enters a trap duct seal 184 and is passed out of the clothes dryer through an exhaust duct 186 after the clothing articles have been dried they are removed from the drum via the opening 162 a temperature sensor 190 and a wetness sensor 192 are often used to predict moisture content and degree of dryness of the clothing articles in the container the temperature sensor 190 senses the temperature of the heated air passing through the screen filter for example while the wetness sensor 192 senses the wetness of the clothes in the drum for example the temperature sensor may be a commercially available sensor such as an omega thermocouple type k and the wetness sensor may be a commercial off the shelf item such as a parametrics ht 119 although such commercially available components are representative only and one skilled in the art will appreciate that other components that serve these purposes could be used without departing from the scope and intent of the present disclosure the temperature and wetness sensors provide signal representations of the temperature of the heated air and the wetness of the clothes in the drum respectively to a controller 194 the controller 194 is responsive to the temperature sensor and the wetness sensor and as described below the controller may then alter operation of the dryer in various ways to save energy over known arrangements including varying the temperature or flow rate of the air into the drum varying amounts of re circulated air etc it will also.