Living filters

Energysaving miniature rainforests


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We need the air we breathe indoors to be clean and fresh, but every day we’re exposed to airborne pollutants in our indoor environment. Normal ventilation filters capture larger particles while smaller ones are released and dispersed into the supply air.
A living filter, on the other hand, captures these small particles.
A living filter is made up of plants, soil and water and functions just like a miniature rainforest. The air passes through the plants and is absorbed through the leaves’ stomata. Dust sticks to the surface of the leaves and gets washed down into to the soil, which absorbs and breaks down the airborne pollutants that get transported in dust.
The filter moistens dry and warm indoor air to a comfortable level and temperature. This reduces irritation in mucous membranes and makes them less susceptible to airborne infections. A living filter saves energy by cleaning and oxidising indoor air without needing to take in outside air, which has to be heated up or cooled down and circulated around the building. It’s also beautiful to look at, with its lush greenery and natural light. A living filter creates healthy indoor air all day long. On a field trip to Living filter you’ll learn about the principles behind the filter and you can visit a mechanics workshop where the filter has been installed, or Sundsvall’s Timrå airport, which has a 45-metre long living filter installed.
You can also visit Örnsköldsvik’s new municipal hall where they have installed a 60-metre long living filter, which is beautifully integrated into its architecture. The filter has been placed high up in the building close to light coming in from openings in the roof and walls.

Town: Sundsvall
Find us: Skönsbergsvägen 63
Contact: Olle Bergseije
Telephone: 0+46 (0)70-872 03 04
Visiting: Year-round
Duration: 2 hours
Languages: Swedish & English

Miljöteknik, energi & klimat