What is a dryer

Condenser dryer or heat pump dryer?

Condenser dryer or heat pump dryer - which device is better for me?

Two types of dryers are mainly used to dry laundry today: Condenser dryer and Heat pump dryer.

We'll show you the differences and which dryer suits you better. Here you can see the annual electricity consumption in kilowatt hours (kWh) per year. The approximate cost per kWh is around 30 cents.

You can already see one here great electricity savings when buying a heat pump dryer with a lot of use.

We compare two test winners

Heat pump dryerCondenser dryer
AEG T9DE87685Bosch WTG86400
Energy efficiency classA +++ B.
Capacity 8 kg 8 kg
Kilowatt hours per year176 kWh / year 561 kWh / year
Stiftung Warentest 1.7 (good) - 09/2018 2.6 (Satisfactory) - 09/2016
SpecialtyTest winner of its kind Test winner of its kind
Approximate price900 euros380 euros
Amazon.de ▶ Check price ▶ Check price

The advantages of a condenser dryer and a heat pump dryer

Condenser dryer

  • simple, well-engineered construction
  • little susceptible to failure
  • low purchase price

Heat pump dryer

  • low power consumption
  • hardly any moisture and heat are released into the environment
  • convenient operation

The disadvantages of condensation and heat pump dryers

Condenser dryer

  • high energy consumption
  • The indoor climate is negatively influenced
  • decreasing efficiency at high ambient temperatures

Heat pump dryer

  • high purchase price
  • Operating cycle takes a long time
  • is more prone to disturbances
Who should buy which tumble dryer?

Condenser dryer are suitable for consumers who only occasionally need to tumble dry their laundry and can usually hang them outdoors. There are inexpensive and efficiently working tumble dryers for this purpose.

Condenser dryers are less suitable for installation in living areas because they give off heat and moisture into the environment. This promotes mold growth. The best place for a condenser dryer is a cool room with good ventilation.

How the dryer works

The basic principle is the same for both dryers. The wet laundry is placed in a rotating steel drum through which hot air is blown. Hot air can hold more moisture than cold air. Because of this, the water in the wet laundry evaporates and passes into the exhaust air as water vapor, which is then saturated with moisture.

In a condenser dryer, the warm, humid air flows past a component with cooling fins, the condenser. The condenser is so cold that the exhaust air is cooled to below the dew point. That means it can no longer hold the moisture. It condenses on the condenser in the form of fine droplets that collect in the condensate container. The dehumidified exhaust air is discharged into the environment. The condenser is either cooled with ambient air or with water.

With the heat pump dryer, the air circulates in a closed circuit. The dry, heated air is blown into the drum, where it absorbs moisture and cools down. It flows along the cold side of the heat pump. It cools down to below the dew point. The moisture condenses and collects in the condensate container. When it cools down, the air transfers its heat to a refrigerant in the evaporator. This is then heated, compressed and evaporated. The gaseous refrigerant expands on the warm side of the heat pump. It releases the stored heat, which is used to preheat the process air. When it cools down, the refrigerant liquefies again and the cycle starts all over again.

Heat pump dryer are the first choice for those who want to wash their laundry regularly and who do not have the option of drying their laundry outdoors or in a drying room. Since heat pump dryers consume little electricity, they do not drive up electricity costs even if they are used frequently. Because the process air circulates in a circuit and only little heat and moisture gets into the environment, heat pump dryers can be installed almost anywhere in the house.

Compared to dryers, you save energy with the heat pump dryer and have the newer technology when you buy.