1920   Established as Rinnai & Co.

1923   Began exports of gas appliances, including ranges, stoves, cooking appliances, water heating               units and domestic gas utilities.

1950   Reorganised as a limited company.

1955   Established Aichi Factory.

1958   Formed technological tie-up with then West German Schwank GmbH, and began
              production of infrared gas burners. Applied new technology to the development of room
              heaters and gas burners.

1960   Established Asahi Factory.

1964   Established Oguchi Factory.

1967   Established the Technology Development Centre.

1970   Established Rinnai Taiwan Corporation.

1971   Established RB Controls Co., Ltd., and Rinnai Australia Pty., Ltd.

1972   Received Ota Award from Japan Gas Association for gas high speed cooking convection
              oven.

1973   Established Rinnai (Malaysia) Sdn. Bhd.

1974   Established Rinnai Korea Corporation and Rinnai America Corporation.

1975   Established Equipamentos NGK- Rinnai Ltda, in Brazil.

1977   Established Rinnai New Zealand Ltd.

1979   Listed on the Second Section of the Nagoya Stock Exchange.
              Established Rinnai Precision Co., Ltd.
              Opened Seto Factory.

1980   Established Japan Ceramics Co., Ltd.

1982   Listed on the Second Section of the Tokyo Stock Exchange.

1983   Listed on the First Section of the Tokyo Stock Exchange.

1984   Received Ota Prize from Japan Gas Association for development of a hot - water heating
              unit equipped with a safety mechanism to prevent incomplete combustion.

1986   Received Excellent Technology Prize from Japan Gas Association as well as the first
              Chunichi Industrial Technology Award for the development of an ultra-compact hot water
              heating unit.

1988   Established P.T. Rinnai Indonesia.
              Opened Hong Kong representative office.

1990   Established Rinnai (Thailand) Co., Ltd.
              Opened Tsukuba Technology Laboratory.

1991   Established Rinnai Singapre Pte. Ltd

1993   Established Shanghai Rinnai Co., Ltd.

1994   New head office building completed.

1995   Received ISO 9001 certification for all domestic factories.

1996   Established Rinnai Holdings (Pacific) Pte. Ltd. In Singapore. Received Testing Facility
              Acceptance from International Approval Services (IAS).

1997   Received ISO 14001 certification for Oguchi Factory and Technology Development Centre.

1998    Established Rinnai Vietnam Co., Ltd.
               Established Rinnai Hong Kong Ltd.

1999   Established RG Co., Ltd.

2000   Received Ministry of International Trade and Industry’s Energy Conservation Award for its
              highly efficient condensing type gas hot - water appliances. Received ISO 14001
              certification for Seto Factory.

2001   Received Technology Prize from Japan Gas Association for its highly efficient condensing
              type gas hot - water appliances.

2003   Established Rinnai UK Ltd sales and warehouse facilities.