
Lennox 12L04 Manifold
The Lennox 12L04 4-Burner Gas Manifold is a critical OEM replacement component engineered for precise fuel distribution in residential and commercial gas-fired furnaces. Also identified by catalog number 104069-02, this manifold is designed to ensure uniform gas pressure across the burner assembly, preventing inefficient combustion or delayed ignition. For technicians performing system restoration, the Lennox HVAC 4-burner manifold provides exact port alignment for furnace burner orifice installation, maintaining the factory-specified BTU output of the appliance. Its heavy-duty construction is built to withstand thermal cycling and high-pressure environments common in Lennox gas furnace repair. When addressing uneven flame patterns or manifold pressure drops, swapping the assembly with a direct 12L04 Lennox replacement part ensures compatibility with the gas valve and burner tubes, maintaining the pressure integrity required for safe, high-efficiency heating cycles.
Key Benefits for Technicians
- OEM Compatibility: Built as a direct drop-in for Lennox 104069-02, eliminating the need for field modifications or bracket adjustments.
- Optimized Gas Flow: Precision-drilled ports ensure balanced manifold gas pressure for consistent flame rectification and heat exchanger loading.
- Durable Infrastructure: High-grade metallic composition resists corrosion from moisture and combustion byproducts, essential for long-term HVAC gas system maintenance.
- Streamlined Installation: Standard NPT threading and burner spacing allow for rapid replacement during peak service seasons.
Common Questions
Is the 12L04 compatible with LP conversion kits?
Yes, the Lennox 12L04 can be used in propane applications, provided the correct LP burner orifices and gas valve spring kits are installed according to the appliance's conversion instructions.
What are the signs that a gas manifold needs replacement?
Technicians should look for physical cracks, stripped orifice threads, or severe interior scaling that affects gas velocity and furnace heating efficiency.
Does this manifold include the burner orifices?
Typically, the 4-burner gas manifold is supplied as the rail assembly; orifices must be transferred from the existing unit or sourced separately based on the specific BTU rating and altitude requirements.
This item is not eligible for free shipping.
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.
Original: $206.67
-65%$206.67
$72.33Lennox 12L04 Manifold
The Lennox 12L04 4-Burner Gas Manifold is a critical OEM replacement component engineered for precise fuel distribution in residential and commercial gas-fired furnaces. Also identified by catalog number 104069-02, this manifold is designed to ensure uniform gas pressure across the burner assembly, preventing inefficient combustion or delayed ignition. For technicians performing system restoration, the Lennox HVAC 4-burner manifold provides exact port alignment for furnace burner orifice installation, maintaining the factory-specified BTU output of the appliance. Its heavy-duty construction is built to withstand thermal cycling and high-pressure environments common in Lennox gas furnace repair. When addressing uneven flame patterns or manifold pressure drops, swapping the assembly with a direct 12L04 Lennox replacement part ensures compatibility with the gas valve and burner tubes, maintaining the pressure integrity required for safe, high-efficiency heating cycles.
Key Benefits for Technicians
- OEM Compatibility: Built as a direct drop-in for Lennox 104069-02, eliminating the need for field modifications or bracket adjustments.
- Optimized Gas Flow: Precision-drilled ports ensure balanced manifold gas pressure for consistent flame rectification and heat exchanger loading.
- Durable Infrastructure: High-grade metallic composition resists corrosion from moisture and combustion byproducts, essential for long-term HVAC gas system maintenance.
- Streamlined Installation: Standard NPT threading and burner spacing allow for rapid replacement during peak service seasons.
Common Questions
Is the 12L04 compatible with LP conversion kits?
Yes, the Lennox 12L04 can be used in propane applications, provided the correct LP burner orifices and gas valve spring kits are installed according to the appliance's conversion instructions.
What are the signs that a gas manifold needs replacement?
Technicians should look for physical cracks, stripped orifice threads, or severe interior scaling that affects gas velocity and furnace heating efficiency.
Does this manifold include the burner orifices?
Typically, the 4-burner gas manifold is supplied as the rail assembly; orifices must be transferred from the existing unit or sourced separately based on the specific BTU rating and altitude requirements.
This item is not eligible for free shipping.
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.
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Product Information
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Description
The Lennox 12L04 4-Burner Gas Manifold is a critical OEM replacement component engineered for precise fuel distribution in residential and commercial gas-fired furnaces. Also identified by catalog number 104069-02, this manifold is designed to ensure uniform gas pressure across the burner assembly, preventing inefficient combustion or delayed ignition. For technicians performing system restoration, the Lennox HVAC 4-burner manifold provides exact port alignment for furnace burner orifice installation, maintaining the factory-specified BTU output of the appliance. Its heavy-duty construction is built to withstand thermal cycling and high-pressure environments common in Lennox gas furnace repair. When addressing uneven flame patterns or manifold pressure drops, swapping the assembly with a direct 12L04 Lennox replacement part ensures compatibility with the gas valve and burner tubes, maintaining the pressure integrity required for safe, high-efficiency heating cycles.
Key Benefits for Technicians
- OEM Compatibility: Built as a direct drop-in for Lennox 104069-02, eliminating the need for field modifications or bracket adjustments.
- Optimized Gas Flow: Precision-drilled ports ensure balanced manifold gas pressure for consistent flame rectification and heat exchanger loading.
- Durable Infrastructure: High-grade metallic composition resists corrosion from moisture and combustion byproducts, essential for long-term HVAC gas system maintenance.
- Streamlined Installation: Standard NPT threading and burner spacing allow for rapid replacement during peak service seasons.
Common Questions
Is the 12L04 compatible with LP conversion kits?
Yes, the Lennox 12L04 can be used in propane applications, provided the correct LP burner orifices and gas valve spring kits are installed according to the appliance's conversion instructions.
What are the signs that a gas manifold needs replacement?
Technicians should look for physical cracks, stripped orifice threads, or severe interior scaling that affects gas velocity and furnace heating efficiency.
Does this manifold include the burner orifices?
Typically, the 4-burner gas manifold is supplied as the rail assembly; orifices must be transferred from the existing unit or sourced separately based on the specific BTU rating and altitude requirements.
This item is not eligible for free shipping.
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.












