Lennox 11K98 Inducer Assembly with Pressure Switch Kit

The Lennox 11K98 (LB-79541C) is a complete induced draft blower and pressure switch replacement kit designed specifically for Lennox residential gas furnaces. This OEM assembly combines a high-efficiency inducer motor with a matched pressure switch to ensure proper venting and safe furnace operation.

Key Features:

• Complete assembly includes inducer motor and pressure switch
• Rated for 75,000 BTU/h furnace applications
• High wind kit design prevents nuisance pressure switch trips
• OEM Lennox quality ensures proper fit and reliable performance
• Matched pressure switch calibrated for blower blade pitch
• Direct replacement for original equipment on compatible models

Compatible Furnace Models:

• Lennox G24M series gas furnaces
• Lennox 80MGF3-75A series furnaces
• Lennox 80MFG-1 and 80MFG-2 units (as upgrade kit)

The inducer assembly creates the necessary draft to safely vent combustion gases outside while the pressure switch monitors airflow to confirm proper ventilation before allowing the ignition sequence. This kit supersedes earlier inducer motors and provides enhanced performance in high-wind conditions. The pressure tap is mounted parallel to the motor shaft for easy identification of converted units.

Note: This is a field-installed high wind conversion kit. Once installed, the unit should be serviced using parts listed under optional field-installed components. Professional installation by a qualified HVAC technician is recommended to ensure proper setup and safety compliance.