
Lennox 41J81 Orifice
The Lennox 41J81 Orifice is a precision-engineered #54 LP straight orifice designed specifically for Liquid Propane gas conversions and pressure regulation in residential and light commercial HVAC systems. This replacement gas orifice features a specialized 0.055-inch drill size, ensuring the calibrated flow rate necessary to maintain proper manifold pressure and optimal combustion efficiency. Engineered for durability, this Lennox gas burner part prevents common burner issues such as incomplete combustion or sooting by providing a consistent fuel-to-air ratio. When performing a Lennox furnace LP conversion, using an OEM high-efficiency furnace orifice like the 41J81 ensures the system operates within manufacturer specifications. This component is essential for technicians managing furnace gas valve calibration and seeking a reliable Lennox heating system component that withstands high-temperature cycles without degradation. Proper installation of this #54 gas orifice is critical for achieving the rated BTU output while maintaining safe operation of the primary heat exchanger.
- Precision Calibration: The #54 drill size provides exact fuel metering for LP gas applications, ensuring consistent BTU delivery.
- OEM Compatibility: Designed as a direct drop-in replacement for Lennox units, eliminating the need for field modifications.
- Enhanced Combustion: Proper orifice sizing prevents yellow flame conditions and reduces carbon monoxide production.
- Durable Construction: Manufactured from high-grade brass to resist corrosion and thermal expansion during long run cycles.
Common Technical Questions
What is the drill size for the Lennox 41J81?
The 41J81 is a #54 orifice, which corresponds to a 0.055-inch diameter opening, optimized for Liquid Propane flow rates.
Can this orifice be used for Natural Gas applications?
No, this specific orifice is calibrated for the higher pressure and density of Liquid Propane. Using it for Natural Gas will result in significantly underfired burners.
Is the 41J81 compatible with all Lennox furnaces?
While it fits many models requiring a #54 LP orifice, technicians must verify the specific manifold pressure and furnace BTU rating in the unit's technical manual before installation.
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: $19.42
-65%$19.42
$6.80Lennox 41J81 Orifice
The Lennox 41J81 Orifice is a precision-engineered #54 LP straight orifice designed specifically for Liquid Propane gas conversions and pressure regulation in residential and light commercial HVAC systems. This replacement gas orifice features a specialized 0.055-inch drill size, ensuring the calibrated flow rate necessary to maintain proper manifold pressure and optimal combustion efficiency. Engineered for durability, this Lennox gas burner part prevents common burner issues such as incomplete combustion or sooting by providing a consistent fuel-to-air ratio. When performing a Lennox furnace LP conversion, using an OEM high-efficiency furnace orifice like the 41J81 ensures the system operates within manufacturer specifications. This component is essential for technicians managing furnace gas valve calibration and seeking a reliable Lennox heating system component that withstands high-temperature cycles without degradation. Proper installation of this #54 gas orifice is critical for achieving the rated BTU output while maintaining safe operation of the primary heat exchanger.
- Precision Calibration: The #54 drill size provides exact fuel metering for LP gas applications, ensuring consistent BTU delivery.
- OEM Compatibility: Designed as a direct drop-in replacement for Lennox units, eliminating the need for field modifications.
- Enhanced Combustion: Proper orifice sizing prevents yellow flame conditions and reduces carbon monoxide production.
- Durable Construction: Manufactured from high-grade brass to resist corrosion and thermal expansion during long run cycles.
Common Technical Questions
What is the drill size for the Lennox 41J81?
The 41J81 is a #54 orifice, which corresponds to a 0.055-inch diameter opening, optimized for Liquid Propane flow rates.
Can this orifice be used for Natural Gas applications?
No, this specific orifice is calibrated for the higher pressure and density of Liquid Propane. Using it for Natural Gas will result in significantly underfired burners.
Is the 41J81 compatible with all Lennox furnaces?
While it fits many models requiring a #54 LP orifice, technicians must verify the specific manifold pressure and furnace BTU rating in the unit's technical manual before installation.
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 41J81 Orifice is a precision-engineered #54 LP straight orifice designed specifically for Liquid Propane gas conversions and pressure regulation in residential and light commercial HVAC systems. This replacement gas orifice features a specialized 0.055-inch drill size, ensuring the calibrated flow rate necessary to maintain proper manifold pressure and optimal combustion efficiency. Engineered for durability, this Lennox gas burner part prevents common burner issues such as incomplete combustion or sooting by providing a consistent fuel-to-air ratio. When performing a Lennox furnace LP conversion, using an OEM high-efficiency furnace orifice like the 41J81 ensures the system operates within manufacturer specifications. This component is essential for technicians managing furnace gas valve calibration and seeking a reliable Lennox heating system component that withstands high-temperature cycles without degradation. Proper installation of this #54 gas orifice is critical for achieving the rated BTU output while maintaining safe operation of the primary heat exchanger.
- Precision Calibration: The #54 drill size provides exact fuel metering for LP gas applications, ensuring consistent BTU delivery.
- OEM Compatibility: Designed as a direct drop-in replacement for Lennox units, eliminating the need for field modifications.
- Enhanced Combustion: Proper orifice sizing prevents yellow flame conditions and reduces carbon monoxide production.
- Durable Construction: Manufactured from high-grade brass to resist corrosion and thermal expansion during long run cycles.
Common Technical Questions
What is the drill size for the Lennox 41J81?
The 41J81 is a #54 orifice, which corresponds to a 0.055-inch diameter opening, optimized for Liquid Propane flow rates.
Can this orifice be used for Natural Gas applications?
No, this specific orifice is calibrated for the higher pressure and density of Liquid Propane. Using it for Natural Gas will result in significantly underfired burners.
Is the 41J81 compatible with all Lennox furnaces?
While it fits many models requiring a #54 LP orifice, technicians must verify the specific manifold pressure and furnace BTU rating in the unit's technical manual before installation.
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.












