Laars Heating Systems 10449513 High-Tension Lead

The Laars Heating Systems 10449513 High-Tension Lead is an essential ignition component designed for high-performance thermal applications. Measuring 15 inches in length, this XH (Extra High) specification lead is engineered to provide superior electrical conductivity and insulation, ensuring a consistent spark for efficient burner ignition. It serves as a direct replacement for Laars boiler parts, specifically within the MightyTherm series, including models 175, 250, 325, and 400. This high voltage ignition cable is built to withstand internal cabinet heat and the demanding electrical requirements of modern direct spark ignition (DSI) systems.

For field technicians, maintaining the integrity of the high-tension circuit is critical to preventing misfires or "High Snap KV" errors on diagnostic equipment. The 10449513 lead features high-grade silicone insulation to prevent voltage leakage to the ground, which is a common cause of ignition failure in older or worn systems. When performing a Laars heater repair, ensuring the terminal is firmly seated on the spark plug nut is vital for maximizing energy transfer. This 15" XH lead provides the necessary reach and durability for stable operation in both residential and commercial Laars furnace applications.

Key Benefits

• Optimized Conductivity: Features an Extra High (XH) specification for reliable high-voltage transmission between the transformer and igniter.
• Broad Compatibility: Engineered specifically for Laars equipment, including MightyTherm-175 through MightyTherm-400 models.
• Heat-Resistant Insulation: Heavy-duty jacket prevents arcing and protects the core from thermal degradation inside the boiler cabinet.
• Precision Length: The 15-inch lead length ensures proper routing without excessive slack, minimizing the risk of interference with other components.

Common Questions

Is this lead compatible with older MightyTherm models?
Yes, the 10449513 is a standard replacement for the 15" XH lead used across several generations of the MightyTherm range (175-400 series).

What are the signs of a failing high-tension lead?
A technician should check for visible cracked insulation, carbon tracking, or audible arcing (ticking sounds) during the ignition sequence. If the burner fails to spark or experiences a "weak spark" condition, measuring the resistance of the lead with an ohmmeter is recommended.

Can I use a standard 15" ignition wire instead?
It is highly recommended to use the genuine Laars 10449513 to ensure the XH specification is met. Standard leads may not provide the same level of dielectric strength, leading to premature ignition failure.

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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.