(Not shown in illustration.) Burners: Small outlets where gas emits within the furnace and is ignited into even, controlled flames. Igniter: The device responsible for lighting the gas emitted ...

If you heat your home with natural gas, oil or propane, chances are your furnace or boiler has a pilot light. With the help ...

A natural gas furnace works by igniting natural gas inside of your furnace's burner. The flames heat up a metal heat exchanger, which in turns heats incoming cold air received from your home's ...

If you have a gas furnace, it may not be receiving a steady supply of gas to the heat-generating burners. If your gas supply is off or simply insufficient, the furnace will be unable to generate ...

And also these burners, they're more expensive ... it's more likely that consumers will burn gas in their furnace, their water heater or clothes dryer. CHANG: Exactly. OK. Well, the reason ...

All high-efficiency condensing gas furnaces have the unique feature of two heat exchangers — a primary and secondary — whereas the mid-efficiency furnace only has one. The primary heat exchanger is ...

Once the furnace is powered with natural gas, it uses a pilot light or electrical ignition to start a burner that burns the fuel and activates heat exchangers to transfer heat. A fan then blows ...