Broad Compatibility: Validated for use across several Trane and American Standard HVAC units

mounting hardware and secondary ignition components should be inspected and reused or replaced separately if necessary

Automatic Reset: Features a 100-160°F range with an automatic reset function (L160-30F)

For intermittent pilot or hot surface ignition systems

Trane SWT2973 Pressure Switch 319825-402 Broad Compatibility: Validated for useThe Trane SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at 1. 33" WC and close at 1. 52" WC, preventing unsafe