AJ Baker & Sons Pty Ltd is a family owned West Australian company, which has been involved in the commercial refrigeration and air conditioning industry in Australia since 1920. With a national presence in Perth, Brisbane, Melbourne, Sydney and now Adelaide, the company offers installation and maintenance services to the supermarket, commercial food service, entertainment, hospitality and mining industries. We are one of the pioneers in natural refrigerants, with over 300 cascade CO2 supermarket installations, plus 10 state of the art transcritical CO2 installations operational in Australia. The company is also the Australian distributor for the market leading Electronic Shelf Labeling system (ESL) SES.