CHENNAI: LG Electronics has launched star rated air conditioners. Simultaneously the company has invested Rs. 5 crore in the installation of balanced ambient calorimeter at its Greater Noida facility. The company has already launched four-star and five-star models in split type air conditioners as a voluntary participant in the Bureau of Energy Efficiency's star rating programme. The balanced ambient calorimeter will ensure enhanced accuracy in measuring the energy efficiency and performance of all LG air conditioners right from the design stage, says a release.