Lennox 28M95 Gas Valve

As a direct replacement for your failed furnace control, the Lennox 28M95 Gas Valve (Honeywell SV9520H) is a critical component for restoring safe and efficient combustion in residential heating systems. This SmartValve™ system integrates the gas flow control and ignition functions into a single robust unit, featuring a 1/2-inch inlet/outlet and a factory-calibrated 3.5" WC (water column) pressure regulator for natural gas applications. Designed with technical precision, the unit includes a 15-second pre-purge (15sPP) cycle and specialized 24V 50/60Hz electrical architecture to ensure proper drafting before ignition sequence. HVAC technicians recognize the 28M95 as identical to the 28M9501, providing broad compatibility across older Lennox G24, G26, HP18, and HP19 series furnaces. Whether you are addressing a furnace gas valve clicking symptom or a complete igniter failure, this OEM Lennox replacement part ensures the tight tolerances required for industrial-grade safety and performance. Trust this 24V gas valve to handle the ignition trials and safety shutdowns essential for your heating system.

• OEM Compatibility: This is a direct replacement for Lennox 28M9501, 20430701, and various Honeywell SV9520H models used in Armstrong, Ducane, and Concord units.
• Integrated Safety: Features a built-in 15-second pre-purge and igniter control to prevent gas buildup during startup cycles.
• Precise Regulation: Pre-set to 3.5" WC for natural gas but adjustable for specific manifold pressure requirements of high-efficiency furnaces.
• Durable Construction: Engineered to withstand thermal stress and continuous cycling in demanding HVACR environments.
• Standardized Connections: Utilizes a 1/2" NPT connection for straightforward mechanical integration with existing gas lines.

What are the symptoms of a faulty Lennox 28M95 gas valve?
Contractors often report that a failing SV9520H will cause the furnace to click repeatedly without igniting, or the solenoid may clunk but fail to release gas. If the hot surface igniter is glowing but no flame is present, the gas valve is likely the culprit.

Is the 28M95 interchangeable with the 28M9501?
Yes, the Lennox 28M95 and 28M9501 are functionally and physically identical. Both use the same Honeywell smart valve platform with 15-second pre-purge timing.

Can this valve be converted to Liquid Propane (LP)?
While this unit comes configured for natural gas at 3.5" WC, it can typically be converted to LP using the manufacturer-approved LP conversion kit (sold separately) to adjust the regulator spring for higher pressure.

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.