Furnaces that burn fuel need an igniter. The spark igniter on oil furnaces and some gas ones typically generates an electronic spark; you can usually hear it clicking when the furnace starts up.

This article deals with flame rectification as it applies to direct spark ignition (DSI) modules ... All modules are for low-voltage (24 VAC nominal) application on gas-fired furnaces. When powered by ...

This step applies to older models since RV manufacturers use a direct spark ignition instead. Then, it’s on to the propane tank. Check that it’s on and ready to fire. The next thing to do is to ...

The hot surface igniter started being used in place of spark ignition in residential gas-fired furnaces as early as the early 1990s. Advantages of hot surface igniters over spark ignition were: The ...