3-Star vs 5-Star AC: Which one should we buy ?

Last updated on April 5th, 2025 at 02:18 pm

With rising temperatures and increasing energy costs, choosing an air conditioner (AC) that balances cooling performance and energy efficiency is crucial. The Bureau of Energy Efficiency (BEE) assigns star ratings (ranging from 1 to 5) based on the Indian Seasonal Energy Efficiency Ratio (ISEER), with higher star ratings indicating better energy efficiency. But when choosing between a 3-star and 5-star AC, which one should you buy?

Let’s compare them in detail.

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1. Energy Efficiency & Power Consumption

• 3-Star AC: Moderate energy efficiency. Suitable for moderate usage (4–6 hours per day).
• 5-Star AC: Higher energy efficiency. Ideal for heavy usage (8+ hours per day) and long-term savings.

Star Rating	Approx. ISEER Value	Power Consumption (1.5 Ton)
3-Star	3.50 – 3.80	~1.38 – 1.51 kW/hour
5-Star	5+	~1 – 0.94 kW/hour

2. Initial Cost & Investment

• 3-Star AC: More affordable upfront. Typically costs 10–20% less than a 5-star AC of the same capacity.
• 5-Star AC: Higher initial cost but pays off in long-term electricity savings.

3. Electricity Bills & Savings

• If your daily AC usage is low (4–5 hours/day), the savings from a 5-star AC may not justify the extra cost.
• If you run the AC for long hours (8+ hours/day), a 5-star AC will significantly reduce your electricity bill over time.

4. Durability & Performance

• 5-Star ACs often come with advanced features like inverter technology, better compressors, and improved cooling efficiency, ensuring longer life and reduced wear and tear.
• 3-Star ACs still perform well but may not be as efficient in maintaining a consistent temperature over prolonged usage.

5. Eco-Friendliness & Carbon Footprint

• 5-Star ACs consume less power, leading to lower carbon emissions.
• If environmental impact is a concern, opting for a 5-star AC is the better choice.

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Which One Should You Buy?

Choose a 3-Star AC If:

✅ You use the AC for limited hours per day (4–6 hours).
✅ You have budget constraints and want an affordable option.
✅ You live in a place where cooling is needed only seasonally (not year-round).

Choose a 5-Star AC If:

✅ You use the AC for extended hours (8+ hours daily).
✅ You want long-term savings on electricity bills.
✅ You live in a hot climate where AC usage is frequent.
✅ You prefer an eco-friendly and future-proof investment.

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Recommendation :

If your AC usage is limited, a 3-star AC is a cost-effective choice. However, if you run your AC for long hours daily, investing in a 5-star AC will save you more money in the long run despite the higher upfront cost. As Star rating keep on changing periodically, check ISEER value for making right decision. Also remember with long term use of AC, our habit for operating ac for longer duration also increases.

Consider your budget, electricity costs, and usage patterns before making a decision. Investing wisely in an energy-efficient AC can lead to comfort, savings, and sustainability!

For detailed understanding on star rating, please click here.

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