Reznor 38678 Orifice

The Reznor 38678 #45 Nat Gas Orifice is a high-precision combustion component designed for accurate fuel delivery in specific gas-fired HVAC heating equipment. As an OEM replacement orifice, it ensures the correct natural gas flow rate to the burner, which is critical for maintaining optimal combustion efficiency and consistent BTU output. This #45 drill size orifice is engineered to meet the exact tolerances required for Reznor unit heaters and duct furnaces, preventing issues like incomplete combustion or burner soot buildup. For technicians performing furnace maintenance or gas manifold repairs, utilizing the genuine Reznor 38678 ensures the system operates within its original HVAC equipment specifications. Its durable construction is built to withstand the high-thermal stress environment of the burner assembly, providing reliable performance in industrial and commercial heating applications. Proper orifice sizing is vital for safe operation, especially when ensuring natural gas delivery meets the manifold pressure requirements of the specified heating system.

• Precision Fuel Metering: The #45 drill size provides an accurate natural gas orifice opening for stabilized burner flames.
• OEM Compatibility: Specifically engineered as a direct Reznor replacement part to maintain system integrity.
• Enhanced Combustion: Helps achieve the proper fuel-to-air ratio, maximizing heating system performance.
• Simplified Installation: Standard threading and dimensions allow for a quick swap during preventative furnace service.
• Industrial Reliability: Built for the demands of commercial HVAC maintenance and high-cycle operation.

Common Questions

What is the drill size for the Reznor 38678?
This specific part is a #45 drill size orifice, calibrated for natural gas applications within compatible Reznor heating units.

How do I know if I need to replace my burner orifice?
Replacement is typically necessary if the original orifice is clogged with debris, shows signs of physical erosion, or if you are verifying the gas manifold pressure and find irregular heat output.

Can I use this orifice for a propane conversion?
No, the 38678 is a natural gas orifice. Converting a system to liquid propane requires a specific conversion kit with differently sized orifices and regulator springs.

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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.