Description
The York S1-1NP0440 is an OEM natural-to-LP gas conversion kit designed to convert compatible York furnaces and heating appliances from natural gas operation to liquid propane (LP) fuel. This kit provides a straightforward, manufacturer-approved solution for technicians and contractors who need to adapt York equipment to propane fuel sources — ideal for installations in areas without access to natural gas utility lines.
Key Features
- Converts York furnaces from natural gas (NG) to liquid propane (LP) operation
- OEM York replacement part — engineered for precise fit and compatibility
- Includes necessary conversion components for a complete fuel-type changeover
- Supports reliable ignition, combustion, and safe operation on LP fuel
- Designed for use by qualified HVAC technicians and service professionals
Why Choose an OEM Conversion Kit?
Using a genuine York conversion kit ensures that all orifices, pressure settings, and components are factory-calibrated for LP gas. This maintains equipment warranty compliance, safe combustion performance, and peak heating efficiency — avoiding the risks associated with aftermarket or improperly sized conversion parts.
Application
- Compatible with select York furnace models — verify compatibility with your unit’s model and serial number before ordering
- Intended for professional installation by a licensed HVAC technician
- Suitable for residential and light commercial York heating equipment
Important Notes
- Always consult the furnace installation manual and local codes before performing a gas conversion
- Gas conversion must be performed by a qualified service technician
- Confirm unit model compatibility prior to purchase







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