How does inverter technology enhance the energy efficiency of split ACs?

Inverter technology adjusts the compressor speed to match the cooling demand, reducing power consumption and maintaining consistent temperatures. This variable-speed operation leads to significant energy savings over time.

What role does the refrigerant type play in the energy efficiency of split ACs?

Modern refrigerants like R-32 have superior thermodynamic properties, contributing to enhanced energy efficiency and reduced power consumption.

How does the compressor type influence the energy efficiency of split Air conditioners?

The compressor type significantly impacts energy efficiency. Inverter compressors adjust their speed based on cooling needs, leading to lower power consumption. In contrast, fixed-speed compressors operate at a constant speed, consuming more energy.

What is the typical price range for energy-efficient split AC models?

Energy-efficient split ACs, especially those with inverter technology and high energy ratings, generally have a higher upfront cost. For instance, a 1.5-ton 5-star inverter split AC can range from Rs 35,000 to Rs 60,000, depending on the brand and features.

How do energy ratings affect the energy efficiency of split ACs?

Energy ratings, such as 5-star labels, indicate the power consumption of an AC. Higher-rated models consume less electricity for the same cooling output, leading to lower electricity bills over time.

5 Energy Efficient Air Conditioners: Discussing The Features That Cut Down Power Usage

This guide is simply a look at split air conditioner models that seem to perform well in saving energy. We will also talk about features like inverter technology and energy ratings that contribute to their efficiency.

By : Annpurna Banswal
Last Updated on Apr 04, 2025 13:58 IST
Published on Feb 11, 2025 18:00 IST

Energy efficient split ACs rely on two main factors: inverter technology and energy ratings. Inverter technology helps adjust the compressor speed for better power usage, while energy ratings, such as 5-star labels, reflect how much power an AC consumes over time. But, what happens if an AC has one but not the other? Would an AC with no inverter technology but a high energy rating still be energy-efficient? Or could inverter technology without a high energy rating still offer significant savings? These are the questions we will explore in this article, along with products from top brands like LG, Panasonic, and Lloyd.

Inverter Technology vs. Energy Rating: Which Defines an Energy Efficient AC?

When we talk about energy-efficient air conditioners, we usually hear about inverter technology and energy ratings. So, which one is more important? Let's break it down.

Factor	Inverter Technology	Energy Rating
How it Works	Adjusts compressor speed based on cooling demand, ensuring efficient operation.	Rated on electricity consumption to cool a room, based on set standards.
Efficiency Level	Uses less power by adjusting speed, running only when needed.	Higher star ratings indicate better energy efficiency (less power consumption).
Impact On Power Use	Minimizes power wastage and maintains a consistent temperature.	Directly shows the amount of electricity consumed over time for a set cooling load.
Impact On Cooling	Maintains a steady temperature with minimal energy use.	Does not directly control temperature, but reflects power efficiency.

Which is More Important?

Both inverter technology and energy ratings contribute to energy efficiency, but in different ways:

Inverter Technology: Focuses on how the AC operates by adjusting compressor speeds. This ensures minimal power use and consistent cooling.
Energy Rating: Reflects how much power an AC consumes over time. A higher star rating means the AC is more efficient in the long run.

Do They Work Together?

Yes, both are important together for the best energy efficiency. Here's why:

Inverter technology optimizes the way energy is used during operation.
Energy ratings show how much energy an AC uses for cooling.

To achieve the best energy savings and performance, look for an AC that combines both features. Without inverter technology, even a high-star-rated AC may not be as efficient as expected.

Read More: Top Air Conditioner Brands In India.

Product Spotlight: Top Air Conditioners To Consider

Here, we discuss some of the best split ACs that are often regarded as energy-efficient based on features like inverter technology and high energy ratings. This is not a recommendation or claim, but just our perspective on models that seem to fit the bill for energy savings.

Top Five Products

Panasonic 1.5 Ton split AC
This Wi-Fi-enabled AC offers 7-in-1 Convertible Modes with True AI Mode, allowing automatic adjustments based on room temperature. The Twin Cool Inverter compressor optimizes power usage and ensures efficient cooling. With a 5-star energy rating, it consumes 774.19 kWh annually, making it energy-efficient. It features 4-way horizontal and vertical swing, ensuring uniform airflow across the room. The PM 0.1 filter removes fine dust particles, providing cleaner air. A copper condenser with Anti-Corrosion Shield Blu Technology enhances durability and requires less maintenance. The Miraie mobile app enables remote control, while Alexa and Google Assistant offer voice commands. With Powerful and Dry Mode, it caters to different cooling needs, including humidity control. The low noise operation and R32 refrigerant make it a great choice for comfortable cooling.
Specifications
- Brand: Panasonic
- Capacity: 1.5 Tons
- Cooling Power: 17400 British Thermal Units
- Product Dimensions: 23.5D x 107W x 29H Centimeters
- Special Features: Smart AC- Wi-fi enabled, MirAie App enabled, work with Alexa and Ok Google, PM 0.1 Filter for air purification, 4 Way Swing & Hidden Display, 7 in1 Convertible with True AI Mode
- Warranty: 1-year on the product, 5 years on PCB, and 10 years on the compressor.
Pros:
- AI mode effectively adjusts cooling
- PM 0.1 filter reduces fine dust
- Low power consumption at 774.19 kWh
- Miraie app control is seamless
Cons:
- Some users reported slow installation
What Customers Say About It
- Users appreciate its cooling efficiency and energy savings, considering it a good value for money. Many find the performance satisfactory, while some report installation issues and occasional functionality concerns. There are mixed opinions on the noise levels, with some users finding it quieter than expected and others mentioning slight disturbances.
What Makes It Energy Efficient?
- The True AI Mode adjusts cooling based on room temperature, optimizing power usage, while the Twin Cool Inverter ensures minimal energy consumption by adapting to varying cooling needs.
01
LG 2.0 Ton 3 Star DUAL Inverter Split AC
This 2 ton AC is designed for large rooms (211-230 sq. ft.), offering a Dual Inverter Compressor for efficient cooling with minimal energy consumption. The AI 6-in-1 Convertible feature adjusts cooling capacity from 40% to 110%, ensuring flexibility based on room size and occupancy. VIRAAT Mode enhances cooling speed, while the 15m air throw and 4-way air swing provide even airflow. It operates at 52°C ambient temperature and includes a stabilizer-free operation (120V-290V) for voltage fluctuations. The HD filter with Anti-Virus Protection improves air quality, and the Ocean Black Protection with a 100% copper condenser enhances durability by preventing rust and corrosion. Gold Fin+ technology further increases lifespan. Additional features include low gas detection, auto clean, monsoon comfort mode, sleep mode, and smart diagnosis system. Annual energy consumption is 1220.4 units, and it has an ISEER value of 4.00.
Specifications
- Brand: LG
- Capacity: 2 Tons
- Cooling Power : 2.04 Kilowatts
- Product Dimensions: 21D x 99.8W x 34.5H Centimeters
- Special Feature: Inverter Compressor, Remote Controlled, Silent Mode, 4 Way Swing, Fast Cooling
- Warranty: 1 Year on product, 5 Years on PCB and 10 Years on Compressor with Gas Charging
Pros:
- Airflow reaches up to 15 meters
- Operates smoothly in high heat (52°C)
- ADC sensor enhances durability
- Magic Display is easy to read
Cons:
- Nothing in particular
What Customers Say About It
- Users praise its quiet operation and consistent cooling, considering it a high-quality choice for large rooms. Many appreciate the stable air circulation, though some mention installation challenges and inconsistent cooling performance in certain conditions.
What Makes It Energy Efficient?
- The 6-in-1 Convertible feature allows flexible cooling modes, adjusting capacity based on room size and occupancy, while the Dual Inverter Compressor minimizes energy use by regulating power output.
02
Lloyd 1.5 Ton 5 Star Inverter Split AC
It is an economical cooling solution for medium-sized rooms (up to 150 sq. ft.). It features a non-inverter compressor, ensuring efficient cooling with low noise operation. The 3-star energy rating results in an annual energy consumption of 1180.51 units, with an ISEER value of 3.15. The Blue Fin Coils enhance cooling performance while requiring minimal maintenance. The 100% inner grooved copper tubes improve heat exchange and durability. This AC maintains cooling even at 48°C ambient temperature and includes features like clean air filter, LED display, self-diagnosis, auto restart, and strong dehumidification. The R32 refrigerant makes it an environmentally friendly option with no ozone depletion potential. The compact design measures 71.0 x 66.0 x 43.0 cm and weighs 49.5 kg.
Specifications
- Brand: Lloyd
- Capacity: 1.5 Tons
- Cooling Power: 4.8 Kilowatts
- Product Dimensions: 22D x 98.2W x 32H Centimeters
- Special Feature: Smart 4 Way Swing; Turbo Cool; 100% Copper; Anti Corrosion Coating, 5 in 1 Convertible; Cools Even @ 52 ˚C, Low Gas Detection; Clean Filter Indication, Installation Check; Stabilizer Free Operation; Hidden LED Display, Golden Fin Evaporator; PM 2.5 Filter
- Warranty: 1-year product and 5-year compressor
Pros:
- Auto restart restores previous settings
- Strong dehumidifier improves comfort
- Compact design
- Inner grooved copper ensures fast cooling
Cons:
- Noise levels vary between units
What Customers Say About It
- Users appreciate its cooling efficiency and affordability, considering it a good value for money. Many find it quiet and effective for large rooms, though some mention installation challenges and mixed opinions on noise levels.
What Makes It Energy Efficient?
- The Blue Fins Coils and R32 refrigerant optimize cooling efficiency, while automatic restart and low voltage operation help reduce energy consumption, enhancing overall performance without excessive power usage.
03
Samsung 1.5 Ton Inverter Smart Split AC
This AI-powered AC is designed for medium-sized rooms (150-180 sq. ft.), offering Wi-Fi connectivity and voice control via Alexa, Google Assistant, and Bixby. The BESPOKE AI technology enhances energy efficiency, providing 30% additional energy savings with AI Energy Mode. With a 5-star BEE rating and an ISEER value of 5.15, it consumes just 751.24 units per year. The 5-step convertible mode allows cooling adjustments, while the 4-way swing ensures uniform airflow. The copper condenser with Durafin Ultra coating enhances durability and requires low maintenance. Other features include Auto Error Diagnosis, 3-Step Auto Clean, and Digital Inverter Technology. It cools efficiently even at 58°C and supports Internet of Things (IoT) for connected living. The R32 refrigerant makes it an eco-friendly choice.
Specifications
- Brand: Samsung
- Capacity: 1.5 Tons
- Cooling Power: 5 Kilowatts
- Product Dimensions: 21.5D x 105.5W x 29.9H Centimeters
- Special Feature: Inverter Compressor, Remote Controlled, WiFi Enabled, 4 Way Swing, Fast Cooling
- Warranty: 5 years comprehensive, 10 years on the Digital Inverter Compressor
Pros:
- AI Energy Mode reduces bills noticeably
- SmartThings app setup is user-friendly
- Triple Protection Plus ensures longevity
- Digital inverter runs with minimal fluctuations
Cons:
- Some users reported occasional Wi-Fi issues
What Customers Say About It
- Users appreciate its energy efficiency, modern design, and smart features, calling it value for money. The finishing and build quality receive positive feedback, though some report concerns about noise levels, cooling performance, and certain functionality issues.
What Makes It Energy Efficient?
- The BESPOKE AI and 30% additional energy savings adjust cooling based on real-time needs, while the Digital Inverter Compressor optimizes power efficiency, maintaining ideal temperature with lower energy consumption.
04
LG 1.5 Ton 3 Star DUAL Inverter Split AC
This 1.5 ton AC is ideal for small rooms (111-150 sq. ft.), offering efficient cooling with a Dual Inverter Compressor. The AI Convertible 6-in-1 mode allows you to adjust cooling levels based on room occupancy, enhancing energy efficiency. With a 3-star energy rating, it consumes 852.44 units annually, featuring an ISEER value of 4.0. The 100% copper condenser with Ocean Black Protection prevents rust and ensures uninterrupted cooling even at 55°C ambient temperature. The VIRAAT Mode, 2-way air swing, and HD Filter with Anti-Virus Protection improve comfort and air quality. Additional features include Gold Fin+ coating, auto clean function, smart diagnosis, monsoon comfort mode, and a 6-speed fan. The stabilizer-free operation (120V-290V) ensures smooth performance. The R32 refrigerant keeps it eco-friendly.
Specifications
- Brand: LG
- Capacity: 1.5 Tons
- Cooling Power: 4.4 Kilowatts
- Product Dimensions: 18.9D x 83.7W x 30.8H Centimeters
- Special Features: Inverter Compressor, Remote Controlled, Auto Clean, sleep_mode, Fast Cooling
- Warranty: 1-year comprehensive, 10 years on the compressor.
Pros:
- Quiet operation at just 26 dB
- VIRAAT Mode cools the room quickly
- Ocean Black Protection prevents corrosion
- Self-diagnosis helps detect issues early
Cons:
- Nothing in particular
What Customers Say About It
- Users appreciate its low noise operation and energy efficiency, considering it a solid performer. However, some have mixed opinions on the remote control functionality, cooling performance, and installation experience.
What Makes It Energy Efficient?
- The Dual Inverter Compressor adjusts power based on cooling demand, while the AI Convertible 6-in-1 mode provides flexible cooling options, optimizing energy use for better efficiency.
05

Also Read: Best AC Under 35000.

Which Refrigerant Is It Widely Used and How It Helps Split ACs Become Energy Efficient?

R-32 is the most commonly used refrigerant in split ACs today. It replaced R-22, which was banned due to its ozone-depleting properties and high environmental impact.

Why is R-32 Popular?

Energy Efficient: It has better cooling efficiency, leading to lower power consumption.
Eco-Friendly: Zero ozone depletion potential and lower global warming impact than older refrigerants.
Less Refrigerant Required: ACs using R-32 need a smaller quantity of gas for the same cooling output.

Are There Any Downsides?

Mildly Flammable: Though safe for regular use, proper handling during installation is necessary.
Higher Pressure Levels: Requires durable components, making AC units slightly more expensive.

Despite minor drawbacks, R-32 remains the preferred refrigerant due to its balance of efficiency and environmental safety.

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Faq's

How does inverter technology enhance the energy efficiency of split ACs?
+
Inverter technology adjusts the compressor speed to match the cooling demand, reducing power consumption and maintaining consistent temperatures. This variable-speed operation leads to significant energy savings over time.
What role does the refrigerant type play in the energy efficiency of split ACs?
+
Modern refrigerants like R-32 have superior thermodynamic properties, contributing to enhanced energy efficiency and reduced power consumption.
How does the compressor type influence the energy efficiency of split Air conditioners?
+
The compressor type significantly impacts energy efficiency. Inverter compressors adjust their speed based on cooling needs, leading to lower power consumption. In contrast, fixed-speed compressors operate at a constant speed, consuming more energy.
What is the typical price range for energy-efficient split AC models?
+
Energy-efficient split ACs, especially those with inverter technology and high energy ratings, generally have a higher upfront cost. For instance, a 1.5-ton 5-star inverter split AC can range from Rs 35,000 to Rs 60,000, depending on the brand and features.
How do energy ratings affect the energy efficiency of split ACs?
+
Energy ratings, such as 5-star labels, indicate the power consumption of an AC. Higher-rated models consume less electricity for the same cooling output, leading to lower electricity bills over time.