I guess I’ll have to try it with the cover on or just find a different thermometer at some point. I agree that these temps seem unreasonably low considering the tube is outputting 1400-1500 watts keydown. I checked it again and don’t see anything over 130-140 degrees Fahrenheit. Something’s amiss here and I’m not comfortable sitting here pushing this thing this hard for inaccurate results. The stock blower moves plenty of air out of the upper vent holes above the tube when in use. Maybe it’s always been fine and I’m just crazy lol.