A normal drying program takes about 90 minutes when using a condenser or air-flow dryer. Heat pump dryers take a little longer to dry your laundry because they use a lower drying temperature. However, they use considerably less energy and so your laundry lasts longer. Many tumble dryers have several drying programs that vary in length. For example, a fast drying program, or an eco-program that takes longer. Nowadays, many new dryers have a residual time indicator. This indicates how long it will take before your laundry is completely dry.