Heat pump dryer or condensate dryer - a small buying and decision-making aid

Heat pump dryers have been on everyone's lips in recent years. They are praised in all magazines and relevant magazines but also by traders as true energy-saving miracles. To what extent this really applies, which savings are even possible, and where the purchase is worthwhile, we have therefore in this article once again highlighted.

Technical differences


In a nutshell, the condenser normally works with two air streams. A supply air flow is repeatedly heated by a heating element, and absorbs the moisture of the laundry.

A cooling stream cools the hot, saturated with moisture air again and causes the moisture contained condensed again and is caught in a condensation vessel or even directly derived.

Technical disadvantage is that the supply air, which is needed to dry the laundry, similar to the hair dryer must be heated continuously. That costs a lot of energy.

heat pump dryer

By contrast, the heat pump dryer only works with one air flow. The hot, damp air is not only deprived of moisture, but also the heat. This technology works much like a heat pump used for heating. That's where the name of this type of dryer comes from.

The extracted heat is then immediately transferred back to the supply air. The heat once generated is thus used again and again in the heat pump dryer. It does not need to be heated constantly. This leads to energy savings of up to 50 percent compared to conventional condensate dryers.

Cost use Bill

If one looks at the energy consumption of an average dryer, one will find that the much-vaunted savings financially worth very little. Those who rarely use their dryer, or even use it only in winter, will benefit very little from the savings in electricity.

The power consumption of a conventional condenser dryer is under optimal conditions around 3 - 4 kWh per drying cycle. This means that a saving of around 1.5 kWh can be expected per drying cycle.

In terms of money, that's less than 50 cents in electricity costs that can be saved per dryer load. If the price of electricity rises again in the future, of course, this value will be slightly higher. But you can not go for it.

In combination with the much higher initial costs, a heat pump dryer really only pays for itself if it is used very frequently.

The price of a heat pump dryer is several hundred euros higher than that of a conventional condensate dryer. Until that has worked out, usually years pass.

The service life of a heat pump dryer in comparison to the conventional condenser dryer also plays a role. The first of these devices on the market were still error-prone and had a lifespan of only a few years.

Much longer drying time

Condenser dryers work with temperatures between 100 - 125° C. By contrast, heat pump dryers produce a maximum of around 45 - 60° C. The drying time is thus significantly longer for the heat pump dryer than for the condenser dryer. In many cases, it may take three hours or more to dry the laundry. That too should be considered.

Tips & Tricks

If you buy a washing machine with higher spin tours, you can also save energy with the dryer. Skidding is about 100 times more effective than drying by warm air.

Video Board: How to stack a tumble dryer and a washing machine?