
Lennox 57W88 Orifice
The Lennox 57W88 Orifice is a precision-engineered OEM replacement part designed for specific gas flow regulation in Lennox furnaces and residential heating systems. With a fixed diameter of .81 orifice size, this gray-coded component is critical for maintaining the stoichiometric balance required for efficient combustion and heat transfer. As a technician, you know that using the correct metering device is non-negotiable for system pressure stability and atmospheric burner performance. This furnace gas orifice ensures that the manifold pressure translates into the exact BTU output designated by the manufacturer specifications.
Constructed from high-grade materials to resist corrosion and thermal degradation, the Lennox 57W88 (also referenced by manufacturer number R40086B001) provides a consistent HVAC gas flow rate. Whether you are performing a seasonal tune-up or a targeted furnace orifice replacement, this genuine Lennox HVAC part guarantees compatibility with compatible CG90 series units and other specified Lennox furnace models. Maintaining proper flow regulation prevents common issues such as soot buildup, burner flame lifting, or incomplete combustion caused by incorrect fuel-to-air ratios.
Key Benefits:- Precision Metering: Delivers an exact .81 orifice diameter for consistent gas distribution to the burner manifold.
- OEM Compatibility: Guaranteed fit for Lennox furnace parts, ensuring the system operates within original design parameters.
- Enhanced Efficiency: Supports peak combustion efficiency and reliable ignition and pilot performance.
- Durable Construction: High-quality gray composite or metal housing designed to withstand standard operating temperatures and chemical exposure.
- How do I verify if the 57W88 is the correct size for my manifold? Always refer to the furnace rating plate. This part is a .81 size orifice; installing an incorrect size can lead to dangerous over-firing or under-firing conditions.
- Is color coding standard for these Lennox orifices? Yes, the gray color code on the 57W88 is a visual indicator used by Lennox to identify this specific .81 orifice size quickly in the field.
- Can this orifice be used for both Natural Gas and Liquid Propane conversions? Orifice sizing depends on the fuel's BTU content and required pressure. Check the specific Lennox conversion kit instructions to ensure .81 is the mandated size for your fuel type and altitude.
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: $3.78
-65%$3.78
$1.32Lennox 57W88 Orifice
The Lennox 57W88 Orifice is a precision-engineered OEM replacement part designed for specific gas flow regulation in Lennox furnaces and residential heating systems. With a fixed diameter of .81 orifice size, this gray-coded component is critical for maintaining the stoichiometric balance required for efficient combustion and heat transfer. As a technician, you know that using the correct metering device is non-negotiable for system pressure stability and atmospheric burner performance. This furnace gas orifice ensures that the manifold pressure translates into the exact BTU output designated by the manufacturer specifications.
Constructed from high-grade materials to resist corrosion and thermal degradation, the Lennox 57W88 (also referenced by manufacturer number R40086B001) provides a consistent HVAC gas flow rate. Whether you are performing a seasonal tune-up or a targeted furnace orifice replacement, this genuine Lennox HVAC part guarantees compatibility with compatible CG90 series units and other specified Lennox furnace models. Maintaining proper flow regulation prevents common issues such as soot buildup, burner flame lifting, or incomplete combustion caused by incorrect fuel-to-air ratios.
Key Benefits:- Precision Metering: Delivers an exact .81 orifice diameter for consistent gas distribution to the burner manifold.
- OEM Compatibility: Guaranteed fit for Lennox furnace parts, ensuring the system operates within original design parameters.
- Enhanced Efficiency: Supports peak combustion efficiency and reliable ignition and pilot performance.
- Durable Construction: High-quality gray composite or metal housing designed to withstand standard operating temperatures and chemical exposure.
- How do I verify if the 57W88 is the correct size for my manifold? Always refer to the furnace rating plate. This part is a .81 size orifice; installing an incorrect size can lead to dangerous over-firing or under-firing conditions.
- Is color coding standard for these Lennox orifices? Yes, the gray color code on the 57W88 is a visual indicator used by Lennox to identify this specific .81 orifice size quickly in the field.
- Can this orifice be used for both Natural Gas and Liquid Propane conversions? Orifice sizing depends on the fuel's BTU content and required pressure. Check the specific Lennox conversion kit instructions to ensure .81 is the mandated size for your fuel type and altitude.
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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Description
The Lennox 57W88 Orifice is a precision-engineered OEM replacement part designed for specific gas flow regulation in Lennox furnaces and residential heating systems. With a fixed diameter of .81 orifice size, this gray-coded component is critical for maintaining the stoichiometric balance required for efficient combustion and heat transfer. As a technician, you know that using the correct metering device is non-negotiable for system pressure stability and atmospheric burner performance. This furnace gas orifice ensures that the manifold pressure translates into the exact BTU output designated by the manufacturer specifications.
Constructed from high-grade materials to resist corrosion and thermal degradation, the Lennox 57W88 (also referenced by manufacturer number R40086B001) provides a consistent HVAC gas flow rate. Whether you are performing a seasonal tune-up or a targeted furnace orifice replacement, this genuine Lennox HVAC part guarantees compatibility with compatible CG90 series units and other specified Lennox furnace models. Maintaining proper flow regulation prevents common issues such as soot buildup, burner flame lifting, or incomplete combustion caused by incorrect fuel-to-air ratios.
Key Benefits:- Precision Metering: Delivers an exact .81 orifice diameter for consistent gas distribution to the burner manifold.
- OEM Compatibility: Guaranteed fit for Lennox furnace parts, ensuring the system operates within original design parameters.
- Enhanced Efficiency: Supports peak combustion efficiency and reliable ignition and pilot performance.
- Durable Construction: High-quality gray composite or metal housing designed to withstand standard operating temperatures and chemical exposure.
- How do I verify if the 57W88 is the correct size for my manifold? Always refer to the furnace rating plate. This part is a .81 size orifice; installing an incorrect size can lead to dangerous over-firing or under-firing conditions.
- Is color coding standard for these Lennox orifices? Yes, the gray color code on the 57W88 is a visual indicator used by Lennox to identify this specific .81 orifice size quickly in the field.
- Can this orifice be used for both Natural Gas and Liquid Propane conversions? Orifice sizing depends on the fuel's BTU content and required pressure. Check the specific Lennox conversion kit instructions to ensure .81 is the mandated size for your fuel type and altitude.
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.












