Amana-Goodman 11112501S Pressure Switch

The Amana-Goodman 11112501S Pressure Switch is a critical OEM induction safety component designed for precise furnace pressure switch troubleshooting and repair. This SPST normally open (NO) switch is factory-calibrated to a -0.33" WC set point, ensuring the inducer motor maintains proper static pressure before allowing the ignition sequence to proceed. As a direct 11112501 Goodman replacement part, it features a standard 1/4" barb connection for seamless integration with existing vacuum tubing. When a furnace pressure switch stays open, it often indicates a failure in this safety circuit; using this genuine HVAC pressure switch ensures the control board receives accurate pneumatic feedback. Designed for high-cycle reliability in Amana and Goodman gas furnaces, this component prevents hazardous operation during venting obstructions or blower failures.

• OEM Precision: Guaranteed -0.33" WC trip point matches original factory specifications for system safety.
• Universal Compatibility: Serves as the updated 11112501S replacement for the legacy 11112501 model.
• Field Ready: Industry-standard 1/4" barb connection and spade terminals facilitate fast installation during service calls.
• System Protection: Reliable SPST normally open logic prevents burner ignition under improper drafting conditions.

What does the -0.33" WC rating signify?
This is the pressure threshold at which the internal diaphragm closes the electrical circuit. If the inducer fan doesn't create at least -0.33" of water column vacuum, the Amana-Goodman 11112501S will remain open, preventing the furnace from firing.

Can I use this to replace a switch with a different vacuum rating?
No. Pressure switches are safety-critical components tuned to specific motor and heat exchanger configurations. Replacing a -0.33" WC switch with a different rating can lead to carbon monoxide risks or nuisance tripping.

Does this include the vacuum tubing?
This part is the switch assembly only. We recommend inspecting the existing tubing for cracks or moisture buildup when installing the new 11112501S.

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.