Always inspect the collector box and pressure switch tubing for moisture or cracks before installing the new draft inducer

Key Benefits Direct OEM Compatibility: Ensures a perfect fit for Carrier

Using this in an LP system would cause hazardous combustion levels due to the different pressure requirements

Extended Service Life: The cast bronze body and brass trim withstand high-velocity fluid flow and thermal stress common in HVAC mechanical rooms

The unit must be mounted vertically

Lennox 18M62 Pressure Switch 321894-706 Always inspect the collector boxThe 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.