Lennox 94C90 Gas Valve

The Lennox 94C90 is an OEM standard-opening natural gas valve designed for precision fuel regulation in residential and light commercial heating systems. Operating on a 24V AC control circuit, this valve features a 3/4" x 3/4" NPT connection, ensuring high-capacity flow for larger BTU furnace applications. As a direct OEM replacement gas valve, the 94C90 is identical to part number 94C9001 and is commonly found in Lennox G11 and G12 series units. It serves as a critical component in the sequence of operation, opening the main burner orifice once the inducer motor and pressure switch have verified proper venting. This HVAC replacement part is engineered to withstand the thermal cycling typical of high-efficiency furnaces, maintaining consistent manifold pressure for clean combustion. For contractors performing Lennox furnace troubleshooting, this valve provides the exact electrical specifications and physical footprint required for a fast, "drop-in" installation without the need for manifold modifications.

• Exact OEM Match: Fully replaces Lennox 94C9001, maintaining the original safety certifications and performance specs of the furnace.
• Optimal Gas Flow: Specifically calibrated for natural gas systems with a robust 3/4" inlet and outlet for high-demand heating cycles.
• Standard 24V Logic: Integrates seamlessly with existing Lennox furnace control boards and 24-volt ignition systems.
• Durable Solenoid Design: Built to provide reliable gas flow control, reducing common failure points like "sticking" or internal coil shorts.

• Is the 94C90 compatible with LP (Propane) systems? This specific model is configured for natural gas. To use it with Liquid Propane, a manufacturer-approved conversion kit involving different springs and orifices is required.
• How do I test if my 94C90 gas valve is faulty? Use a multimeter to check for 24V AC at the valve terminals during the heat call. if voltage is present after the igniter glows but the valve doesn't "click" or release gas, the internal solenoid has likely failed.
• Does this valve replace the Honeywell VR series? While Lennox often sources from Honeywell, the 94C90 is the specific Lennox-branded part number. Always verify the cross-reference on your unit’s parts list to ensure the correct internal regulator settings.

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.