What makes an AC energy efficient?

Energy efficiency in ACs comes from the use of inverter technology, higher star ratings like BEE 5-star, and eco-friendly refrigerants, which cool effectively while using less power.

Is a 5-star AC better than a 3-star AC?

Yes, in terms of energy savings. While a 5-star AC may have a higher initial cost, but, over time it will consume less electricity than a 3-star AC.

What is the capacity of AC required for Indian homes?

For small rooms up to 120 sq ft, a 1-ton AC will suffice. For medium rooms up to 180 sq ft, a 1.5-ton AC works well. For larger spaces, you would likely need 2 tons or more.

Which AC is the most energy-efficient?

The Indian market offers a plethora of options, and among them, the finest AC models include: Carrier 1.5 Ton 5 Star Wi-Fi Smart Flexicool Inverter Split AC. Samsung 1.5 Ton 5 Star AI Inverter Smart Split AC. Voltas 1.5 ton 5 Star, Inverter Split AC.

Which Energy-Efficient AC Models Are Best For Indian Homes? 5-Star Options With Superior Cooling

With effective home cooling, your AC should also offer good efficiency so that you do not have to face the burden of increased electricity bills. Discover some of the top air conditioner brands with low power consumption and choose from LG, Panasonic, and more.

By : Ananyaa Bhatnagar
Last Updated on Jun 02, 2025 14:48 IST
Published on Jun 02, 2025 14:31 IST

Top Energy Efficient Split AC

Choosing the right air conditioner for your home in India isn’t just about cooling, but also about the electricity bills. With rising temperatures in India, an efficient cooling solution that does not put you under the debt of higher bills. Opting for a high-star-rated AC, usually 5-star models, can help you reduce power consumption and long-term costs. Plus, these energy-efficient air conditioners also offer quieter operations, which also adds to peace of mind. Not only the star rating, but a split AC with inverter technology can also affect the power consumption factor.

Brands like Daikin, LG, Voltas, and Panasonic offer a wide range of inverter ACs with 5-star BEE ratings that adjust their cooling power based on the room’s needs and temperature outside. This thus results in ensuring superior cooling and minimal bills. Some even come with AI-enabled features that cool faster and smarter. Discover some of the best energy efficient AC for Indian climate below.

AC Energy Efficiency Comparison India: Which Are Top Brands?

Explore some of the energy-efficient AC options that provide you with the right balance between performance, durability, and cost-saving. From tough Indian climates to the soaring heat of the sun, these air conditioner models are packed with all the latest technologies like copper condensers, convertible modes, dust filters, and a lot more, which adds to a better and more effective performance. You can also choose from premium-level brands like LG and Panasonic, or budget options like Voltas and Haier. Explore more on the top AC brands in the home solutions and electronics section below.

LG 1.5 Ton 5 Star DUAL Inverter Split AC
The LG range of air conditioners is known for its commendable performance and robust build quality. This LG split AC comes with 1.5 ton capacity, which makes it suitable for medium-sized rooms of up to 150 square feet. With that, it features a variable speed compressor that adjusts the power depending on the heat load and temperature outside. Having 6 in 1 convertible modes allows you to swiftly choose from a cooling range that suits your needs and capacity requirements the most. The LG inverter AC also features stabilizer-free operations that eliminate the need to install any external device to manage the voltage fluctuations. The Viraat mode ensures superior cooling while the Diet Mode Plus adds to minimal power consumption, leading to lower electricity bills. Having 100% Copper Tubes with Ocean Black Protection saves your appliance from rust and corrosion, ensuring longer life and minimal maintenance requirements.
Specifications
- Cooling Power: 5 Kilowatts
- Product Dimensions: 21D x 99.8W x 34.5H Centimeters
- Colour: White
- Model Number: US-Q19YNZE
- Voltage: 230 Volts
- Noise Level: 31 dB
- Filter Type: Silver Ion Filter
- Air Flow Efficiency: 653 Cubic Feet Per Minute Per Watt
- Control Method: Remote
What Makes Them An Ideal Option?
- Low noise levels ensure peace of mind.
- 5-star rating adds to high energy efficiency.
- Sleek and classy looks that blend with the interiors.
- Quality is tough and reliable.
Cons
- Water leakage-related issues were faced by some consumers.
Warranty Details
1 Year Comprehensive on Product, 5 Year on PCB and Motor & 10 Year on Compressor
01
Haier 1.5 Ton 5 Star Triple Inverter AC
Haier also offers a good range of split ACs with low power consumption. This Haier 5 star AC is equipped with triple inverter technology that ensures high energy efficiency, reduced electricity bills, low noise operations, and commendable cooling even in tough situations. Having 7 in 1 convertible modes provides you with the ease of opting for a temperature setting according to the cooling requirements and people in the room. With that, the Haier split AC 1.5 ton is equipped with a 4-way swing that circulates cool air to every corner of the room evenly. Having a 100% Copper Condenser Coil ensures better heat exchange while preventing the formation of rust and corrosion that adds to optimal cooling and minimal maintenance requirements. The Haier Inverter AC also has high ambient cooling even when the temperature rises up to 60 degrees outside.
Specifications
- Cooling Power: 17000 British Thermal Units
- Product Dimensions: 23D x 91W x 31H Centimeters
- Manufacturer Warranty: 5 years on this split air conditioner
- Colour: White
- Model Number: HSU18K-PYSS5BN-INV
- Voltage: 50 Volts
- Noise Level: 34 dB
- Filter Type: Antimicrobial Air Filter
- Air Flow Efficiency: 900 Cubic Feet Per Minute Per Watt
- Control Method: Remote
What Makes Them An Ideal Option?
- Product quality is tough and reliable.
- Inverter technology adds to high energy efficiency.
- Sleek and sophisticated looks that blend with interiors.
Cons
- Functionality-related issues were faced by some consumers.
Warranty Details
5 years on this split air conditioner and 12 years on the compressor of this 5-star AC
02
Panasonic 1.5 Ton 5 Star Premium Wi-Fi Smart AC
Panasonic split ACs ensure you a premium performance while the 5-star rating reduces the burden of increased electricity bills. These air conditioners feature 7 in 1 convertible modes that provide you with the flexibility of opting for a temperature range as per your needs and preferences, making it one of the finest AC with low power consumption in India. The Panasonic smart AC also has Wi-Fi-enabled operations that allow you to control your appliance by giving voice commands or installing an app on your smartphone. These also have variable speed compressors that adjust the cooling according to the temperature outside. The copper condenser coils not only ensure superior performance but also keep your AC away from rust and corrosion while adding to its durability. The Panasonic 1.5 ton AC is powered by a PM 0.1 Filter that ensures a clean and hygienic airflow by removing dirt, dust, and allergens from the surroundings.
Specifications
- Cooling Power: 11772 British Thermal Units
- Product Dimensions: 23.4D x 87W x 29.5H Centimeters
- Model: ‎CS/CU-NU12AKY5W
- Annual Energy Consumption: ‎524.08 Kilowatt Hours
- Noise Level: ‎32 dB
- Colour: ‎White
- Voltage: 230 Volts
- Wattage: 880 Watts
What Makes Them An Ideal Option?
- AI technology ensures a better and more effective performance.
- Inverter technology adds to the optimal cooling.
- AC quality is quite durable.
Cons
- Functionality-related issues were faced by some consumers.
Warranty Details
1 year on product, 5 years on PCB and Motor, and 10 years on the compressor.
03
Voltas 1.5 ton 5 Star AC
The Voltas 1.5 ton AC offers a good blend of performance and affordability. Rated 5 stars, this Voltas air conditioner has a variable speed compressor that adjusts the power depending on the heat load outside. With that, these also feature 4 in 1 adjustable modes so that you can opt for a temperature, suiting your needs and requirements the most. This Voltas split AC also has stabilizer-free operations that work perfectly fine between 110 - 285 voltage range fluctuations and eliminate the need to require any external devices for the same. Now prevent the formation of rust and corrosion on the appliance with the copper condenser coils that also provide you with superior cooling, while adding them to the plethora of top affordable energy efficient AC in India. The Anti-Dust Filter with Antimicrobial Protection keeps you safe all day long by removing the dirt, germs, and allergens and ensuring a clean airflow.
Specifications
- Cooling Power: 4850 Kilowatts
- Product Dimensions: 23D x 96W x 31H Centimeters
- Colour: White
- Model Number: 185V Vectra CAR
- Voltage: 230 Volts
- Noise Level: 38 dB
- Filter Type: Anti-dust
- Air Flow Efficiency: 930 Cubic Feet Per Minute Per Watt
- Control Method: Remote
What Makes Them An Ideal Option?
- Sleek looks and a durable build.
- Ensures optimal cooling efficiency.
- Inverter technology adds to optimal performance throughout the season.
Cons
- Water leakage and noise level-related issues were faced by some consumers.
Warranty Details
1 Year Comprehensive Warranty on the Product, 10 Years Warranty on Inverter Compressor, 5 Year Warranty on PCB
04
Carrier 1 Ton 5 Star Wi-Fi Smart Flexicool Inverter Air Conditioner
If you have smaller rooms, then this 1 ton split AC can be an ideal option for you to check out. The Carrier 5-star AC comes with Wi-Fi-enabled operations, which makes it easy for you to control your air conditioner’s operations via voice commands or an app on your smartphone. The 100% Copper Condenser Coil with Aqua Clear Protection provides your split AC with gentle care and keeps it away from rust and corrosion while increasing its life and making it withstand any Indian climate or weather condition. This Carrier split AC, yet again, features 6 in 1 convertible modes so that you can easily switch to an ideal temperature as per the requirements. Having an HD and PM 2.5 filter, these can filter out the fine particles and other micropollutants from the indoor air, making the air fresh and germ-free, which makes them one of the best AC for small room with energy saving.
Specifications
- Cooling Power: 3500 Kilowatts
- Product Dimensions: 27D x 80W x 54H Centimeters
- Colour: White
- Model Number: CAI12EE5R35W0
- Voltage: 230 Volts
- Noise Level: 40 dB
- Filter Type: Pre-Filter
- Air Flow Efficiency: 380 Cubic Feet Per Minute Per Watt
- Control Method: Voice
What Makes Them An Ideal Option?
- AC performance offers good cooling.
- Ease of use.
- Tough build quality adds to durability.
- Low-noise operations ensure peace of mind.
- Packed with features like Air Purification Filter, Auto Clean, etc.
Cons
- NA
Warranty Details
1 year on product, 5 years on PCB, 10 years on compressor
05

Inverter AC Energy Saving Tips For Indian Homes

There are several ways in which you can save energy consumed by the air conditioner that will lead to reduced electricity bills in both the short and long term. This can include:

Select the most appropriate capacity of the air conditioner as per your room size.
Keep your air conditioner well-maintained and keep its filters clean.
If your AC is equipped with sleep mode or eco mode, you can use them to save more energy.
Seal gaps and cracks around windows and doors.
Keep the range of the temperature between 24°C and 26°C.
When buying or upgrading your air conditioning unit, opt for a model with a 5-star rating. The higher the star, more will be the efficiency.

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Faq's

What makes an AC energy efficient?
+
Energy efficiency in ACs comes from the use of inverter technology, higher star ratings like BEE 5-star, and eco-friendly refrigerants, which cool effectively while using less power.
Is a 5-star AC better than a 3-star AC?
+
Yes, in terms of energy savings. While a 5-star AC may have a higher initial cost, but, over time it will consume less electricity than a 3-star AC.
What is the capacity of AC required for Indian homes?
+
For small rooms up to 120 sq ft, a 1-ton AC will suffice. For medium rooms up to 180 sq ft, a 1.5-ton AC works well. For larger spaces, you would likely need 2 tons or more.
Which AC is the most energy-efficient?
+
The Indian market offers a plethora of options, and among them, the finest AC models include: Carrier 1.5 Ton 5 Star Wi-Fi Smart Flexicool Inverter Split AC. Samsung 1.5 Ton 5 Star AI Inverter Smart Split AC. Voltas 1.5 ton 5 Star, Inverter Split AC.

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