The dryer exhaust temperature shouldn’t go over 200°F, as the temperature rising above the max temp could ignite the lint in your dryer vent. The moist air generated by running your dryer should vent directly through your dryer vent run and out the dryer vent on the outside your house. When that air can’t escape, it gives rise to higher and higher temperatures. Running your dryer when... https://dryerventheroes.com/blog/how-hot-does-a-dryer-vent-get/