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The Goodman 20197310 Pressure Switch is a genuine OEM safety control designed for the Amana/Goodman AMH950904CXAB gas furnace and compatible models. This normally open (NO) switch is calibrated to a -.60" water column negative-pressure setpoint. It proves proper draft-inducer airflow before allowing the ignition sequence to begin, protecting your furnace and home from unsafe combustion conditions.
The genuine OEM 20197310 is factory-calibrated to the exact setpoint your furnace's control board expects, ensuring reliable proving and no nuisance lockouts. Aftermarket switches often drift from spec, leading to intermittent no-heat calls. When your comfort and combustion safety are on the line, the OEM part is the smart choice.
Replacement requires shutting off power and gas, removing the access panel, transferring the silicone pressure tubing, and swapping the two spade terminals. Most experienced DIYers complete the job in 20–30 minutes. If you are not comfortable working around gas appliances, we recommend a licensed HVAC technician.