The Lennox 20X10 natural gas to LP/propane gas conversion kit (OEM part number 550003778) is a factory-approved solution designed for Lennox GWB84 series boilers. This genuine Lennox conversion kit allows qualified HVAC professionals to safely convert a compatible GWB84 boiler from natural gas to liquid propane operation while maintaining proper combustion characteristics and system efficiency.

Engineered to Lennox OEM specifications, this kit includes the required components to modify the boiler’s gas system for propane use, ensuring correct fuel delivery and reliable performance after conversion. Using an original Lennox conversion kit helps protect equipment integrity, supports manufacturer-recommended operation, and ensures long-term reliability in propane-fueled installations. Ideal for residential and light commercial boiler applications where LP fuel is required.

 

Product Overview:

The Lennox 20X10 / 550003778 conversion kit is specifically intended for GWB84 boilers originally configured for natural gas. It enables a proper fuel changeover to LP/propane when natural gas is unavailable or when site requirements change. OEM design ensures precise fitment and compatibility with the boiler’s gas train components.

 

Specifications:

Brand: Lennox
Part Number: 20X10
OEM Number: 550003778
Gas Type Conversion: Natural Gas to LP/Propane
Application: Lennox GWB84 Series Boilers
Installation: Professional installation required