The temperature inside the drum during drying depends entirely on the drying program you have selected. With condenser dryers and airflow dryers, the temperature can be as high as 75 degrees. However, with a heat pump dryer, the air does not get warmer than 35 degrees. By drying at a lower temperature, your laundry lasts longer and you save on your energy bill. However, the drying program also takes longer when you dry at a lower temperature. For that reason, a heat pump dryer often takes longer to dry laundry than other types of dryers.