Heat pump dryer's drying cycle is too long

Last updated 20/04/2023 05:38


  • The drying programme takes longer than specified in the user manual
  • The drying time shown on the display does not correspond to real drying time
  • After the drying time, which is stated in the user manual, the laundry is still wet

Applies to

  • Heat pump tumble dryer


Tumble dryers that are fitted with a heat pump give very gentle and energy-efficient drying at low temperatures, but the drying time will be somewhat longer.

This is normal and not a malfunction in any way.

On these appliances, it may seem that the appliance is not heating for an extended period of time at the start of a drying cycle. This is because all the heat pump’s energy is used to heat and evaporate water/moisture in the clothing. Let the appliance run through the selected cycle until the desired drying results have been achieved according to the chosen cycle and options.

Opening the door during a cycle to check on the clothing will extend the cycle by at least half an hour each time the door is opened. This is because the heat pump takes a long time to reach the maximum working temperature in the heating system.

See the following recommendations for optimal drying results:

1. Spin the laundry well before drying (min. 800 rpm).

Drying damp clothes may lead to poor drying results or too long drying time. Spin the laundry well in the washing machine before drying.

2. Do not exceed the maximum load size.

Note: The indication of loading quantity always refers to the weight of the dry laundry.

3. Choose the right drying programme.

Make sure that the respective type of washing and the care symbols on the label of the laundry comply with the drying program. 

The wrong programme or option selection may lead to poor drying results.

Make sure that the respective type of washing and the care symbols on the label of the laundry comply with the drying programme and selected options.

Tumble dryer programs are essentially either time-controlled or humidity-controlled (automatic).

Time-controlled: If you want to finish drying clothes that are almost dry, we recommend you use the Time Drying option (over 10 minutes duration, as the last 10 minutes of cycles consist of cooling without heat.)

Humidity-controlled: Automatic drying programmes are great when you are putting your laundry into the tumble dryer straight away after being washed in the washing machine.

Automatic drying cycles cannot be used for clothing that is only slightly damp.

4. Ensure a room temperature higher than +5°C and lower than +35°C. 

The optimal room temperature to achieve the best drying results is between 19°-24°C.

5. Clean all filters and the heat exchanger regularly and carefully as described in the user manual:

  • Clean the fluff filter after each use
  • Clean the heat exchanger on a monthly basis

Refer to the article: Cleaning tumble dryer filters and condenser

6. Make sure the appliance has enough ventilation and airflow in the room where it is installed

  • Insufficient airflow around the appliance may lead to overheating, poor drying results and component failure
  • Ensure that the appliance has sufficient ventilation and airflow to work correctly.
  • The ventilation opening in the base must not be covered by a carpet, mat, or any floor covering.
  • Make sure that there is air circulation between the appliance and the floor.
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