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it ensures high-volume throughput even in zero-pressure differential applications
If the heat exchanger exceeds safe operating parameters—often due to restricted airflow from a clogged furnace filter or a failing blower motor—this switch opens the circuit to kill the gas valve
Reduces diagnostic time and minimizes equipment downtime during maintenance or repair
Pressure switches are safety-rated components
this module offers robust electromagnetic interference (EMI) protection and consistent performance across varying temperature ranges
Lennox 18M62 Pressure Switch 322838-753 it ensures high-volume throughput evenThe Lennox 18M62 Pressure Switch is a critical dual stage furnace component designed for precise combustion air proving in high efficiency heating systems. As an OEM Lennox replacement part, this switch is factory calibrated to monitor the static pressure produced by the inducer motor, ensuring the system only proceeds to ignition when proper venting is established. This 2 stage pressure switch features a dual level actuation pointtypically set at 0.
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