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making it an essential component for bypass thermal expansion relief
allowing for CW or CCW rotation
allowing technicians to fine-tune airflow requirements
For multi-stage applications
maintaining the safe operation of the residential heating system
Lennox 75M20 Pressure Switch R-410A making it an essential componentThe Lennox 75M20 Pressure Switch is a critical safety component engineered for high altitude gas furnace applications, specifically calibrated for elevations between 4501 and 7500 feet. This OEM Lennox replacement part, also identified as 75M2001, monitors the inducer motor's static pressure to ensure the combustion air system is clear and operational before allowing the ignition sequence to initiate. With a precise fixed set point of 0. 75" WC (water
