Lennox 33M12 Heat Exchanger Assembly Aluminized Steel LGB060 LGB120

The Lennox 33M12 (LB-101202E) is an OEM aluminized steel heat exchanger assembly designed specifically for Standard Heat LGB060 and LGB120 Series commercial rooftop units. This genuine Lennox replacement component restores safe and efficient operation by ensuring proper combustion, heat transfer, and airflow performance in light-commercial HVAC systems.

Key Features:

• Aluminized steel construction provides enhanced corrosion resistance and long-term durability in demanding commercial environments
• Direct-fit OEM replacement engineered to Lennox factory specifications—installs without modification
• Maintains original performance characteristics of LGB-Series furnace section for reliable heat output
• Transfers heat efficiently from burner combustion to supply air stream
• Restores proper combustion efficiency and heating output in existing systems

Applications: Commonly used in restaurants, retail buildings, office spaces, and other light-commercial HVAC installations requiring dependable heating performance. Compatible with Standard Heat configurations of LGB060 and LGB120 Series packaged rooftop units.

OEM Part Numbers: 33M12, LB-101202E