Jan 27, 2022 · The 18,000 BTU double ring side burner features dual control knobs so you can use a single burner ring for simmering, or crank up both burners to boil 15-quarts of water in as little as 18 minutes. Three(3) 8,000 BTU gas burners, provide evenly-distributed heat across a 500 square-inch cooking surface.