We are one of the first companies in Greece that got involved and specialized in the design and construction of clean rooms such as pharmaceutical companies, ICU-MAF hospital facilities, negative pressure facilities, laboratories and RnD facilities, food industry, microelectronics, telecommunications, etc.

Our company, through its organization (commercial department, clean rooms department) and continuous research, knowledge, experience, state-of-the-art equipment, highly acclaimed staff and in collaboration with leading companies provides you with vertical solutions, covering your every need through a wide range of services and products ensuring you top quality while having a reliable partner always by your side.

We keep up with our creative course in time with devotion to our fellow human beings and the environment, drawing strength from the trust that you have shown us for so many years.

For the good quality of AIR and LIFE.


  • 1980

    Gerasimos Kalavrias founds our company AAC KALAVRIAS which operates in the field of designing and installing ventilation - air conditioning systems

  • 1990

    Our company transfers to larger offices, enters into collaborations with leading companies abroad, developes its commercial department and begins specializing in the design and construction of clean rooms.

  • 2001

    Our company continues developing, transfers once again to its current offices, reinforces its collaborations, participates in exhibitions and conferences throughout Greece and abroad.

  • 2007

    International conferences in Greece on the subject of clean rooms are organized and speeches are given within the coountry and abroad.

  • 2011

    Our company in order to organize and manage its projects and services in the best possible way creates the GA CALAVRIAS technical construction

  • 2019

    In 2019 we proceed with a complete renewal in all departments, in the context of upgrade and reorganization, all departments are reunited in AAC CALAVRIAS