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The Goodman 20197308 Air Pressure Switch is a genuine OEM safety control calibrated at -.10 in. WC (normally open) for the Amana/Goodman AMVC950704CXAB modulating variable-speed furnace. It confirms proper inducer draft and venting before the ignition sequence is allowed to proceed, protecting the home from unsafe combustion and blocked-flue conditions. A drifting or stuck switch is a leading cause of no-heat calls and inducer lockout codes.
Genuine OEM guarantees the exact -.10" WC trip point, port size, and bracket footprint required by this furnace's control board. Generic switches with approximate set points frequently short-cycle or fail to prove draft, leaving the furnace locked out. For a code-correct, reliable repair, use the factory-specified switch.
Easy (2/5) — About 15 minutes. Cut power, label and remove the two spade wire terminals, disconnect the rubber pressure tube, unscrew the mounting bracket, and reverse for the new switch. Verify the hose is free of condensate and seated fully. No calibration needed — the switch is factory-set.