York S1-029-25456-000 Burner Orifice

The York S1-029-25456-000 Burner Orifice is a precision-engineered component designed for high-efficiency gas furnace manifolds. This #43 burner orifice features a .089-inch diameter aperture, specifically calibrated to ensure exact BTU input ratings and optimal combustion performance across compatible York, Coleman, and Luxaire heating systems. As a direct replacement for S1-029-20423-043, this 2-groove (2Grv) model maintains the critical gas flow velocity and pressure drop specifications required for safe and efficient appliance operation. Technicians should verify manifold pressure after installation to ensure the S1-029-25456-000 replacement aligns with local altitude and specific gas type adjustments. Proper seating of this York furnace orifice prevents gas leaks and ensures a stable flame pattern, mitigating common field issues like soot buildup or uneven heat exchange. This genuine OEM part is vital for maintaining equipment integrity during seasonal maintenance or burner manifold overhauls.

Key Benefits

• Precision-drilled #43 (.089) aperture for accurate gas metering.
• Direct OEM fit for York and Coleman furnace manifolds.
• 2-groove identification mark for rapid field verification.
• Maintains factory-specified gas-to-air mixing ratios for clean combustion.

Common Questions

What is the drill size for the S1-029-25456-000?
This part is a #43 drill size orifice, measuring exactly .089 inches.

Can I use this to replace part S1-029-20423-043?
Yes, the S1-029-25456-000 is the official direct replacement for the S1-029-20423-043 model.

Why does this orifice have two grooves?
The 2-groove (2Grv) marking is a technical identifier used by HVAC contractors to confirm flow characteristics and compatibility without needing to gauge the orifice manually.

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.