A new study by the Centre for Science and Environment shatters the myth of star-rated ACs. Your so-called five-star rated split AC becomes energy-inefficient as soon as the temperature soars over 40 degrees Celsius.
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AC star rating should bbe according to climate zone of the area. For example state of Rajasthane (jaselmare,curu) where Summer tempperatue rises to 50 degree C.. . Where BE certify rating at 40 degree C. We have educate every one that comfort AC temperature for human body in AC rooom is 24 degree c.+ - 1 degree C, not 19 degree c. By lowering one degee temperature AC electrical load and power consumption increases also depends on incoming power quality. Kisholoy Gupta Sustainable Energy Environmental trainer.