Amana-Goodman B1370126 Pressure Switch

The Amana-Goodman B1370126 is a critical OEM replacement air pressure switch designed for Goodman, Amana, and Janitrol furnace systems. This normally open (NO) safety component features a precise setpoint of -0.40" WC (water column), ensuring the inducer motor creates sufficient draft before allowing the ignition sequence to proceed. Engineered to monitor negative pressure within the combustion chamber, it prevents the furnace from operating under hazardous conditions such as blocked vents or inducer assembly failure. As a genuine factory-sealed part, it offers exact compatibility with popular models like the GMP, GDPI, and GUP series, eliminating the performance inconsistencies often found with universal alternatives. Utilizing high-grade materials for the internal diaphragm, this switch maintains accuracy across thousands of cycles, restoring system safety and peak HVAC efficiency.

Key Benefits:

• OEM Precision: Guaranteed -0.40" WC calibration for reliable safety circuit closure.
• Enhanced Safety: Immediately interrupts the heating cycle if venting or exhaust restrictions are detected.
• Wide Compatibility: Direct replacement for Amana-Goodman part numbers including B13701-26 and 9371VO-HS-0001.
• Rugged Construction: Designed to withstand high-temperature environments near the draft inducer housing.
• Simplified Install: Features standard male spade terminals for quick wiring to the control board.

Common Questions:

What are the symptoms of a failing B1370126 pressure switch?
Technicians typically look for furnace short-cycling, the inducer motor running without ignition, or diagnostic LED codes indicating a "switch stuck open" error. If the diaphragm is ruptured, the switch will fail to close even with proper vacuum.

Will this switch fix a "pressure switch open" fault code?
While a new B1370126 fixes a defective switch, the fault code can also be caused by clogged condensate drains, cracked pressure tubing, or flue obstructions. We recommend verifying the vacuum with a manometer during diagnostics.

Is this a universal furnace part?
No, this is a brand-specific OEM part. Using a switch with an incorrect WC rating can lead to unsafe operation or frequent lockout events. Always match the -0.40" WC specification for your specific furnace model.

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.