The Pit Boss said 520F which i think is around max , I didnt wait any longer to find out, it was about 10-15 minutes to warm up . Warm up with the heat plate closed, then open it to expose flame , it comes thru the heat plate and barely kisses the bottom of your food . Im totally guessing here but maybe over 600 . Probably need the gun thermometer to get a an accurate reading right above flame.