India, July 2 -- Every summer, thousands of buyers walk into stores or browse online with one question in mind: Should I spend more on a 5-star air conditioner or save money with a 3-star model? Since electricity bills continue to rise, energy efficiency has become just as important as cooling performance.

But here's what many people don't realise. A higher star rating does not automatically make an AC the best choice for every home. The right decision depends on how often you use your air conditioner, the size of your room, your local climate, and how long you plan to keep the appliance. Paying extra for a 5-star AC can lead to significant savings over time, but only under certain conditions.

If you're planning to buy a new air conditi...