The ceramic igniter is a device used in combustion applications. It is generally a rod-shaped device that comprises an elongated tapered electrode, a central core, and two annular segments separated by an insulating layer. One annular segment is connected to a positive energy source and the other is connected to a negative source. The two annular segments are then joined to form the tip of the heater/igniter.

A ceramic igniter 30 includes a core made of silicone nitride, molybdenum disilicide, or a combination of these materials. The core is preferably surrounded by an insulative layer and two slightly converging facets. An insulative layer may extend between the facets and the back surface of the ceramic igniter.

A ceramic igniter heater can ignite a wide variety of solid fuels, including wood chips, coal briquettes, and biomass. Its fast ignition time (approx. 60 seconds) allows for a rapid conversion from room temperature to combustion. A ceramic igniter heater requires no maintenance and can be manufactured for competitive costs.

Typically, a ceramic igniter heater needs a 120-volt electric supply in order to work properly. A faulty igniter can short out or cause a furnace to malfunction. If the ignitor is damaged, you should call a professional electrician to assess the furnace's wiring.