Lennox 50J94 Burner Orifice

The Lennox 50J94 Burner Orifice is a high-precision OEM replacement part engineered for liquid propane (LP) heating applications across various Lennox furnace platforms. As a veteran technician knows, maintaining the correct manifold pressure and stoichiometric ratio requires exact specs; this orifice features a 0.0625 orifice size to ensure optimal fuel metering. Whether you are performing a Lennox LP conversion or a standard service call, using the correct Lennox 50J9401 cross-referenced component is critical for preventing delayed ignition or soot buildup. This genuine LP burner orifice is designed to meet strict factory tolerances, providing the consistent BTU output required for high-efficiency Lennox HVAC systems. By replacing worn or clogged orifices with this 0.0625-inch LP orifice, you ensure the combustion assembly operates within manufacturer parameters, maintaining system reliability throughout the heating season.

Key Benefits

• OEM Precision: Guaranteed Lennox 50J94 specifications ensure exact flow rates compared to generic after-market alternatives.
• Universal Compatibility: Fully interchangeable with part number 50J9401 for seamless integration into existing Lennox burner manifolds.
• Performance Stability: Constructed for liquid propane furnace applications, preventing common issues like irregular flame patterns.
• Optimized Combustion: The 0.0625-inch orifice size provides the accurate aperture needed for efficient fuel-to-air mixing in LP units.

Common Questions

Is the 50J94 compatible with natural gas systems?
No, this orifice is specifically sized at 0.0625 inches for liquid propane (LP) applications. Natural gas requires a different orifice diameter to account for its lower energy density and manifold pressure requirements.

Does this part replace the 50J9401?
Yes, the Lennox 50J94 and 50J9401 are identical components. They are interchangeable within the Lennox parts catalog for the same furnace models.

Why is OEM sizing critical for burner orifices?
Using a non-OEM orifice can lead to improper gas flow, causing either "under-firing" (low heat output) or "over-firing" (excessive heat), which can damage the heat exchanger or create safety hazards.

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.