Nope. The light off temp for the cat is around five hundred but once that smokes starts burning in it it ain't gonna stay at 500 for long. From our friends at Blaze King: "Full catalytic operation occurs at catalytic combustor temperatures above 700F (371C). Combustor glowing only occurs at temperatures above 1000F (538C). " ETA: " Combustor temperatures between 1400F and 1600F (760C - 870C) are common, but operating temperatures between 700F and 1400F (371C - 760C) are recommended."