The One Tonne Life project has ended and the content on this web page is static and is not updated any more. The project was unique and pioneering, making the conclusions and all information connected to the project just as interesting and up-to-date today as when it was run. Read more about the project and get inspired! (March 2017)

One Tonne Life

How energy-efficient can a tumble drier be?

The tumble-drier is the item of household machinery with the worst reputation from the viewpoint of energy consumption. But the fact is that if you live in a Nordic climate and dry your clothes during the winter months using a Siemens tumble drier featuring a built-in heat pump, it is actually more energy-efficient than hanging up your clothes to dry indoors. This is because the moist air that exits the laundry drying room has to be heated up, and this process uses more energy than the tumble drier does.

The One Tonne Life house is equipped with a Siemens tumble drier featuring a heat pump. It consumes 50 percent less energy than a Class A drier, in other words A-50%. Thanks to a steady flow of air combined with heat pump technology, it is possible to maintain a lower temperature without impacting efficiency. A lower temperature makes the tumble drier more economical to operate, at the same time as it dries the clothes more gently.

Article number: WT 46W571DN

Hans Söderberg, Siemens

What is One Tonne Life?

Is it possible to live carbon neutral today?

Every Swede contributes to the greenhouse effect with six to eight tonnes of CO2 per year.

With energy-smart housing, electric cars and clean energy, we could go on living almost as usual. Couldn't we? What does it really take for a family to live carbon neutral?