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1.5 Ton 3 Star Inverter Split AC (CS/CU-SU18BKY3T) vs 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)

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Quick verdict

  • 1.5 Ton 3 Star Inverter Split AC (CS/CU-SU18BKY3T) is better for cooling in extreme heat.
  • 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) leads on build.
  • 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) offers better overall value (15.6 points per ₹10,000).
  • 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) has the higher Comparezi Score (54.6).
  • 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) is the cheaper option at ₹34,990.

Computed from stored specifications, the published air conditioners scoring rules and recorded prices. Not an opinion.

Winners by area

Cooling and efficiency Tie
Build 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)
Value 1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)

Specifications side by side

Spec
1.5 Ton 3 Star Inverter Split AC (CS/CU-SU18BKY3T)
1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)
Overview
Type
Split
Split
Capacity
1.5 ton
1 ton
Energy rating
3 star
3 star
Inverter compressor
Yes
Yes
Model number
CS/CU-SU18BKY3T
CS/CU-SU12BKY3T
Launched
2026
2026
Cooling and efficiency
ISEER
4.5 W/W
4.5 W/W
Cooling capacity
5,100 W (better)
3,350 W
Annual energy use
877.07 kWh/year
576.31 kWh/year (better)
Cools at outdoor temperature up to
55 °C
55 °C
Convertible modes
8-in-1
8-in-1
Build
Condenser coil
Copper
Copper
Copper condenser
Yes
Yes
Refrigerant
R32
R32
Noise level
38 dB
36 dB (better)
Features
Filters
PM0.1 Filter
PM0.1 Filter
Self-clean
Yes
Yes
Colours
White
White
Warranty
Product warranty
1 year
1 year
Compressor warranty
10 years
10 years
Warranty terms
1 year on product, +4 years on PCB and +9 years on compressor.
1 year on product, +4 years on PCB and +9 years on compressor.

A tick marks the better value where the category rules say higher (or lower) is better. Text values are shown without a winner. Ties have no winner.

Price and availability

Store links are not paid: prices are copied from each store's own page with the date checked, and Comparezi earns only from labelled ads. How we earn

1.5 Ton 3 Star Inverter Split AC (CS/CU-SU18BKY3T)

₹36,990

1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)

₹34,990

Pros and cons

1.5 Ton 3 Star Inverter Split AC (CS/CU-SU18BKY3T)

  • Con: Louder indoor unit than 82% of the 51 1.5-ton split ACs on Comparezi that state it (38 dB)

1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T)

  • Con: Louder indoor unit than 89% of the 19 1-ton split ACs on Comparezi that state it (36 dB)

Which should you buy?

1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) if you want the strongest overall specification: it has the higher Comparezi Score (54.6).

1 Ton 3 Star Inverter Split AC (CS/CU-SU12BKY3T) also gives the most score per rupee, so there is no trade-off between quality and price here.

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