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

This specific kit is designed for natural gas applications

the heavy-wall brass construction resists cross-threading and withstands the high temperatures typical of compressor discharge lines

This unit features a standard 1/2-inch inlet and outlet for compatibility with common residential burner assemblies

This 120-150F AUTO Limit Switch features an automatic reset function

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