Highest ISEER Rating AC in India 2023 [1 & 1.5 Ton]

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In India, air conditioning is an essential appliance that helps people combat the scorching heat during summers. 

With advancements in technology, air conditioners have become more energy-efficient and cost-effective.  One of the essential factors to consider while purchasing an air conditioner is its ISEER rating. 

ISEER, or Indian Seasonal Energy Efficiency Ratio, is a rating system that measures the cooling efficiency of an AC. The higher the ISEER rating, the more energy-efficient the air conditioner. 

In this article, we will explore the highest ISEER rating ACs available in India, helping you make an informed decision while purchasing an air conditioner.

Air ConditionerISEER
Daikin 1 Ton AC6.20View Product
Daikin FTKF50U5.80View Product
LG 1.5 Ton AC5.20View Product
Daikin FTKM50U5.20View Product
Carrier 1.5 Ton AC5.13View Product
LG Window AC3.68View Product
Panasonic 1.5 Ton AC5.1View Product
Godrej 1 Ton AC5.1View Product
Lloyd 1 Ton AC3.93View Product
Godrej 1.5 Ton AC5.1View Product

What is a good ISEER rating for AC?

ISEER value is the rating using which one can differentiate between two air conditioner’s energy efficiency. An AC with a higher rating will save more electricity than a different AC with lower rating.

But what ISEER value is a good one to consider.

A fixed value cannot be given!

Every year as technology is advancing the air conditioner’s too are improving and so is their ISEER rating. That is why one cannot say that ‘xyz’ value is a good ISEER rating because after 1-2 years the same value may not remain the best value.

For example the highest ISEER rating in the year 2019 is not the highest ISEER rating in the year 2023.

Why go for a high ISEER Rating?

High ISEER Rating means lower power consumption which results in lower electricity bills.

Using ISEER value one can calculate the power consumption and electricity bills depending on the daily usage. 

You can also use this calculator for doing the same.

But you should keep in mind that if you go for an AC with the highest ISEER rating then it will cost higher. Your initial cost of buying will increase but the combined cost which includes electricity bills will be lesser.

Also note that here we have mostly listed only split ACs because their ISEER rating is way higher than that of a window AC.

Highest ISEER Rating AC

1. Daikin 1 Ton 5 star AC

Key Specifications

  • Capacity: 1 Ton
  • ISEER Rating: 6.20
  • Power Consumption: 418 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Self-diagnosis, Coanda Airflow, PM 2.5 Filter

This is the only AC in the indian market with 6.2 iseer rating not only that no AC has rating near to 6. 

Your search for 1 ton ac with highest ISEER rating should finish with this Daikin FTKF series appliance.

Let’s talk more about its electricity saving

I have compared this Daikin AC with an average split AC in the market(Lloyd AC in our case).

Assumption for calculating electricity bill

Daily Use = 10 hours
Cost / unit = 10 rupees

Daikin AC = 1220 rupees

Average AC = 2030 rupees

Wow! Its nearly half.

That means this Daikin AC will reduce the power consumption by half compared to an average AC in the market. That’s a lot but we should also consider the fact that the AC is way too expensive.

For the above example I have used this calculator.

The AC comes with the patented new swing compressor which allows it to work smoothly with low vibration. That is why its outdoor unit runs quietly.

In the hot and harsh climate of India the temperatur can soar as high as 50 degree celsius in some regions. The company claims that this unit can work fine even with an outdoor temperature of 56 degree celsius. The compressor will not trip.

Being an inverter AC it can work without stabilizer but make sure to use a stabilizer if you live in any far off village. Don’t take the risk because stabilizer is cheap but this product is expensive.


  • Powerful Cooling
  • Super Silent indoor and outdoor unit 
  • Saves lot of Electricity


  • Too expensive from other 1 Ton split ACs

Amazon Link

2. Daikin 1.5 Ton Split AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.80
  • Power Consumption: 667 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Self-diagnosis, Coanda Airflow, PM 2.5 Filter

Next in our list is once again the Daikin FTKF model series AC. If your room size is bigger let’s say 180 square feet then 1 ton will not suffice then you need this daikin 1.5 ton AC.

In the 1.5 tonnage segment this AC comes with the highest ISEER rating.

Let’s compare this AC with an average 1.5 Ton AC in the market.

I have compared this with voltas 1.5 ton ac

Assumption for calculating electricity bill

Daily Use = 10 hours
Cost / unit = 10 rupees

Daikin 1.5 Ton AC = 2830 rupees

Average AC = 2030 rupees

That’s a 33% difference

So if you buy this highly efficient 1.5 ton AC compared to an average 1.5 ton AC in the market then you will save 33% electricity on a daily basis.

This unit is fully packed with features. You will find the basic features like chill mode, self-diagnosis, self-clean along with some special features like swing compressor, coanda airflow, etc.

Along with the basic 1 year warranty on the unit you get the full 10 year warranty on the compressor which is the heart of the air conditioning system.


  • Powerful and fast cooling
  • Super Silent indoor and outdoor unit 
  • Helps in saving electricity if used for long hours


  • Too expensive from other 1.5 Ton split ACs

Amazon Link

3. LG 1.5 Ton AI split AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.20
  • Power Consumption: 749 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Self-diagnosis, 6-in-1 convertible mode, Auto clean

After checking Daikin ACs now have a look at this LG AC. This split AC comes with a whopping ISEER rating of 5.20

You should know this fact that LG’s air conditioner is the 2nd highest selling AC in the india market. Reason is the advanced technology and features given in it.

Many features like convertible mode and dual inverter compressor were first introduced by LG then other brands started copying them.

I personally prefer LG split AC for buying and would recommend it only. Daikin is 2nd on my list. LG’s unit lasts longer because the durability provided is top notch.

The coiling is coated with ocean black protection which protects the unit against corrosion. Highly useful in cities like Mumbai, Goa, or places near a nala.

As usual this AC does not require an external stabilizer for voltage fluctuations because the compressor used here is inverter technology.

Now you can control your LG AC without the remote just install the app and you will be able to control the AC using just your smartphone. 1.5 Ton is actually ideal for a 150 to 180 square feet room because it can easily cool the same quickly.


  • Convertible mode for changing cooling power
  • Super Silent indoor and outdoor unit 
  • AI dual inverter compressor


  • Cooling starts with delay

Amazon Link

Flipkart Link

4. Daikin 1.5 Ton Split AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.20
  • Power Consumption: 785 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Self-diagnosis, Dehumidifier, Auto clean

If you are looking for a high ISEER rating AC but also want it to be budget friendly not expensive then check this Daikin split AC. You can check its price from our link. It was an affordable price for 1.5 ton when this article was written.

It has all the exclusive features which are seen in a Daikin AC. The company claims that it can run on optimal till the exceeding temperature of 54 degree celsius after that it may start to trip.

It comes with 5.2 ISEER rating which is a good value when compared to other models in the market.

The obvious air filters are provided to protect the indoor unit from dirt that also purifies your room air, along with that a small PM 25 filter is given for removing minute contaminants particles.

We are happy to know that this AC comes with R32 gas which is environment friendly and does not harm our earth’s ozone layer. 

Use the power chill mode when required faster cooling, often when we come from outside we need quick cooling to lower the body heat.


  • 10 year warranty on the compressor
  • Saves electricity and power
  • Swing compressor for quiet operation


  • No convertible mode

Amazon Link

5. Carrier 1.5 Ton Flexicool Split AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.13
  • Power Consumption: 754 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Low Gas Detection, Convertible mode, auto cleaner

This is also a budget-friendly air conditioner along with a high ISEER rating of 5.13.

Carrier is considered to be a reliable brand and comes in the list of top brands. This Flexicool unit offers a 6-in-1 cooling option which means the consumer can choose 6 different cooling options to suit their needs.

The coiling is coated with hydro blue coating for protecting against corrosion, if by any how there is leakage in the system the unit can automatically detect low gas problems.

The indoor unit produces low noise of 38 dB during its operation, this is actually quiet and your newborn baby can have good night sleep without any troubles.

The obvious air filters which help purify your room air from any allergens or contaminants. If you open the flaps of indoor unit you will see a tiny patch of PM 2.5 filter. 

You should know that the appliance box does not have any drain pipe so you need to buy one yourself. Also the installation charge will be extra which too you will have to pay.


  • 6-in-1 convertible mode for various cooling requirements
  • Budget Friendly along with power saving feature
  • Latest 2023 model


  • No drain pipe in the box

Amazon Link

6. LG 5 star Window AC

Key Specifications

  • Capacity: 1 Ton
  • ISEER Rating: 3.68
  • Power Consumption: 672 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Dehumidifier, dual inverter, 4-in-1 convertible mode

If you are looking for the highest ISEER rating window AC then this is the only option in the entire indian market. 

Few years back all the air conditioners had fixed speed compressors. Then daikin introduced compressors with variable speed technology which was also called inverter AC. This allowed it to increase the cooling efficiency thus saving power.

Now every split AC in the market comes with an inverter compressor but window AC still uses a fixed speed compressor.

If you want to enjoy the benefits of an inverter compressor in a window AC then you can buy this inverter window AC from LG.

Window AC seldom requires servicing and their installation too is easy. Infact many people service their window AC on their own. That’s the benefits of window AC whereas cost of servicing for split AC is high.

This is the best ISEER rating window ac from LG. You can control the appliance using your phone only, just install the LG ThinQ app on your smartphone.

LG used dual inverter compressor technology which is a patent of the company and is exclusive only.


  • 4-in-1 convertible mode for various cooling requirements
  • Highest ISEER rating window AC
  • Ocean Black Protection


  • Sometimes cooling is too slow

Amazon Link

7. Panasonic 1.5 Ton Smart AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.1
  • Power Consumption: 774 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Convertible AI mode, EcoNavi Sensors

After looking at various split air conditioners, now have a look at this smart AC from panasonic. The ‘smart’ is nothing but the usage of an app using which you can control the appliance from a smartphone.

This AC can help you save electricity as it comes with a good 5.1 ISEER rating. After seeing all these ACs you must be wondering why most of the units are 1.5 ton.

The reason is to increase the ISEER rating or cooling efficiency the company has to increase the cabinet size. And 1.5 ton AC is usually larger than a 1 Ton AC. So in 1 1.5 ton AC the cooling efficiency can be increased.

Marketing on the convertible mode introduced by LG this Panasonic split AC offers 7-in-1 convertible mode, this means you can change the cooling mode into 7 different modes based on the requirements.

The Econavi feature in this model can detect the human body inside the toom so that it directs the flow of cool air toward that person. 

Its app name is MirAie using which one can control the AC from the phone.


  • 7-in-1 convertible mode for various cooling requirements
  • Stabilizer free operation
  • Control appliance from App

Amazon Link

8. Godrej 1 Ton Inverter AC

Key Specifications

  • Capacity: 1 Ton
  • ISEER Rating: 5.1
  • Power Consumption: 524 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Convertible mode, Nano coated anti-viral filter

This Godrej split AC is also a good one to consider because it has a high ISEER value of 5.1. This unit too is a 1 ton AC.

The company has to do it to increase the efficiency and iseer rating because as explained earlier the cabinet size needs to be increased to make the necessary changes so as to increase the efficiency.

It offers 5-in-1 convertible mode, I see almost every company marketing on the convertible mode feature. Thanks to LG for introducing it.

To protect the AC from dust and humidity the condenser unit is provided with anti-corrosion blue fin coating which can increase the lifespan of the appliance.

It has the obvious air filter to purify the room air but along with that it has a special nano coating filter that is anti viral in nature and will remove harmful allergens from the air gradually with time.

For heavy duty cooling needs the appliance is designed such that it can withstand harsh Indian summers, it will easily run upto max 52 degree celsius of outdoor temperature.

In the market you will find two categories generally one is R410A and other is R32 gas. Both are ozone friendly but R410A is dangerous to handle. Most of the cases where aircon blasts happen are the ones with R410A gas. Here R32 gas is provided.


  • 5-in-1 convertible mode 
  • Removes allergens from the room air

Amazon Link

9. Lloyd 1 Ton Split AC

Key Specifications

  • Capacity: 1 Ton
  • ISEER Rating: 3.93
  • Power Consumption: 698 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Convertible mode, Stabilizer Free operation

Have a look at this Lloyd 1 ton split this offers a good iseer rating. Also this is very budget friendly considering the high iseer rating it provides.

With this 1 ton AC you can easily cool a 140 square feet room quickly. Forget not to use a ceiling fan along with it. This also has convertible mode and offers 5 different modes in it.

It is the latest 2023 model so it will be fully packed with latest features. The company claims stabilizer free operation so you need not require a stabilizer with it. This is possible due to the inverter technology present in it which allows the appliance to run on varying voltage without any trouble.

The indoor unit contains 2 air filters along with a tiny PM 2.5 filter for filtering allergens and contaminants from the air.

If you face any defect or issue in the appliance then you can avail free service as it comes with comprehensive 1 year warranty on the unit along with a 10 year warranty on the compressor.

The sales page claims that the annual power consumption of this unit is 698. Though this is based on general values. Every consumer is different. The actual annual power consumption depends on the daily use, the outdoor conditions, etc.

Amazon Link

10. Godrej 1.5 Ton Inverter AC

Key Specifications

  • Capacity: 1.5 Ton
  • ISEER Rating: 5.1
  • Power Consumption: 744 units  
  • Warranty: 1 year on AC, 10 year on compressor
  • Special Features: Self-clean technology, 5-in-1 convertible mode

Now consider this high iseer rating ac from Godrej. It comes with 5.1 iseer value. This is also a budget friendly option to choose when looking for better power saving capabilities.

You can check this product on Flipkart, There you may find various offers like Debit card or credit card offer using which you can get upto 10% discount. This is a lot considering the price of the AC.

Get uniform cooling even when the outdoor temperature rises as high as 52 degree celsius. With the help of inverter technology the AC is free from use of voltage stabilizer however you must use one when living in a village.

To withstand the polluted environment of Indian cities the company has provided the appliance with anti-corrosive blue fin coating to prevent it from harsh acidic conditions.

Do note that when buying this product online you will have to pay extra for installation along with the few things like drain pipe and copper pipe. The installation will be done via the authorised company’s service engineer.

Few of the consumers exclaimed that this product is very reliable and they are satisfied with the service of godrej.

Flipkart Link

How to increase power Saving

In general people want higher ISEER ratings which can help them to save electricity.

Well saving electricity is not limited to this only.

There are many points and tips applying which one can reduce power consumption by many times.

I have quoted few of the important points here!

  • Run the AC on 24 degree celsius

The Indian government has done a study to get the optimum temperature to run your AC in India so that it saves the most power along with keeping the room cool. 

So instead of running the AC on 18 degrees, keep it on 24 degrees next time.

  • Use of Ceiling Fan

If you run the air conditioner along with the ceiling fan it can help reduce some power. The ceiling fan helps in better circulation of air in the room and also it cools your body by evaporation. 

Note that the feeling of heat you perceive is caused by the combined effect of temperature, humidity and wind speed. 

Your AC surely can lower down the temperature and humidity but cannot increase the wind inside. Use ceiling fan to do so.

  • Use Green Shed Net

If your room gets sunlight from any side of the wall then your AC consumes more electricity because the sun is heating your room.

That is why using some kind of net can reduce the sunlight entering your room. Green shed net is a cheap and popular option for doing the same.

It is generally used to protect plants from sunlight.

  • Use Sleep Mode during the Night

Sleep Mode is specially made for use at night time. The logic behind using this mode is during the night the temperature dips slowly as the night passes by. 

So you too can lower the AC temperature, lowering the power consumption.

This can be easily done automatically by the sleep mode. 

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