Lennox 79L57 Orifice
The Lennox 79L57 is a critical Natural Gas Burner Orifice engineered specifically for high-efficiency Lennox gas furnaces and heating units. This genuine OEM replacement part is precision-machined to deliver an exact BTU output by regulating the volumetric flow of natural gas to the burner assembly. Using a Lennox 79L57 Orifice ensures your manifold pressure aligns with factory specifications, preventing issues like incomplete combustion, soot buildup, or burner resonance. For technicians performing Lennox furnace repair or routine manifold maintenance, this component provides the exact orifice diameter required to maintain the appliance's AHRI rating and steady-state efficiency. Unlike universal fittings, this Lennox HVAC part features a specific thread pitch and bore tolerance designed to integrate seamlessly with the original gas valve and burner manifold setup.
Key Technical Benefits- OEM Precision: Calibrated bore sizing ensures accurate fuel-to-air ratios for optimal combustion and minimized carbon monoxide production.
- Direct Compatibility: Designed specifically for Lennox natural gas furnace manifolds, eliminating the risks associated with adjustable or third-party orifices.
- Durable Construction: Manufactured from high-grade brass to resist thermal expansion and corrosion within the burner compartment.
- System Reliability: Maintains consistent flame patterns across the burner profile to prevent hot spots on the heat exchanger.
Can the 79L57 be used for Liquid Propane (LP) conversions?
No, the 79L57 burner orifice is strictly for natural gas applications. Conversion to LP requires a specific orifice with a smaller drill size and a corresponding gas valve spring kit.
How do I verify if the 79L57 is the correct size for my specific BTU rating?
Always cross-reference the 79L57 part number against the furnace rating plate and the Lennox engineering handbook, taking into account your local altitude and the gas heating value (BTU/cu ft).
What are the signs of a clogged or failing gas orifice?
Technicians should look for uneven flame heights, yellow tipping, or delayed ignition. If the orifice is fouled or the bore is damaged during cleaning, a genuine Lennox replacement is necessary to restore safe operation.
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.
Lennox 79L57 Orifice
The Lennox 79L57 is a critical Natural Gas Burner Orifice engineered specifically for high-efficiency Lennox gas furnaces and heating units. This genuine OEM replacement part is precision-machined to deliver an exact BTU output by regulating the volumetric flow of natural gas to the burner assembly. Using a Lennox 79L57 Orifice ensures your manifold pressure aligns with factory specifications, preventing issues like incomplete combustion, soot buildup, or burner resonance. For technicians performing Lennox furnace repair or routine manifold maintenance, this component provides the exact orifice diameter required to maintain the appliance's AHRI rating and steady-state efficiency. Unlike universal fittings, this Lennox HVAC part features a specific thread pitch and bore tolerance designed to integrate seamlessly with the original gas valve and burner manifold setup.
Key Technical Benefits- OEM Precision: Calibrated bore sizing ensures accurate fuel-to-air ratios for optimal combustion and minimized carbon monoxide production.
- Direct Compatibility: Designed specifically for Lennox natural gas furnace manifolds, eliminating the risks associated with adjustable or third-party orifices.
- Durable Construction: Manufactured from high-grade brass to resist thermal expansion and corrosion within the burner compartment.
- System Reliability: Maintains consistent flame patterns across the burner profile to prevent hot spots on the heat exchanger.
Can the 79L57 be used for Liquid Propane (LP) conversions?
No, the 79L57 burner orifice is strictly for natural gas applications. Conversion to LP requires a specific orifice with a smaller drill size and a corresponding gas valve spring kit.
How do I verify if the 79L57 is the correct size for my specific BTU rating?
Always cross-reference the 79L57 part number against the furnace rating plate and the Lennox engineering handbook, taking into account your local altitude and the gas heating value (BTU/cu ft).
What are the signs of a clogged or failing gas orifice?
Technicians should look for uneven flame heights, yellow tipping, or delayed ignition. If the orifice is fouled or the bore is damaged during cleaning, a genuine Lennox replacement is necessary to restore safe operation.
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 79L57 is a critical Natural Gas Burner Orifice engineered specifically for high-efficiency Lennox gas furnaces and heating units. This genuine OEM replacement part is precision-machined to deliver an exact BTU output by regulating the volumetric flow of natural gas to the burner assembly. Using a Lennox 79L57 Orifice ensures your manifold pressure aligns with factory specifications, preventing issues like incomplete combustion, soot buildup, or burner resonance. For technicians performing Lennox furnace repair or routine manifold maintenance, this component provides the exact orifice diameter required to maintain the appliance's AHRI rating and steady-state efficiency. Unlike universal fittings, this Lennox HVAC part features a specific thread pitch and bore tolerance designed to integrate seamlessly with the original gas valve and burner manifold setup.
Key Technical Benefits- OEM Precision: Calibrated bore sizing ensures accurate fuel-to-air ratios for optimal combustion and minimized carbon monoxide production.
- Direct Compatibility: Designed specifically for Lennox natural gas furnace manifolds, eliminating the risks associated with adjustable or third-party orifices.
- Durable Construction: Manufactured from high-grade brass to resist thermal expansion and corrosion within the burner compartment.
- System Reliability: Maintains consistent flame patterns across the burner profile to prevent hot spots on the heat exchanger.
Can the 79L57 be used for Liquid Propane (LP) conversions?
No, the 79L57 burner orifice is strictly for natural gas applications. Conversion to LP requires a specific orifice with a smaller drill size and a corresponding gas valve spring kit.
How do I verify if the 79L57 is the correct size for my specific BTU rating?
Always cross-reference the 79L57 part number against the furnace rating plate and the Lennox engineering handbook, taking into account your local altitude and the gas heating value (BTU/cu ft).
What are the signs of a clogged or failing gas orifice?
Technicians should look for uneven flame heights, yellow tipping, or delayed ignition. If the orifice is fouled or the bore is damaged during cleaning, a genuine Lennox replacement is necessary to restore safe operation.
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.
