Williams 8907 Conversion Kit

Williams 8907 Conversion Kit

  • $155.00


When you are tasked with a fuel transition for Monterey Plus Top Vent furnaces, the Williams 8907 Conversion Kit (part 25098) is the specified OEM solution for converting 25,000 BTU systems from Natural Gas to Liquid Propane (LP). This kit is strictly designed for heaters manufactured after 2013 equipped with Williams brand gas valves. As a technician, you know that manifold pressure and orifice sizing are non-negotiable for safe combustion; this kit includes the precise LP gas orifices and gas valve regulator spring required to meet technical specifications and prevent sooting or flame rollout.

Installation requires a professional approach: you must verify the serial number of the unit before beginning. The first two digits of the serial denote the week, while the third and fourth digits confirm the year. The Williams 25098 conversion ensures that the 25000 BTU gas heater maintains its performance profile while operating on high-pressure propane. This is a comprehensive HVAC fuel conversion kit that includes all necessary components to modify the pilot and main burner assemblies to withstand the different caloric values and flow characteristics of liquid propane gas.

Key Benefits for the Contractor:
  • OEM Compatibility: Specifically engineered for the 25098 Series Monterey Plus furnaces using Williams-branded valves.
  • Precision Components: Includes high-grade LP gas orifices and a calibrated regulator to ensure correct manifold pressure.
  • Safety Compliance: Facilitates a code-compliant transition from Natural Gas to LP without compromising the integrity of the heat exchanger.
  • Field Reliability: Eliminates the guesswork associated with universal kits by providing exact-match furnace replacement parts.
Common Questions:
  • Does this kit work with Robertshaw valves? No, this kit is exclusively for Williams Brand Gas Valves. Check the valve body marking before attempting installation.
  • Can I use this on a pre-2013 furnace? This kit is intended for units manufactured in 2014 and later. For older models, serial number verification is required to determine if a legacy part is available.
  • Is a manometer required during setup? Yes, you must verify the manifold pressure after installing the LP conversion kit to ensure it meets the nameplate requirements for propane.

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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.

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  • Williams model 3502912.4 Natural gas to liquid propane kit

    We will also need the serial numbers to check. Thanks