Lennox 75M22 Pressure Switch R-407C delivering a cooling capacity range

delivering a cooling capacity range of approximately 156W to 1567W depending on evaporating temperatures

ensuring the mechanical integrity of the discharge or liquid line is maintained without compromising pressure drops or system efficiency

Maintaining a leak-free seal between the heat exchanger header and the manifold is critical for system pressure and thermal efficiency

providing superior mass flow and stable low-temperature performance

Common Questions: What causes a TXV to "hunt" or fluctuate

Lennox 75M22 Pressure Switch R-407C delivering a cooling capacity rangeThe Lennox 75M22 Pressure Switch is a high precision OEM replacement part engineered for critical airflow monitoring in specific Lennox and Armstrong furnace models, including the G61MPV series. This dual pressure switch is factory calibrated with settings of 0. 50" and 0. 75" WC, ensuring the combustion air inducer maintains the correct static pressure for safe ignition and continuous operation. As a single pole single throw (SPST) component, it