Lennox 11L08 Gas Valve

The Lennox 11L08 is a high-performance 2-stage natural gas valve, engineered for precise fuel regulation in residential and light commercial furnaces. This OEM replacement, also documented under catalog number 11L0801 and manufacturing part 103181-05, is a White Rodgers 36J54-504B1 equivalent. Professionals recognize the 36J series gas valve for its 24V low-voltage control and compact 1/2" NPT inlet/outlet configuration, which facilitates straightforward integration into existing gas manifolds. Operating as a fast-opening gas valve, this unit ensures reliable ignition and consistent manifold pressure across both low-fire and high-fire heating cycles. It features integrated pressure taps on both the inlet and outlet sides, allowing technicians to perform accurate manometer readings during commissioning to verify gas flow specifications. Built with corrosion-resistant materials, the 11L08 furnace valve provides the durability required for high-cycle environments, maintaining tight shut-off integrity and stable regulation under varying supply pressures.

• Direct OEM Compatibility: Serves as a drop-in replacement for Lennox 103181-05, ensuring electrical and mechanical alignment without manifold modification.
• Dual-Stage Efficiency: Managed by a 2-stage furnace control, this valve toggles between high and low fire to optimize fuel consumption and heat exchanger longevity.
• Technical Precision: Includes 1/8" NPT pressure taps for easy verification of natural gas settings during annual maintenance or troubleshooting.
• Versatile Application: Standard 1/2 inch NPT pipe size provides universal fitment for a wide range of Lennox-specific and compatible 2-stage gas heating systems.

Is the Lennox 11L08 compatible with LP conversion?
Yes, while this unit is factory-configured for natural gas, it can be converted using a compatible LP conversion kit (such as the White Rodgers 92-0659). Technicians must adjust the gas regulator springs according to the manufacturer’s high-altitude and fuel-type requirements.

What are the electrical requirements for this 2-stage valve?
The valve operates on a 24 VAC circuit. Typically, the furnace control board sends signals to the W1 (Low Fire) and W2 (High Fire) terminals to modulate the solenoid and regulator settings based on the thermostat demand.

Can I use 11L08 to replace 11L0801?
Yes. The 11L08 is the exact same component as the 11L0801. These part numbers are used interchangeably across Lennox service manuals and parts catalogs.

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.