It doesn't look like Teflon, but I can't be sure.....we have been opening 2 windows, it has o temp setting, just turns on and heats to a pre set temp, but not sure what that is. I will try using a thermometer and check it. Didn't really do any research cause I thought it would be safe,but now I am worried...my mistake....my kids love it and want to deep fry everything.