OEM Lennox Draft Inducer Motor Assembly — 69M33

The genuine OEM Lennox 69M33 draft inducer motor assembly is a complete combustion blower that vents exhaust gases through the heat exchanger and out the flue. Supplied as a matched motor-and-housing unit, it creates the negative pressure your furnace needs to prove draft on startup and to safely evacuate combustion byproducts during every heating cycle. It is manufactured to the exact airflow, voltage, and mounting specifications your Lennox furnace demands.

Signs of a failing 69M33 include loud grinding, rattling, or humming from the inducer, a furnace that locks out on a pressure switch error before ignition, or repeated failed startups. Worn bearings, a cracked wheel, or a weakening motor reduce draft and can leave the system unable to light or prone to shutting down mid-cycle.

Installing a genuine OEM Lennox assembly is essential because the inducer governs safe combustion and venting. An incorrect aftermarket unit can produce the wrong draft, triggering pressure switch faults, incomplete combustion, or nuisance lockouts. The factory 69M33 delivers the correct airflow, electrical match, and precise fit for safe, reliable furnace operation.