Will the star rating increase the initial cost of ACs?
In order to increase the energy efficiency, AC manufacturer needs to change the design parameters like increasing airflow, surface area of copper tubes and highly efficient compressor etc. These initiatives lead to increase in the initial cost of the star rated ACs. However, the life cycle cost (Running cost + initial cost) is substantially lesser than ACs that without star rating.
Purchasing a 5 star AC can minimize your payback period
What is the comparative cost saving amongst different stars rated ACs?
The cost saving between each star rating depends on the equipment running hours and electricity cost / KW. It is available on energy calculator. Energy calculator has the provisions for choosing a city and possible running hours.
How do I calculate the energy consumption of 1.5 TR air conditioner in a house?
AC Operation of 8 hours a day, 252 days a year 75% compressor run time considered. This works out to 1,512 hours of operation per year, as found by BEE through one of their surveys. Please refer the Energy calculator on this site.