Lennox 19A91 - Lennox 104758-16, 1/2 HP ECM - Programmed Blower Motor, 1250 RPM Variable, 48 FR, 120/240 VAC 1 Ph 60/50 Hz
Lennox 19A91 – Lennox 104758-16 is a factory-programmed 1/2 HP ECM blower motor designed for reliable, energy-efficient airflow control in residential and light commercial HVAC systems. This variable-speed ECM motor delivers smooth, consistent performance while significantly reducing electrical consumption compared to traditional PSC motors.
Operating at up to 1250 RPM, this 48-frame blower motor is pre-programmed by Lennox for precise airflow profiles, eliminating the need for field programming and ensuring proper system operation right out of the box. The wide voltage compatibility of 120/240 VAC, single phase, 60/50 Hz makes it suitable for a broad range of Lennox furnace and air handler applications.
The Lennox 104758-16 ECM motor is engineered for quiet operation, improved comfort control, and long service life. Its variable-speed technology allows the HVAC system to adjust airflow dynamically based on demand, improving humidity control, reducing temperature swings, and enhancing overall system efficiency. This makes it an ideal replacement motor for restoring original performance in compatible Lennox systems.
Designed to meet OEM specifications, this blower motor helps maintain factory-rated efficiency, airflow accuracy, and system reliability when replacing a failed or worn motor.
Key features and specifications:
• Lennox part number 19A91 / 104758-16
• ECM programmed blower motor
• 1/2 HP output
• Variable speed operation up to 1250 RPM
• 48 frame motor design
• 120/240 VAC, single phase
• 60/50 Hz frequency
• Factory-programmed for Lennox HVAC systems
• High efficiency, low noise operation
Common applications:
• Lennox gas furnaces
• Lennox air handlers
• Residential and light commercial HVAC systems requiring programmed ECM blower motors
This Lennox ECM blower motor is a direct OEM replacement, ensuring proper airflow control, improved energy efficiency, and dependable long-term operation when installed in approved Lennox equipment.