Lennox 89M57 Gas Valve

The Lennox 89M57 is a critical OEM replacement gas valve designed for single-stage heating legacy systems. This 24V gas valve is factory-configured for natural gas with a 3.5" WC manifold pressure setting, though it often includes a propane conversion kit for versatile field application. Engineered for precision, the unit features a 1/2" NPT inlet and outlet, ensuring a direct fit for standard gas manifold assemblies. As a veteran-grade HVAC replacement part, it provides the exact performance profile of the Lennox 89M5701, as these two part numbers are functionally identical. This Honeywell VR8205 series equivalent utilizes a fast-opening or slow-opening solenoid (model dependent) to manage fuel flow safely. For contractors, the 89M57 1/2" gas valve offers high-reliability regulation in both residential furnaces and light commercial boilers, maintaining consistent combustion and thermal efficiency across the heat exchange cycle without the need for extensive modification during installation.

• Exact Match Compatibility: Directly replaces 89M5701 and older LB-110676A part numbers for seamless field replacement.
• Dual-Fuel Capability: Optimized for natural gas but compatible with LP systems when using the appropriate conversion kit.
• Standardized Connections: Features 1/2-inch NPT pipe threading and 1/4-inch male quick-connect terminals for rapid wiring and plumbing.
• Industrial Grade Regulation: Maintains a steady 3.5" water column pressure to prevent burner or heat exchanger stress.

• Is the Lennox 89M57 interchangeable with the 89M5701? Yes, the Lennox 89M5701 is the identical part; these numbers are used interchangeably in manufacturer catalogs.
• What is the primary voltage requirement for this valve? This is a standard 24VAC gas valve designed to work with most Lennox ignition control boards and transformers.
• Can this valve be adjusted in the field? While factory-set to 3.5" WC, the regulator can typically be adjusted within a 3.0" to 5.0" WC range by a qualified technician to meet specific furnace gas valve manifold requirements.

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.