The change means the star rating now reflects real-life cooling performance more accurately rather than just controlled test results. The rating is aimed at helping households better identify more energy-efficient air conditioner units which are usually pricier. Amar Hisham said the revised rating system will help households opt for models which could deliver the same level of comfort using less electricity. It does not mean that existing air conditioners suddenly become inefficient overnight. On the revised rating system, Amar Hisham said labels alone might not be enough to change buying behaviour, mainly among lower-income households.
