Supco SSN21 Mini Silicon Nitride Igniter

Description

Supco SSN21 Mini Silicon Nitride Igniter Overview

The Supco SSN21 Mini Silicon Nitride Igniter is a premium hot surface igniter engineered for dependable furnace ignition performance. Designed with silicon nitride technology, this compact igniter offers significant advantages over traditional silicon carbide igniters, including greater resistance to thermal shock, a longer service life, and a lower wattage draw — making it an ideal choice for residential and light commercial heating systems.

Silicon Nitride Advantage

Silicon nitride igniters are the modern standard in hot surface ignition. Unlike silicon carbide, silicon nitride is far less brittle and far more resistant to cracking caused by vibration, rough handling, or rapid temperature cycling. This translates to fewer callbacks and longer intervals between replacements — a win for technicians and homeowners alike.

Key Features

• Silicon nitride construction for superior thermal shock resistance
• Mini form factor for compatibility with space-constrained furnace applications
• Lower wattage draw compared to traditional silicon carbide igniters
• Fast heat-up time for quick, reliable ignition cycles
• Designed for broad OEM cross-reference compatibility
• Durable build reduces risk of breakage during installation and service
• Manufactured by Supco, a trusted name in HVAC replacement components

Application

The SSN21 is suited for use in gas furnaces and heating systems requiring a compact hot surface igniter. Its mini profile makes it a practical replacement solution where standard-size igniters may not fit. Always verify compatibility with your specific furnace model before installation.

Why Choose Supco?

Supco has built a reputation for delivering reliable, high-quality HVAC replacement parts that meet or exceed OEM specifications. The SSN21 continues that tradition, offering HVAC professionals a dependable ignition solution backed by Supco’s commitment to quality and performance.