Question: what is the difference between 3star and 5 star in ac?
Answer: The difference between a 3-star and a 5-star AC is that the power consumption of a 5-star AC would be way lesser than a 3-star one. ... On the other hand, the EER of a 5-star AC is 3.3 and above. The energy efficiency of a 5 Star AC is better than 3 Star one, as the former consumes less power.