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Flat silicon nitride ignitor with two white 12-inch leads

SUPCO

SUPCO Hot Surface Ignitor Universal 120V 12in 300F

SKU CH-AMQ4-FEACC

Universal silicon-nitride hot-surface ignitor for 120 V AC furnaces, hard-wired with a 12 in lead rated to 300 °F

  • TypeElectrical Wire Connector & Terminal Kits
  • Universal replacement fits many heating systems
  • Silicon nitride element withstands 300°F lead insulation temperature
  • 120V AC hardwired connection ensures reliable ignition
  • 12-inch lead wires provide flexible installation options
  • Flat tip design matches OEM specifications for direct fit

Universal 120V Ignitor for Furnace Repairs

The SUPCO hot surface ignitor operates at 120V AC with a flat tip and a 12 in lead wire. It uses a silicon nitride heating element rated for 300 degrees F maximum insulation temperature. The 2 1/4 in probe fits a range of OEM replacement applications. Hardwired electrical connection simplifies installation for HVAC technicians and experienced DIYers.

Capacity and Headroom for Ignition Systems

The ignitor delivers reliable starts on compatible 120V gas furnace and boiler systems. Silicon nitride construction resists thermal shock during repeated heating cycles. The 300 degree F lead insulation limit defines the maximum ambient temperature the wiring can withstand. Units in hotter compartments or with restricted airflow may exceed this thermal boundary.

Upgrades from Failed or Brittle Originals

This universal part replaces cracked or degraded OEM ignitors that cause no-heat conditions. The jump is worth it when the original element shows white deposits, hairline fractures or intermittent glowing. It does not suit appliances requiring a different voltage, probe geometry or connector style. Buyers needing a plug-and-play harness or a non-flat tip should verify compatibility before ordering.

Highlights

  • Universal replacement fits many heating systems
  • Silicon nitride element withstands 300°F lead insulation temperature
  • 120V AC hardwired connection ensures reliable ignition
  • 12-inch lead wires provide flexible installation options
  • Flat tip design matches OEM specifications for direct fit

Specifications

BrandSupco
TypeElectrical Wire Connector & Terminal Kits

Questions about this item

Will the 12‑inch leads reach the terminals on my older furnace without splicing?

The 12‑inch lead length is designed for direct hardwired connection to most standard furnace terminal blocks, eliminating the need for extensions or splices.

How can I confirm the silicon nitride element is glowing correctly after installation?

After powering the furnace, the flat tip should reach a bright orange glow within seconds; a steady glow indicates the 120V AC igniter is operating at the proper temperature.

Does the package include wire nuts or mounting hardware, or must I supply them?

The igniter ships with the 12‑inch hardwired leads and flat‑tip probe only; wire connectors, mounting brackets and any additional hardware are not included and must be sourced separately.

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