You don’t have to know much about how your gas furnace runs other than the basics about an ignition system (either a standing pilot light or an electronic igniter) lighting the gas burner flames that generate the heat that in turn is blown into the ventilation system.
So when the burners in your gas furnace won’t ignite, you know you’ve got a problem. But what kind of problem, and how big is it? There may be a simple explanation, or you may need to call our technicians for heater repair in Bethesda, MD. When in doubt, always play it safe and let certified professionals examine the issue—gas furnaces should never have amateur repairs!