Lennox 19W04 Inducer Assembly

The Lennox 19W04 Inducer Assembly is a high-performance OEM replacement 230V 1-speed inducer motor designed for precise compatibility with specific series of Lennox gas furnaces and residential HVAC units. This draft inducer blower is engineered to maintain the correct static pressure and air-fuel mixture required for safe combustion, effectively venting flue gases through the heat exchanger. As a critical component for system start-up, the 19W04 Lennox inducer ensures the pressure switch closes reliably, preventing furnace lockouts and intermittent ignition failures common with worn aftermarket alternatives. Utilizing a robust motor housing and factory-balanced impeller, this Lennox furnace exhaust motor delivers consistent RPMs under load, optimizing thermal efficiency and ensuring long-term equipment reliability in demanding HVACR applications.

Key Benefits for Contractors

• Direct OEM Fit: Eliminates field modifications, ensuring Lennox 19W04 compatibility with original mounting brackets and wiring harnesses.
• Optimized Combustion: Specifically calibrated to provide the exact CFM required for your Lennox gas furnace repair, preventing carbon buildup.
• Quiet Operation: Precision-engineered assembly minimizes vibration and resonance commonly found in universal draft inducers.
• Rugged Build Quality: Built for high-cycle environments, resisting corrosion and thermal stress in the exhaust stream.

Common Technical Questions

Does this assembly include the necessary gaskets?
Technicians should verify the condition of existing seals; while this is a complete OEM 230V inducer assembly, we always recommend using a new gasket to ensure a gas-tight seal at the collector box.

What are the electrical requirements for the 19W04?
This is a 230V single-speed inducer motor. It is not interchangeable with 120V models. Always verify voltage output from the integrated furnace control (IFC) board before installation.

Is this compatible with variable-speed furnaces?
No, the 19W04 is a dedicated 1-speed inducer replacement. For variable-speed or multi-stage units, consult the equipment's service manual for the correct part number.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.