Our Current Project
0Jährige Waschmaschine

English: ‘centennial washing machine’ or ‘centenarian washing machine’

  • October 30, 2020
    Two of our experimental setups are exhibited at the Vienna Technical Museum
    We feel very honored to say, that VAB5 and VAB7 are exhibited under the same roof as Hein...
  • April 28, 2020
    Talk at Vienna Design Week 2019 available as podcast
    Vienna Design Week's team just released our talk from last year as a podcast!https://anch...
  • April 3, 2020
    aws Creative Impact granted
    Very good news! The Austria Wirtschaftsservice (aws) today granted the aws creative impac...
  • November 8, 2019
    POTENTIALe Feldkirch
    Meet us at the POTENTIALe Feldkrirch on Sunday, 10. November from 2p.m. – 5p.m. in the "A...
  • November 8, 2019
    Original Magazin
    Our experimental setup #8 is featured on the cover of issue #23 of the "Original Magazin ...
  • September 12, 2019
    Vienna Design Week 2019
    See the current state of our development at the Vienna Design Week 2019 in Festival Headqu...
  • June 6, 2019
    AK für Sie
    The Austrian Chamber of Labour featured our project in the June issue of their monthly mag...
  • May 4, 2019
    Die Presse
    The daily newspaper "Die Presse" featured our project in their issue on Saturday, 4. May 2...
  • April 27, 2019
    Maker Faire Vienna 2019
    Meet us on 4. & 5. May 10:00 – 18:00 at the Maker Faire Vienna 2019, the biggest DIY f...
  • April 26, 2019
    Distributed Design Award
    Very good news! Today we got nominated for the Distributed Design Award as part of the Mak...
  • February 12, 2019
    170. UXvienna Evening Meetup
    Sustainable devices also need good user interfaces. In the keynote 'Promoting use cases & ...
  • December 19, 2018
    aws impulse XS granted
    Excellent news! The Austria Wirtschaftsservice (aws) today granted the aws impulse XS supp...
  • December 5, 2018
    (Gartenbaukino, Welcome to Sodom)
  • December 4, 2018
    Hearing aws impulse XS
    (Jury, 20 Minutes)
  • November 26, 2018
    UX Night Vienna 2018
    Sustainable devices also need long lasting user interfaces. In the keynote 'User Interface...
  • May 6, 2018
    Thank You!
    The Maker Faire Vienna 2018 on 5. & 6. May was great! Many thanks to everyon...
  • May 5, 2018
    Radio Wien
    Our project was featured in the news at 8:00 on Radio Wien. http://wien.orf.at/radio/
  • May 5, 2018
    ORF Wien
    Our project was featured on ORF Wien. http://wien.orf.at/news/stories/2911006/
  • May 4, 2018
    Our project was featured in an article online on futurezoneand also in the print version o...
  • May 2, 2018
    Maker Faire Vienna 2018
    Meet us next weekend at the Maker Faire Vienna 2018at booth E46! https://www.makerfairevie...
  • November 27, 2017
    TV documentary 'Geplanter Murks'
    Our project was featured on TV in 'Geplanter Murks', a documentary by Anna Kathrina Wohlge...


Sustainable consumption and production patterns demand maximization of resource efficiency over their entire life cycle.

The goal of the registered association Permanere is to research and develop sustainable products and solutions.

Since 2017 the team, consisting of Peter Knobloch, Daniel Kloboucnik, Bernhard Ranner, and Billie Rehwald, is developing a resource efficient washing machine with competitive performance that can be used for 100 years and at least as long repaired.

Its design focuses entirely on maximizing service life, ease of maintenance & repair, and the availability of spare parts for all individual components.

Technical boundaries

Fundamental laws of physics and chemistry limit the continuous development of products and can only be approached to a certain extent.

Since the first automatic washing machine for households in 1937, the minimization of the  purchasing costs (determinated by the design) and the operating costs (due to the water and energy requirements) have always been goals of the continuous development of all manufacturers.

Most of the energy required by a washing machine is used for heating up the water. It is determined by the laws of physics: the temperature increase of 1 liter of water by 1 degree Celsius always requires 1.16 watt-hours. This means that the energy requirement is primarily determined by the hot water quantity and temperature.

The achieved washing performance depends not only on the temperature but also on the mechanics, chemistry and washing duration. A reduction of the energy consumption by lowering the water temperature can be compensated, within a certain limit, by an elongation of the washing time or a corresponding detergent (“Sinner’s Circle”).


1937: First automatic washing machine “Bendix Home Laundry”
© Bendix Home Appliances


Development of energy and water consumption per wash cycle
Source: Own illustration based on IKW (2019) Sustainability in the washing, care and cleaning agent industry in Germany

Until the mid-1990s, a reduction in the energy and water requirements per wash can be observed. The clear flattening of the curves from this point on indicates that the technical limits for washing machines have already been reached.

Maximization of service life

To improve the sustainability of a product, it is necessary to reduce the total resource requirements per use.


Total resource requirements

The life cycle of a product consists mainly of three phases: Production, use, recycling & disposal. A washing machine requires about 1.9 tons of natural resources in its production.

In order to assess the sustainability of a product, the expense of production, recycling and disposal must be attributed to the use phase.


Resource requirements per use

A simple option to reduce the resource requirements per use is to design the machine for longevity, maintainability, and reparability.

For products where the technical limits have already been reached, this is often the most effective option.


Reduced resource requirements per use by extending the service life

The publicly accessible repair manuals and stocking of spare parts can improve the service life even without changing the design and be an important purchase decision when buying new ones. 

Digital spare parts storage

By aligning the design with digital manufacturing processes, it is possible to produce replacement parts as needed.

Digital manufacturing processes differ from all others in the aspect, that the shapes of the parts to be produced are available exclusively as digital data, which are used directly to control machine tools. As a result, the production costs of individual pieces are low, compared to industrial processes that require a costly mold and are only economical for high quantities.

If the entire design is based on the requirement that all components, which have to be individually manufactured, can also be produced by at least one digital production method and the data is publicly available, it may also be possible to omit the stocking of spare parts.


Reibungsdämpfer, CNC lasergeschnitten

If the entire design is based on the requirement that all components, which have to be individually manufactured, can also be produced by at least one digital production method and the data is publicly available, it may also be possible to omit the stocking of spare parts.


Manufacturing processes that are economically applicable even in small quantities, e.g. 

­— CNC milling & turning
— CNC laser cutting
— CNC punching & nibbling
— CNC bending
— All 3D printing processes

Additionally possible: 

Manufacturing processes that require costly tool making, e.g. 

­— Injection moulding
­— Punching
­— Deep drawing of sheet metal

Local service providers act as producers for repair shops because of the resulting digital spare parts storage.

Caption Text1



Image by Clemens Fabry / Die Presse (2019)
Bernhard Ranner
Der ProtoTyp


Billie Rehwald
Freelance designer


Daniel Kloboucnik
Freelance designer


Peter Knobloch



Permanere – Verein zur Erforschung und Entwicklung nachhaltiger Produkte und Lösungen

Lerchenfelder Straße 78-80/10
1080 Vienna

Central association register number: 1428087425

Email: hello@permanere.org


100jährige Waschmaschine – proof of concept: funded by aws impulse XS of the BMDW handled by the aws

Many thanks to our supporters: