Lennox 19W61 Ignitor

When you're troubleshooting a Lennox gas furnace that won't kick over, the Lennox 19W61 Ignitor is often the primary suspect. As a veteran-grade 95V silicon nitride ignitor, this assembly is engineered to provide high-durability ignition in demanding residential and commercial applications. This part is the direct replacement for 75M21, 75M2101, and 19W6101, making it a versatile addition to any service truck. Built with a robust silicon nitride element, it offers a faster 20-second warm-up time and superior mechanical strength compared to older silicon carbide versions.

The Lennox 19W61 (also indexed as LB-112237A) features a 12-inch lead wire set and a standard 2-pin AMP connector for a true plug-and-play fit. With a nominal resistance range of 25-47 Ohms at room temperature, it ensures precise current draw and reliable communication with the furnace ignition control board. Whether you are dealing with a G40 or G43 series unit, this OEM furnace replacement part eliminates the need for field modifications, ensuring your furnace ignition system returns to peak performance immediately.

• OEM Compatibility: Exact replacement for 75M21 and 19W6101, ensuring a perfect physical and electrical fit.
• Silicon Nitride Construction: Provides greater resistance to oxidation and physical damage than standard carbide ignitors.
• Standardized Connectivity: Equipped with a 12" lead and a 2-pin connector for rapid field installation.
• Universal 95V Rating: Designed specifically for HVAC systems utilizing a 95V ignition circuit.

• Why is my Lennox furnace ignitor not glowing? This typically points to a cracked element or a faulty ignition control board. Always check for 95V at the connector during the startup sequence.
• Can I touch the 19W61 element during installation? No. Even though silicon nitride is durable, skin oils can create hot spots. Always handle the assembly by the ceramic base or mounting bracket.
• How do I test if the Lennox 19W61 is bad? Use a multimeter to check for continuity. A healthy Lennox 19W61 ignitor should read between 25 and 47 Ohms; an infinite or "Open" reading indicates a failed element.

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.