What type of igniter uses silicon carbide as a material?

The correct choice is hot surface igniter, which utilizes silicon carbide as a key material. Silicon carbide is highly effective for this application due to its ability to withstand high temperatures and its durable nature. This material heats up rapidly when an electric current is passed through it, allowing it to ignite gas when it reaches a certain temperature, typically resulting in a reliable ignition source for gas appliances.

Hot surface igniters are commonly used in modern heating systems and are appreciated for their efficiency and low maintenance demands. They work by providing a constant surface that remains hot enough to ignite the gas directly, as opposed to relying on a flame that needs to be maintained. This contrasts with other types of igniters, which function differently and may not use silicon carbide in their construction or operation.