Amana-Goodman B1370156 Pressure Switch

The Amana-Goodman B1370156 Pressure Switch is a critical safety component designed for specific Goodman and Amana gas furnace families, including the GUN series. This OEM furnace pressure switch features a pre-calibrated set point of -1.40" WC (water column), ensuring the secondary heat exchanger and venting system maintain proper negative pressure before allowing the ignition sequence to continue. Built with a single-pole single-throw (SPST) configuration, it acts as a normally open switch that closes only when the draft inducer motor provides sufficient suction through the integrated 1/4" barb connection.

For field technicians, this part serves as a direct cross for the B1370107, featuring a robust brass housing and diaphragm assembly that resists environmental stressors and sensor drift. When troubleshooting pressure switch stuck open codes or intermittent furnace lockouts, this 15 amp 120VAC rated component ensures reliable electrical continuity. Maintaining correct HVAC pressure switch calibration is vital; the B1370156 is engineered to detect precise fluctuations in the induced draft, protecting against flue obstructions or collector box blockages that could lead to combustion issues.

Key Benefits

• OEM Precision: Genuine Amana-Goodman replacement part ensures exact -1.40" WC set point for factory-spec safety.
• Durable Construction: Features brass housing and diaphragm for superior longevity over plastic aftermarket alternatives.
• Secure Interfacing: Standard 1/4" barb connection provides a tight seal for vacuum lines, preventing false 24V signal interruptions.
• High Compatibility: Direct replacement for older metallic switches and a verified furnace air pressure switch for GUN induction systems.

Common Questions

Checking a Goodman furnace pressure switch: Verify the inducer motor is pulling a draft higher than -1.40" WC using a manometer. If the suction is adequate but the SPST switch remains open, check for moisture in the tubing or a ruptured internal diaphragm.

Replacing a B1370107 with a B1370156: Yes, this is the current manufacturer-designated replacement. Ensure the switch is mounted in the correct vertical orientation to prevent gravity from impacting diaphragm movement.

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.