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1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) vs 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)

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Quick verdict

  • 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) is better for low electricity bills.
  • 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX) is better for cooling in extreme heat.
  • 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX) is better for quiet at night.
  • 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) leads on overview.
  • 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) leads on cooling and efficiency.
  • 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX) offers better overall value (16.3 points per ₹10,000).
  • 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) has the higher Comparezi Score (76.7).
  • 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX) is the cheaper option at ₹43,990.

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

Winners by area

Overview 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0)
Cooling and efficiency 1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0)
Build 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)
Value 1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)

Specifications side by side

Spec
1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0)
1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)
Overview
Type
Split
Split
Capacity
1.5 ton
1.5 ton
Energy rating
5 star (better)
4 star
Inverter compressor
Yes
Yes
Model number
CAI18CE5R36F0
CS/CU-NU18BKY4WX
Launched
—
2026
Cooling and efficiency
ISEER
5.6 W/W (better)
5.2 W/W
Star label year
2026
—
Cooling capacity
4,800 W
5,100 W (better)
Power consumption
1,100 W
—
Annual energy use
663.31 kWh/year (better)
759.55 kWh/year
Cools at outdoor temperature up to
52 °C
55 °C (better)
Convertible modes
6-in-1 (FlexiCool)
8-in-1
Build
Condenser coil
—
Copper
Copper condenser
—
Yes
Refrigerant
R32
R32
Noise level
38 dB
34 dB (better)
Features
Wi-Fi / app control
—
Yes
Filters
HD filter, PM 2.5 micron filter
PM0.1 Filter
Self-clean
Yes
Yes
Colours
—
White
Warranty
Product warranty
1 year
1 year
Compressor warranty
—
10 years
Warranty terms
Promotional 5 years comprehensive warranty: extension of warranty period for 4 years after the completion of the standard warranty, for Carrier Split Inverter ACs up to 2.0T purchased 1 Feb 2026 to 31 Dec 2026
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 5 Star Inverter Split AC (CAI18CE5R36F0)

₹76,500

1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)

₹43,990

Pros and cons

1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0)

  • Pro: BEE-label energy use of 663.3 kWh a year, lower than 93% of the 46 1.5-ton split ACs on Comparezi that state it
  • Con: Louder indoor unit than 82% of the 51 1.5-ton split ACs on Comparezi that state it (38 dB)

1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX)

  • Pro: Wi-Fi control from a phone app

Which should you buy?

1.5 Ton 5 Star Inverter Split AC (CAI18CE5R36F0) if you want the strongest overall specification: it has the higher Comparezi Score (76.7).

1.5 Ton 4 Star Inverter Split AC (CS/CU-NU18BKY4WX) if price matters most: it is the cheaper option at ₹43,990 and gives the most score per rupee .

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