Innovative technologies for cleaner air

Proventia is a technology company operating in global markets. We offer solutions and services for the engine, machine and vehicle industries to help solve the global air pollution problem. We develop, design and manufacture exhaust aftertreatment systems for diesel engines, work machines and heavy vehicles. We manufacture thermal components for the insulation requirements of the machine and vehicle industries. We provide modular test laboratories and centres for electric vehicles, engines, powertrains, hybrid systems and battery packs.


Developed by professionals

Proventia's technologies are based on high-quality Finnish engineering. Our head office, research and development, and test unit assembly are based in Oulu, Finland. We have efficient manufacturing sites in Finland and the Czech Republic. Our first-rate audited subcontracting chain complements our own production. Our sales and support functions are available anywhere our customers need us. Proventia's technologies stand for cleaner air on every continent – for all of us.


Proventia Group Oy started its operations in 2000 as a development company, including subsidiaries specialized in environmental, energy and other technologies. One of these subsidiaries was Finnkatalyt Oy, established in 1994. It produced solutions such as exhaust aftertreatment systems for small petrol engines. In 2007, Finnkatalyt became Proventia Emission Control Oy, and the company shifted its focus to large diesel engines.

In 2012, Proventia focused on the emission control business. At the same time, the management of Proventia Group and Proventia Emission Control were merged in a single organisation. In 2015, Proventia expanded its business operations from exhaust aftertreatment systems to modular test solutions and thermal components, and Proventia Emission Control became Proventia Oy in 2017.

Today, Proventia employs 150 professionals and specialists in Finland and the Czech Republic.