Modern high-efficiency gas furnaces can convert almost 100% of ... reach in and touch the blower motor to see if it’s hot. If so, that indicates it tried to start, but can’t.

Furnace igniters work by creating a spark to cause ignition, or by producing an extremely hot surface that ignites the gas as it passes. Blower fan: A small electric fan and motor that directs ...

The EL297V gas furnace, recognized for its innovative ... It features a two-stage gas valve and a variable-speed blower motor to help deliver consistent performance while ensuring quiet operation ...