Amana-Goodman B1370209 Pressure Switch

The Amana-Goodman B1370209 Pressure Switch is a critical OEM furnace safety component engineered for high-efficiency 2-stage furnace systems. This dual-stage vacuum switch functions as a fail-safe, verifying that the draft inducer motor is generating the precise static pressure required to vent combustion gases before the ignition sequence initiates. Designed to replace legacy part number 9371VO-HD-0030, this switch ensures that the burner only fires when specific vacuum thresholds—typically ranging between -0.30 to -0.50 in. W.C.—are met for both low and high-fire sequences.

For technicians troubleshooting Goodman, Amana, or Janitrol furnaces, the B1370209 offers a direct-fit solution that eliminates the need for bracket modifications or field calibration. Its factory-preset setpoints provide reliable sensing of draft pressure, preventing the unit from cycling on a pressure switch stuck open or stuck closed fault code. Constructed with durable diaphragms to withstand heat and vibration, this genuine Amana Goodman replacement part maintains the integrity of the original equipment manufacturer’s safety string.

Key Benefits for HVAC Professionals

• Direct OEM Replacement: Replaces 9371VO-HD-0030 with no modifications required, ensuring a rapid plug-and-play installation.
• Enhanced System Safety: Specifically calibrated for 2-stage gas furnaces to monitor variable inducer fan vacuum levels.
• Wide Compatibility: Fits a broad range of Amana and Goodman gas furnaces, providing a versatile solution for service trucks.
• Robust Construction: Engineered to resist fatigue from frequent pressure cycling and high-temperature cabinet environments.
• Precision Accuracy: Factory-set at -0.30 to -0.50 in. W.C. to prevent nuisance tripping and ensure reliable ignition.

Common Questions

How do I know if the B1370209 pressure switch is bad?
If your furnace displays a diagnostic code for "Pressure Switch Stuck Open," check for obstructed flue vent pipes or a failing inducer motor first. If the vacuum levels are within spec but the switch fails to close, a B1370209 replacement is necessary.

Can I use a single-stage switch to replace this 2-stage model?
No. Two-stage furnaces require specific pressure thresholds for different firing rates. Using a single-stage switch will result in system errors and unsafe operating conditions.

Does this switch require field calibration?
As a genuine OEM part, this Goodman furnace pressure switch comes factory-calibrated to specific tolerances. Attempting to adjust the setpoint in the field is not recommended and can compromise safety.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.