Leanfil Oy

LEANFIL^®

World’s most eco-friendly bag filter

Birth history and development work

The history of Leanfil ®bag filter begins with Samu Pöri and Tommi Lustig, the staff members of the air conditioning company Ilmastointipuhdistus PoLu Oy. When changing filters, they started to wonder why used filters and frames were always disposed of as mixed waste. If recycled correctly, the bag element should go to mixed waste and the frame, often made of galvanized steel, should be sorted as metal. At the same time, they wondered why good frames must be thrown away in the first place when they could be used several times. In addition, Pöri and Lustig were frustrated by transporting large and heavy filter boxes to engine rooms and used bag filters to dumpsters and sorting stations. They concluded that the main reason for the problem was that because the frame could not be meaningfully detached from the filter element, the bag filter and the frame were always handled as a single unit.

Pöri and Lustig had a burning desire to develop the industry, and finally they invented a new product for the bag filter market, with a filter that could be detached from the frame and a frame that could be used during the whole life cycle of the ventilation unit. The invention led to submitting a patent application internationally and starting the production.