutes. Disconnect power before servicing.