Robertshaw 41-402 Furnace Hot Surface Igniter

Robertshaw 41-402 Furnace Hot Surface Igniter is a premium hot surface ignition solution engineered for fast, reliable startup across a range of heating equipment. As a Type Hot Surface Igniter, it provides clean ignition without pilot lights, reducing wear and fuel waste. This model is a versatile choice for furnaces, boilers, rooftop heaters, infrared burners, and water heaters.

Built to endure demanding environments, it features a 1-1/4 inch base for secure mounting, a 19-inch lead wire for flexible routing, and operates on standard 120 Volt AC power. The ignition performance is rated to reach temperature quickly, typically igniting within about 17 seconds, helping minimize cold-start delays. Crafted from recrystallized silicon carbide, it delivers high resistance to heat and a long service life.

Whether you’re updating an old system or stocking spare parts, this igniter offers dependable operation across compatible appliances and brands that use similar specifications.

• Type: Hot Surface Igniter
• Base Size: 1-1/4 inch
• Lead Wire: 19 inches
• Voltage: 120V AC
• Ignition Time: ~17 seconds
• Material: Recrystallized Silicon Carbide