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The Goodman 20197308 is a genuine OEM single-stage normally-open (NO) pressure switch designed for the AMV90453BXBB variable-speed condensing furnace. It verifies proper draft and venting pressure before allowing the ignition sequence, and is a critical safety interlock that helps prevent operation under blocked-vent or condensate-backup conditions.
The OEM 20197308 arrives factory-calibrated to the precise -.10" trip point and uses the correct terminal spacing and sensing-port design for the AMV90453BXBB. Generic switches with an approximate rating can trip early or late, causing nuisance lockouts or bypassing a safety condition. For a listed safety control, OEM is the correct choice.
Moderate (2/5). Disconnect power, move the sensing tube and spade terminals to the new switch, and mount to the existing bracket. Verify correct trip point orientation. Professional installation recommended.