Trane SEN0335 Flow Sensor 318973-401 Always verify your specific model

Always verify your specific model and serial number to ensure a proper fit before installation

a critical component for low-ambient cooling operations

High Thermal Stability: Maintains performance at standard rating points of 45°F evaporator / 130°F condenser temperatures

while the high-flex diaphragm responds accurately to refrigerant pressure changes to modulate water flow

the P627054 is the manufacturer-designated direct replacement for the legacy P623667 motor

Trane SEN0335 Flow Sensor 318973-401 Always verify your specific modelThe Trane SEN0335 Flow Sensor (OEM Part # SEN00335) is a high precision airflow monitoring component engineered for commercial and residential HVAC systems. Unlike basic mechanical switches that only provide binary on off feedback, this thermal flow sensor utilizes advanced sensor tube technology to provide continuous, real time data on air velocity and volume within the ductwork. This constant feedback loop is essential for HVAC system diagnostics,