Ensure efficient furnace startup and safe combustion airflow with the Lennox 74K77 (42250-001) Draft Inducer Blower. Engineered to meet Lennox’s high-performance standards, this OEM replacement part is responsible for drawing combustion gases through the heat exchanger and out of the home, helping your HVAC system maintain optimal performance and energy efficiency. The 74K77 is specifically designed for compatibility with select Lennox gas furnaces, delivering reliable pressure differential to trigger safe ignition.

Key Features:

Genuine Lennox OEM part for guaranteed fit and function

Promotes proper airflow for safe ignition and combustion

Helps prevent overheating and combustion buildup

Part Number: 74K77 / Manufacturer Reference: 42250-001

Designed for long-lasting, quiet operation

Ideal for contractors and homeowners performing system repairs or routine maintenance, the Lennox 74K77 Draft Inducer Blower restores performance while ensuring system safety.

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