Question: what is the difference between star ratings in ac?
Answer: Overview of the Star Rating System The higher the number of stars, the more efficient the appliance will be. The range of the star rating system is 1 star to 5 stars. So, there will be a difference between a 3-star AC and a 5-star AC. In simple words, a 5-star AC would be more power-efficient than a 3-star AC.