Best Energy-Efficient ACs for Powerful and Cost-Effective Cooling

This article will give you information about some of the best 1.5 ton split air conditioning units by trusted branAre you searching for both ways to stay cool in the heat and lower your electrical costs? If you're searching for an option to still be cool in the heat while lowering your energy usage, then it makes sense to choose an energy-efficient air conditioning unit. d names like LG, Haier, Daikin, Blue Star, and Hitachi, which you can place in a medium-sized room in India.

Which AC Brand Is Most Reliable For Fast Cooling And Power-Saving In 2025?

S.No.

Top Products

Feature

Rating

01

Haier 1.5 Ton 5 Star Triple Inverter Split AC 

HD filter 

3.6/5

02

LG 1.5 Ton 5 Star DUAL Inverter Split AC

Fast cooling 

3.9/5 

03

Daikin 1.5 Ton 3 Star Inverter Split AC 

Dew clean technology 

3.9/5

04

Blue Star 1.5 Ton 5 Star, 60-Month Warranty, Wi-Fi Smart Inverter Split AC 

4-way swing 

3.8/5

05

Hitachi 1.5 Ton Class 5 Star, 4-Way Swing, ice Clean, Xpandable+, Inverter Split AC

Ice clean 

4/5

1. Haier 1.5 Ton 5 Star Triple Inverter Split AC 

This Haier air conditioner is equipped with superior Triple Inverter technology that allows it to cool very quickly in only 10 seconds and maintain a 5-star energy efficiency rating. With its 7-in-1 convertible modes, you can adjust power consumption according to your requirements and the Frost Self-Clean feature guarantees better hygiene. It is built keeping in mind the Indian summers and operates in 60°C ambient temperatures.

Specifications:

Brand: Haier 

Model: HSU18K-PYSS5BN-INV

Energy Rating: 5 Star (ISEER: 5.05)

Capacity: ‎1.5 Tons

Annual Energy Usage: ‎‎‎744 kWh

Noise Level: ‎‎‎34 dB

Pros:

Triple Inverter For Rapid Room Cooling

Frost Self-Clean For Removing Piled-Up Dust And Germs

ECO Mode To Lower The Power Consumption

Cons:

A few users faced issues with the leakage 

2. LG 1.5 Ton 5 Star DUAL Inverter Split AC

This LG AC is equipped with a dual inverter compressor and AI convertible modes for better cooling with less energy The AC can provide fast cooling with VIRAAT Mode 116%, an HD filter, and Ocean Black Protection for durability and better air quality. It operates quietly (31 dB), making it ideal for bedrooms.

Specifications:

Brand: LG

Model: ‎US-Q19YNZE

Energy Rating: 5 Star (ISEER: 5.20)

Capacity: ‎1.5 Tons

Annual Energy Usage: 744.75 kWh

Noise Level: ‎‎31 dB

Pros:

Ocean Black Protection For Long-Lasting AC Build

AI Mode For Auto Adjustment of Speed 

Dehumidifier For Monsoon Season Comfort

Cons:

No WiFi

3. Daikin 1.5 Ton 3 Star Inverter Split AC 

Paired with Japanese creativity, this Daikin air conditioner has efficient cooling with an incredibly quiet operation powered by its swing compressor. It also comes equipped with Dew Clean Technology to maximise cleaner air and PM2.5 filtration, as well as a triple display to monitor temperature, power usage, and errors. This is an excellent 3-star option that offers solid air-purifying qualities.

Specifications:

Brand: Daikin

Model: ‎‎MTKL50U

Energy Rating: 3 Star (ISEER: 4.00)

Capacity: 1.5 Tons

Annual Energy Usage: 966.47 kWh

Noise Level: 35 dB

Pros:

Swing Compressor For Less Noise While Operating

Display For Monitoring Power and Temperature

Dew Clean Technology For Better Air Quality 

Cons:

Few Users State That The AC Service Was Average

4. Blue Star 1.5 Ton 5 Star, 60 Months Warranty, Wi-Fi Smart Inverter Split AC 

This Blue Star air conditioning unit offers Wi-Fi smart control along with efficiency capabilities. You can temperature schedule cooling as per your comfort remotely with the Blue Star app. With 5 different convertible modes, a 4-way swing mode for equal air distribution, and an anti-corrosive coating, it is a powerful, efficient, and user-friendly air conditioner.

Specifications:

Brand: Blue Star

Model: IC518ZNURS

Energy Rating: 5 Star (ISEER: 5.05)

Capacity: 1.5 Tons

Annual Energy Usage: 783.33 kWh

Noise Level: 45 dB

Pros:

WiFi Connectivity For Smart Features 

App Control For Convenient Settings

4-Way Swing For Consistent Air Flow In Every Corner

Cons:

Pricier Than 3-Star AC Models

5. Hitachi 1.5 Ton Class 5 Star, 4-Way Swing, ice Clean, Xpandable+, Inverter Split AC

This Hitachi air conditioner has distinguishing features like Ice Clean auto-cleaning and Xpandable+ that allow for adaptable cooling even in extreme temperatures. It provides balanced airflow with its 4-way swing and has a long throw to allow for evenly cooled rooms. The illuminated remote control and SmartView display make it easy to use.

Specifications:

Brand: HITACHI

Model: ‎‎RAS.G518PCCIBT

Energy Rating: 5 Star (ISEER: 5.00)

Capacity: ‎1.5 Tons

Annual Energy Usage: 774.58 kWh

Noise Level: 34 dB

Pros:

SmartView Display For Better Monitoring Every Setting

Xpandable+ Feature For Appropriate Cooling For Every Situation

Long Air Throw For Cooling That Reaches Every Corner

Cons:

Mixed Opinions On Remote

Select the Correct Energy-Efficient Air Conditioner

Energy Rating: Look for 5-star BEE ratings for optimal power savings.

Inverter Compressor: Allows AC to operate with a variable-speed compressor for more energy-efficient long-term operations.

Room Size Fit: For rooms sized between 110 and 150 sq. ft, a 1.5-tonne AC is best.

Smart Features: Additional features which may be helpful, like Wi-Fi control, the ability to switch to convertible modes, or self-cleaning.

Noise Levels: Prefer a quieter model (<35 dB), when looking for ACs for bedrooms or workspaces.