Air conditioners provide instant cooling for quick comfort during hot climatic conditions. However high energy consumption of air conditioners may affect electricity bills and increase expenses.
There are many energy efficient air conditioners in the market with features that help reduce the consumption rate.
We have mentioned a list of the best energy-efficient air conditioners for optimum cooling to provide maximum comfort and maintain low consumption levels.
Along with reviewing the best air conditioners, we have also mentioned a few other important things that will help you make the decision like: Difference Between 5 Star and 3 Star AC, Working Mechanism of Energy Efficient AC and buying guide for energy efficient AC.
Top Energy Efficient Air Conditioners (AC)
|Best AC Brands||Star Rating||Buy|
|1. Sanyo||5 Star||Buy on Amazon|
|2. Daikin||5 Star||Buy on Amazon|
|3. Panasonic||5 Star||Buy on Amazon|
|4. LG||5 Star||Buy on Amazon|
|5. Voltas||5 Star||Buy on Amazon|
|6. Carrier||5 Star||Buy on Amazon|
|7. Godrej||5 Star||Buy on Amazon|
|8. Blue Star||5 Star||Buy on Amazon|
|9. Hitachi||5 Star||Buy on Amazon|
|10. Voltas||5 Star||Buy on Amazon|
Energy Efficient AC Reviews
1. Sanyo 1.5 Ton 5 Star Dual Inverter Wide Split AC
The air conditioner comes with auto restart feature that automatically resumes original settings when restarted after power cuts.
This Sanyo Dual Inverter Wide Split AC comes with 5 star rating and 1.5 ton capacity.
It features a dual inverter variable speed compressor that adjusts power according to the heat load. It provides energy efficiency and works on low noise.
This air conditioner comes with in-built PM 2.5 filter and anti-dust filter for purification of air.
The auto restart feature provides automatic resuming of the original settings when restarted after a power cut.
It comes with self diagnosis feature for easy troubleshooting and an eco function feature helps in lowering power bills.
It is equipped with a timer function, hidden display, glacier mode for extra cooling and a sleep function that auto-adjusts temperature for a comfortable sleep.
It comes with energy saving Japanese technology and is designed according to the climatic conditions of India.
It is equipped with 100% copper coils for fast heat transfer and resistance to corrosion. The AC has hydrophilic fins for longer condenser life, backlit remote for ease of operations, and uses R32 refrigerant gas that poses no ozone depletion potential.
2. Daikin 1.5 Ton 5 Star Inverter Split AC
It is equipped with neo swing inverter compressor ensures smooth rotation by reducing friction and vibration.
This Daikin Split AC comes with variable speed compressor for energy efficiency and low noise operations.
It has 5 star rating and 1.5 ton capacity. It is equipped with copper condenser coil for better cooling and low maintenance.
The AC provides radiant cooling through Coanda Airflow for enhanced comfort. It comes with a stabilizer inside and features a self diagnosis function.
It operates on an R32 refrigerant that has zero ozone depletion potential and an Econo mode for limiting power consumption while providing efficient operation.
Neo swing inverter compressor provides smooth rotation, reduced friction and less vibration while preventing leakage of refrigerant gas.
It provides smell proof operation by removing unnecessary moisture and preventing the growth of molds and bacteria.
This air conditioner comes with a strong insulation kit that is UV treated for longer life. Power chill operation ensures instant cooling and the indoor unit quiet operation feature ensures low noise level operations for uninterrupted comfort.
3. Panasonic 2 Ton 5 Star Wi-Fi Twin Cool Inverter Split AC
It supports a voice control function to offer seamless and hands-free operations.
This Panasonic Inverter split AC adjusts power according to the heat load.
It has a capacity of 2 ton and is suitable for large-sized rooms.
It has been given 5 star energy rating and is an energy efficient air conditioner that has low noise operation. It has a premium design and features dry mode and powerful mode.
This air conditioner comes with 100% pure copper coils for faster heat transfer and resistance to corrosion.
The twin cool inverter has twin rotors that ensure smooth, stable and fast rotation, less wear and tear and longer life of the compressor. Shield Blu protects the evaporator against corrosion and R32 refrigerant ensures environment-friendly operations.
This air conditioner can be linked to an application on the smartphone for ease of access. It offers in-built diagnostics for maximizing performance and operational lifespan.
It allows customizing sleep profile, temperature control and voice control. This air conditioner comes with 2 stage filtration process to improve air quality.
4. LG 1.5 Ton 5 Star Inverter Split AC
It comes with Ocean Black Fin for protection against humidity, dust, sand, smoke and chemicals.
This Inverter Split AC from LG has 1.5 ton capacity and is suitable for medium sized rooms.
It comes with a variable speed compressor for energy efficiency and low noise operation. It has 5 star rating and comes with 4-way air swing function for uniform cooling throughout the room.
This air conditioner has 4-in-1 convertible cooling for different conditioning requirements and works with Stabilizer Free Plus for safety during voltage fluctuations.
It comes with Ocean Black protection for durability and is equipped with Himalaya Cool Technology for optimum cooling.
Monsoon comfort technology ensures comfortable cooling and greater energy savings in humid conditions.
The AC is equipped with a dehumidifier, EZ clean filter, antibacterial filter, HD dust filter, low gas detection, smart diagnosis system, magic display and auto-clean feature.
5. Voltas 1.2 Ton 5 Star Inverter Split AC
The air conditioner is equipped with a copper condenser coil which is more durable and delivers an optimum cooling experience.
Voltas Inverter Split AC ensures an efficient cooling system and low power consumption.
It has a capacity of 1.2 ton and is suitable for small sized rooms. It has an active dehumidifier and advanced air purification system to remove harmful odours from the room.
It runs on environment-friendly R32 refrigerant and provides stabilizer free operation.
This AC has a durable and sturdy design and provides high ambient cooling even at 52 degree Celsius. It has 4 way auto louver that delivers air uniformly in all directions and features a multi stage filtration advantage.
The steady cool compressor helps in optimizing power consumption while maintaining ideal room temperature. It has other features like LED display, self diagnosis, anti fungal feature, auro restart and timer function.
6. Carrier 1.5 Ton 5 Star Inverter Split AC
Hybridjet Inverter Technology adjusts cooling and performance and manages energy saving needs
This Inverter Split AC from Carrier has a capacity of 1.5 ton and 5 star energy rating.
It adjusts the power depending on the heat load and ensures higher energy savings. It can also provide powerful cooling that cools even at 55 degree Celsius.
Flexicool technology allows selection from different modes with varied power consumptions depending on cooling requirements.
This machine provides stabilizer free operation and comes with PM 2.5 filter to filter micro particle pollutions for fresh and healthy air.
It has a backlit remote for ease of operating during night time. Follow me feature allows auto-adjustment of AC temperature according to the requirements of the room temperature.
The air conditioner has sleep mode, auto cleanser, hidden display and is equipped with 100% copper coil for better cooling and low maintenance.
7. Godrej 1.5 Ton 5 Star Inverter Split AC
The Green Inverter technology optimizes cooling temperature according to the room temperature for greater comfort and energy efficiency.
The Godrej Inverter Split AC has a capacity of 1.5 ton and is suitable for medium sized rooms. It has 5 star rating and provides energy efficient, low noise operation.
It provides superfast powerful cooling and maintains low consumption even at high ambient temperatures.
This air conditioner comes with green inverter technology that adjusts the temperature according to room temperature for high energy efficiency.
It provides tri-filter air purification and has a smart diagnosis feature that depicts fault through error code on the display panel.
Blufin copper evaporator is paired with Golden fin condenser for anti corrosion effect to ensure durability and uninterrupted powerful cooling.
8. Blue Star 1.5 Ton 5 Star Inverter Split AC
The Precision cooling technology intelligently varies the operating frequency to prevent indoor room temperature fluctuations.
Blue Star Inverter Split AC delivers the fastest cooling with maximum energy savings.
It has a capacity of 1.5 ton and is suitable for rooms that have an area of 120 to 170 sq. ft. iFeel technology ensures desired comfort with an in-built sensor in the remote and powerful mode provides instant cooling.
This Blue Star air conditioner features a climate control program and has a hidden light-up display. It is equipped with a dehumidifier and multi filtration design and operates on an R32 environment-friendly refrigerant.
Precision cooling technology ensures precise control over temperature to prevent room temperature fluctuations.
The AC comes with a brushless DC motor with extended durability and reduced operative noise even at high rotational speeds. It allows a dual user setting for personalization of the desired cooling experience.
9. Hitachi 1.25 Ton 5 Star Inverter Split AC
The filter clean indicator provides alerts to clean filters at regular intervals for powerful cooling all the time.
This Hitachi Inverter Split AC has a capacity of 1.25 ton that is suitable for medium sized rooms and 5 star rating that provides best in class efficiency.
It comes with a filter clean indicator and is an expandable inverter air conditioner that cuts down humidity levels.
It comes with Penta Sensor intelligent technology for perfect cooling even in extreme summer conditions. It has a tropical design that works efficiently even up to 52 degree Celsius.
The AC has inner grooved copper tube that ensures faster cooling by enhancing heat transfer rate.
It provides stabilizer free operation, SuperFine mesh filter, stepless compressor control, SuperSlit fins, and works on an eco friendly refrigerant.
10. Voltas 1.5 Ton 5 Star Window AC
The two stage filtration feature removes allergens, odour, dust and other harmful particles to provide cool and fresh air.
This Voltas Window AC has a copper condenser and comes with 1.5 ton capacity and 5 star rating.
It easily fits in a window and comes with an anti-dust filter, auto start, timer and sleep and turbo modes.
It has a rotary compressor that features self-diagnosis function and comes with different modes for setting according to the desired comfort level.
The AC provides all-weather ambient cooling, has an active dehumidifier and multi filtration advantage.
It provides instant cooling at even 50 degree Celsius. Copper condenser coil ensures durability and delivers efficient cooling.
It features an eco mode for optimized power consumption, turbo cooling for instant cooling and sleep mode for comfortable sleep at night.
Difference Between 5 Star and 3 Star AC
Star rating of an air conditioner considers two parameters are those are:
Energy Efficient Ratings (EER)
This is amount of cooling the appliance can provide using a particular amount of power.
British Thermal Units (BTU)
The cooling capacity of the room is measured by British Thermal Units.
Before you purchase an energy efficient air conditioner, it is wise to know the difference between the star ratings to make the right decision.
The star rating of the electrical machine is quantified as Energy Efficiency Ratio (EER). A 5 star air conditioner has an EER of 3.3 or above and on the other hand, a 3 star air conditioner has an EER between 2.9 and 3.09.
When we consider the difference between a 5 star and 3 star AC monetarily, the energy bill of a 3 star AC will be Rs. 580 while keeping the variables constant, the bill of a 5 star air conditioner would be Rs. 500.
The TCO (total cost of ownership) of the 5 star air conditioner is lower than the 3 star AC in the long run.
Working Mechanism of Energy Efficient AC
24 your house does not get too hot during the summer, your AC should have to fundamental parts and those are cooling and air handling.
Without cooling the machine would only rotate the room temperature here throughout the home. Without air handling, there wouldn’t be any air supply from which the heat can be removed by the cooling system.
The cooling process
Air conditioners work on both chemistry and technology to cool your room. It uses a chemical called refrigerant that converts gas to liquid and then back again. The air conditioner takes up the heat from inside your room and transfers it outside.
After the heat from the air is removed the air handling unit cycles the cool air in the room. it draws air through the air filters to remove allergens and dirt, through the evaporator coil for cooling and then throws the air across the blower fan.
Measuring the energy efficiency
As the air conditioners run on electricity, gauging efficiency Is not as simple as measuring how much electricity will be required to operate the appliance.
The initial efficiency measures foot a system across number of test that determine the amount of electricity consumed by an air conditioner to cool the room. This rating is known as Energy Efficiency Ratio (EER).
Over a period of time researchers realised that they required a unique outlook to measure the efficiency of air conditioners. This is because average temperatures very widely.
The amount of electricity required to cool a room in Southeast is different from the amount required to cool a space in Northeast.
The seasonal Energy Efficiency ratio begins with an average cooling load according to different outdoor temperatures in summer.
SEER rating is derived from the seasonal consumption of energy required to cool a room. Always remember that EER and SEER ratings are not interchangeable.
How to Buy an Energy Efficient AC in India?
It is important to consider the factors that are important in helping you make the right decision.
Air conditioner types
Window and split air conditioners are the most commonly types. But there are a few others available too. Let us look at the types to know how different they are and its functions.
These are basic split air conditioners and they have two units. They are ideal for spaces of up to 60 sq meters. The price range of this type of AC is between Rs. 20,000 and Rs. 60,000, based on the features.
This is a subtype of the split air conditioners. They have several indoor units that work as one outdoor machine.
Remember that the additional units come with extra costs and thus this is what makes the multi split units costlier.
This type if air conditioning system is great for large homes and buildings. It has a series of tubes that connect the central unit to multiple outlets as well as sensors that are installed in different rooms.
When it comes to efficiency, this type of air conditioning system is better than the regular split and window AC systems. Thus, it is costlier and the starting price is Rs. 50,000.
Window air conditioner
The window air conditioning systems are great for spaces of up to 50 square metres. the come in a single unit and are mounted on windows.
Usually these air conditioners fall into the price range between Rs. 20,000 and Rs. 40,000 and are a great substitute in cases where a split system cannot be installed.
The capacity of the air conditioner is defined as per the room size and the amount of energy it consumes.
Depending on the room size you should be able to estimate the amount of power you should be looking in in an air conditioning system in Watts.
An air conditioner with a power rating between 2 and 2.5kW areideal for spaces of around 20 square metres and less.
For spaces of 20-0 sq. meters, you require an appliance that has a power of 2.5kW to 6kW. For rooms of 60-80 sq. meters, go for a machine having a power range of 5 to 7 kW and 6-9 kW for rooms more than 80 sq. meters.
Another important parameter that is used in most air conditioner specifications is the tonnage. The greater value of tonnage, the greater is the capacity. But always remember that more tonnage does not always imply the best option.
Many points influence the size off the AC unit like room size, insulation, and location. A space of 400 square feet will require one ton in air conditioner and if the space is large, around 2000 square feet, then you may need a 5 ton AC.
Most split and window air conditioning systems have noiseless operations that do not disturb anyone at home or office.
Even then it is important to check the noise level on the specification to make sure that the appliance will not be a barrier to the comfort of your home or office.
the noise level will be termed in decibels and any appliance that works at 50 decibels or less is ideal for homes and offices.
The advanced air conditioning systems come with extra features that provide more comfort. let’s check out these features so that you can decide which ones are important for you:
A fan is an important component of the AC system as they enable the AC to suck in air and release in the right manner.
A few AC models allow you to adjust the fan speed as per your requirements.
Different operating modes
many air conditioning systems have multiple operating modes that make them more convenient, versatile and economical.
Below mentioned are some of the common operating modes:
Cool – Ensures that the air conditioning system cools the space faster
Eco – This mode adjusts the AC’s working as per the room’s temperature. It uses the sensors to sense the temperature and make changes in the working automatically.
Heat – Ensures that the system throws in warm air. This mode is ideal for cold places.
Dry – This mode removes excess moisture from the air.
The sensors sense any individual in the room. you may be confused how this sensor may help. it actually e automatically switches off the air conditioning system when no one is in detected in the room.
This sensor can help you make the most of your unit and save energy.
Many existing air conditioners come with Wifi that allows you to control the system with your smartphone, tablet or laptop.
This is one of the best features where the air conditioning system self clean the unit by removing trapped particles. This ensures longevity.
Many advanced air conditioners have inbuilt anti bacteria filter that removes invisible elements like bacteria, pollen, dust mites, and many other allergens.
This filter prevents dust my deposits on the inside of the AC and helps it last long it longer.
We hope this guide helps you get all the important information that will help you in making the right decision.
If you are confused whether you should go for a 5 star or 3 star energy rating we have listed down a few differences that will help you pick the right one.
We have also mentioned a comprehensive buying guide that lists important factors you need to consider while buying an energy efficiency AC.
To make your search simpler we have researched and reviewed some of the best energy efficient air conditioners available in the market right now.