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The genuine OEM Lennox 13H39 draft inducer blower motor drives the inducer fan that pulls combustion gases through the heat exchanger and pushes them safely out the flue before the burners ignite. This pre-purge and venting cycle is essential for safe, efficient operation of your Lennox furnace and for satisfying the pressure switch that permits ignition.
A worn or failing inducer motor often announces itself with loud humming, grinding, or rattling noises, slow or no startup, or a furnace that locks out because the pressure switch never closes. Bearings that seize or windings that overheat will prevent the furnace from firing entirely, leaving you with no heat.
Choosing a genuine OEM Lennox 13H39 ensures the motor delivers the exact RPM and airflow your system's pressure switch and control sequence expect. Generic replacements can produce incorrect draft, nuisance lockouts, or premature failure. This factory part restores reliable venting and safe combustion for your Lennox equipment.