AC Guide · Buying

3 Star vs 5 Star AC: is a 5 Star worth it?

By Saheb Sareen. Updated 2026-10-30.

The answer

Buy a 5 Star if you run the AC through most of the day. For nights or a few hours, buy a 3 Star.^1,8

• A 1.5 ton 5 Star costs about ₹9,500 more today. Only long hours earn that back.^10,2
• At 12 hours a day, it pays back in about 3 years. At 4 hours, about 10 years.^2,10
• Top floor or open area? Read our inverter guide first. Want an inverter there anyway? Take the 5 Star. It cools fully up to 46°C outside.^1,7

Watch: the 5 Star earning back its extra price

1. The 5 Star costs ₹9,500 more today. Its line starts higher.
2. Each year it saves about ₹1,900 on electricity. Its line climbs slower.
3. After about 5 years the lines cross. The extra price is back.
4. After 10 years, the 5 Star is about ₹9,800 ahead.

Price plus electricity, from each AC's star label. The 1.5 ton FTKC50 3 Star and FTKU50 5 Star, at ₹8 a unit.^2,10

3 Star or 5 Star: which is better for your floor and hours?

The rule: night or a few hours, a 3 Star. Most of the day, a 5 Star. A 5 Star is shown where it pays back its extra price within 5 years.^8,2,10

How much does a 5 Star AC save in a year?

Both ACs are from Daikin's Standard line, both with the piping kit. So the ₹9,500 gap is only the stars. Units are from each star label, at 8 hours a day for 8 months. Your bill per unit grows as you use more. ₹4.50 and ₹6.50 are Delhi's middle slabs. ₹8 is the top one.^2,10,11

5 Star AC: pros and cons

Pros

• It uses 23% fewer units than the 3 Star.²
• It saves about ₹1,900 a year at 8 hours a day.²
• It cools fully up to 46°C outside. The 3 Star does up to 43°C.⁷

Cons

• It costs about ₹9,500 more today.¹⁰
• At night or for a few hours, it takes about 10 years or more to pay back.^2,8

3 Star AC: pros and cons

Pros

• It costs less to buy.¹⁰
• It is the better buy for nights and short use.⁸
• It gets the same Daikin warranty as a 5 Star.⁹

Cons

• It uses more electricity for the same cooling.²
• On a top floor on the hottest days, it can't keep the room at 24°C. The 5 Star can.⁸

What do the stars on an AC mean?

• The government gives every AC its stars, from 1 to 5.⁴
• More stars means less electricity for the same cooling.⁴
• ISEER is like a car's mileage. It is the cooling you get for each unit of electricity.⁵

How long does a 5 Star AC take to pay back?

• At 1.5 ton, it takes about 10 years at 4 hours a day.^2,10
• It takes about 5 years at 8 hours, and about 3 years at 12 hours.^2,10
• At 1.8 ton the gap is bigger. It takes about 8 years at 8 hours a day.^2,10

Is a 5 Star AC better for a top floor?

• First, read our inverter guide. A non-inverter often suits a top floor better.¹
• If you still want an inverter there, pick the 5 Star.¹
• It keeps full cooling up to 46°C outside. The 3 Star does up to 43°C.⁷

Is an old 5 Star AC as good as a new one?

• Not always. The star rules get stricter every few years.⁶
• So a 5 Star from 2018 can use more power than a 5 Star today.⁶
• To compare ACs from different years, compare the ISEER number.⁶

Questions people ask

Is a 5 Star AC worth it?

Yes, if you run it most of the day. At 8 hours a day, the extra price comes back in about 5 years. For nights only, a 3 Star is the better buy.^2,10,8

How much electricity does a 5 Star save over a 3 Star?

About 23% on the 1.5 ton ACs we sell. That is about ₹1,900 a year at 8 hours a day.²

Is a 3 Star AC good for a bedroom?

Yes, if you use it only at night. Nights are cooler, so a 5 Star saves very little. Check what size AC you need too.⁸

3 Star or 5 Star for Delhi?

For long hours in Delhi heat, a 5 Star. It keeps full cooling up to 46°C outside. For nights or short use, a 3 Star.^1,7

Does a 5 Star AC cool better?

Not because of the stars. Stars rate the electricity, not the cooling. On the ACs we sell, the 5 Star copes better with heat.^3,7

What is ISEER on the star label?

It is like a car's mileage. It shows how much cooling you get for each unit of electricity. Higher means a smaller bill.⁵

Sources

1. Our showroom's buying advice: a 5 Star for long hours, a 3 Star for nights and short use; a 5 Star if you want an inverter on a top floor (October 2026) (Citi Cool)
2. BEE star label figures from the Daikin RA Master Catalogue 2026 (ISEER and units a year), shown on each product page (Daikin)
3. 3-Star or 5-Star: What's the difference? (Daikin India)
4. Is the star rating important in an air conditioner? (Daikin India)
5. Indian Seasonal Energy Efficiency Ratio: how BEE rates an AC over 1,600 hours a year (Vikaspedia, Government of India)
6. Star Labelling Programme: ISEER needed for 1 Star and 5 Star split ACs, 2009 to 2024, 10 May 2023 (PIB, Ministry of Power)
7. Daikin's full-cooling outside temperature for each series, as used in our AC calculator (Daikin · Citi Cool engineering)
8. Our room model: Daikin's method for how much heat gets into a room, hour by hour, on IMD weather for Delhi, as in our AC calculator (Citi Cool engineering)
9. Product Warranty (Daikin India)
10. Daikin AC prices and stock today (citicool.in)
11. Electricity tariff schedule, domestic energy charges by slab (FY 2019-20) (Delhi Electricity Regulatory Commission)

More AC questions, answered

• Which ton AC does my room need?: Sized for your city's hottest day, with the right AC from stock.
• Inverter vs non-inverter AC: which one should you buy?: Inverter for a bedroom used 6+ hours a day. Non-inverter for short use, a top floor or a hall.
• How many units does a 1.5 ton AC use in an hour?: About half a unit on the label. Two to three times that on a top floor.
• What is the difference between an inverter and a non-inverter AC?: One is fully on or off. The other slows down. Watch both work.
• What is the best temperature to set your AC?: 24°C, and 26°C at night. Never 18°C.
• How much does AC installation cost in Delhi?: About ₹2,700 to fit a split AC, plus copper pipe by the metre. Our rate card, item by item.
• VRV or split AC: which is better for your home?: VRV when you have no space for outdoor units. It costs more to buy and less to run.
• What size AC do I need for my room?: A 1.5 ton for most bedrooms. A 5 Star or a bigger AC on a top floor.
• Hot and cold AC: is it worth it in Delhi?: Yes, for a bedroom you use in winter. One AC all year, and no fumes.
• Coming next: Daikin AC error codes: what they mean
• Coming next: What is ISEER? The star label number explained
• Coming next: Cassette AC or split AC?

Want help choosing the right star rating? Call sales on 77039 00307, or book a ₹99 video call with an engineer, adjusted against your order.