Do you smell something funny? Fred! Lay off the cheesesteaks. Northfire is happy to bring you InfernoNG – Natural Gas. Not to be confused with Fred’s gas, the Inferno natural gas model is a simple redesign so you can hook right into your existing gas line and get cooking! Same heat (1500ºF, 800ºC) for the perfect sear on your steak and quick, succulent cooking for chicken, pork, seafood and more!