York 1NP0418 Conversion Kit

For HVAC technicians converting York gas furnaces from natural gas to liquid propane, the York 1NP0418 Conversion Kit is the essential OEM component for field-adjustable fuel transitions. This kit is specifically engineered for York TG8S, TG9S, TGLS, and TM9E series furnaces using Single Stage White-Rodgers gas valves. Proper installation ensures optimized manifold pressure and prevents issues like sooting or flame rollout caused by incorrect gas-to-air ratios. The package includes precision-machined LP orifices, a heavy-duty regulator spring kit, and mandatory conversion labeling to maintain ANSI Z21.47 compliance. By utilizing OEM York furnace parts, contractors ensure that the burner performance aligns with the original manufacturer’s furnace Btu/h rating. Whether you are dealing with high-altitude adjustments or standard LP gas conversion requirements, this kit provides the technical tolerances necessary for stable ignition and efficient combustion cycles in residential heating systems.

• Ensures OEM-spec manifold pressure for stable liquid propane combustion.
• Includes stainless steel burner orifices sized for specific York furnace BTU inputs.
• Directly compatible with White-Rodgers 36G and 36J series single-stage gas valves.
• Prevents incomplete combustion and reduces carbon monoxide risks during fuel transitions.
• Simplifies field conversion for residential York, Coleman, and Luxaire gas furnaces.

Which gas valves is this kit compatible with?
The 1NP0418 is designed for White-Rodgers single-stage valves. Always verify the model number on your furnace's gas valve before installation to ensure the regulator spring fits the housing.

Does this kit include a low pressure switch?
No, this is a natural gas to LP conversion kit; certain jurisdictions or furnace models may require a separate LP gas pressure switch to monitor tank levels and manifold inlet pressure.

Are the orifices color-coded?
While York often uses standard sizing, always verify the drill bit size or stamped number on the LP orifices against the furnace rating plate to confirm the correct BTU/hr per burner output.

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.