A 3-star AC is more affordable initially but consumes more electricity, making it suitable for occasional use. A 5-star AC, while costlier upfront, is highly energy-efficient and reduces long-term electricity bills, ideal for frequent or heavy use. If your AC usage is high, the energy savings from a 5-star unit outweigh the initial cost. For minimal use, a 3-star AC offers better value. Consider factors like room size, usage, and budget to decide which aligns with your needs and long-term savings goals.

The lifespan of a split AC typically ranges from 10 to 15 years, depending on factors such as brand, usage, maintenance, and installation quality. Regular servicing, like cleaning filters and checking refrigerant levels, can extend its life. Proper installation, avoiding overuse, and ensuring the unit isn't running at full capacity all the time also contribute to longevity. If maintained well, some split ACs can last even longer, but efficiency may reduce over time, requiring repairs or eventual replacement.

To decide the AC capacity, consider the room size, insulation, and number of occupants. For a standard room with normal insulation, a 1-ton AC is ideal for spaces up to 120 sq. ft., while a 1.5-ton AC suits rooms between 120-180 sq. ft. Larger rooms may require a 2-ton or higher capacity. Additionally, factors like sunlight exposure, electrical appliances, and room height can affect cooling needs. It’s important to match the AC capacity to the room size for optimal performance and energy efficiency.