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7 Best AC In India (2021) – Expert Review & Buyer’s Guide!

If you are looking for the best AC in India 2021 then you’re in the right place. Our honest review and buyer’s guide will help you find the best air conditioner in India.

Summer in India starts from March and lasts until June. But the majority time of a year the temperatures remain hot.

The temperatures average between 30 – 45 Degrees during summer season and it continues till late October.

Purchasing the best ac in India would be the perfect solution to spend a comfortable time at least in your home.

There are some best ac brands available in the Indian market with various models which can confuse you a lot. While thinking about best ac in India the following questions may strike in your mind:

  • Which is the best ac in India?
  • What is the best 1.5 ton split ac?
  • Which is the best 1.5 ton window ac?
  • What is the best inverter ac?
  • Which is the best ac company / best ac brand in India?
  • Which ac brand provides best after sales service?
  • What is the best ac for home?

In this article, I will give you the honest reviews about best air conditioner in India 2021. This will definitely make your buying decision easy.

So, without further ado here’s a list of the best AC in India 2021.

We highly recommend that you read the Air Conditioner Buying Guide at the end of this article to get in-depth knowledge about all the latest air conditioner technologies and make an informed decision.
Table of Contents show

Best AC In India 2021 (At A Glance)

This list is made on the basis of the data we collected from our research on various models, users review, feedback, technical specification and obviously value for money.

Now, read the following reviews to get in-depth knowledge about these air conditioners.

Best Air Conditioner In India 2021 – Inverter Split AC (1.5 Ton)

01. LG 1.5 Ton 5 Star Inverter Split AC – Best AC In India (Editor’s Choice)

Key Highlights:

  • Energy Rating: 5 Star.
  • Condenser Coil: Copper.
  • Refrigerant Gas:Eco Friendly R32 .
  • Special Features: Inverter, Antibacterial Coating, Dust Filter, Air Purifier, Dehumidifier, Mosquito away technology.
  • Warranty: 1 Year (Comprehensive), 10 Years (Compressor with Gas Charging).

LG KS-Q18YNZA air conditioner is at number one in our list of the best air conditioners in India. This inverter split AC comes with a variable inverter compressor.

This compressor helps you to adjust the power of the air conditioner, which depends on the heat load. As it comes with a variable compressor it is very much energy efficient and also generates very low noise.

This LG inverter AC comes with the hi grooved copper condenser coils. Hi-grooved copper coils help to enable the oscillatory movement for better heat dissipation.

Hi-grooved copper also makes the pipe structure strong so that it can endure high pressure.

The Plasmaster lonizer Feature feature of this split AC helps to sterilize the air and removes the utmost amount of bacteria. So, with this air conditioner, you will enjoy fresh and chilled air.

This split AC comes with an active energy control feature that saves a lot of energy. This feature helps you to limit power consumption by up to 40% to 80%.

In this inverter air conditioner, you will see ocean fin technology that plays the role of a guard against the scorching weather and helps to enhance the lifespan of the air conditioner.

LG KS-Q18YNZA inverter split air conditioner works with the Himalaya Cool technology, which ensures the best cooling effect. So, even in extremely weather condition, you will get the most soothing feeling.

With just clicking you will feel chilled weather like Himalayan region.

This air conditioner also comes with a unique Mosquito Away Technology. It is one of the best technologies used in this air conditioner. This technology is known as TUV Nord that keeps the mosquitoes away.

  • Dual inverter compressors save a lot of energy.
  • The energy control feature of this AC saves a lot of energy.
  • This split AC produces very less sound.
  • It is a bit expensive.
  • Installation service of this air conditioner is poor.
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02. Daikin 1.5 Ton 5 Star Inverter Split AC – Best AC In India (Best Rated)

Key Highlights:

  • Energy Rating: 5 Star. Best in class efficiency. Annual Energy Consumption: 767 units. ISEER Value: 5.33
  • Condenser Coil: Copper.
  • Refrigerant gas: Environment friendly R32.
  • Special Features: Pm 2.5 Filter, Stabilizer Inside.
  • Manufacturer Warranty: 1 year on product, 1 year on condenser, 5 years on compressor.

Daikin FTKD50TV inverter split ac is considered as one of the best air conditioners in India. This air conditioner works with the Neo Swing Compressor technology.

This technology ensures smooth rotation with minimum fraction and vibration. Hence, the AC generates very less sound.

The Daikin 1.5 ton split AC comes with Econo Mode. This mode is also known as the power saving mode. This mode also helps you to save a lot of energy.

Moreover, in this AC, you will get an Indoor unit quiet operation, Power chill operation, and Coanda airflow option.

With this split AC you will see 5 Star rating and the ISEER value of 5.33. The annual energy consumption of this air conditioner is 767 units approximately.

For 5 star rating, you will notice power saving with this air conditioner.

This split AC comes with the power chill feature that helps you to make the room cool quickly. For this quick cooling feature, this inverter AC is considered as one of the best ACs.

With this inverter AC you will get the quiet operation of the indoor unit. This feature helps to optimize the speed of the airflow according to the noise level. This feature ensures uninterrupted comfort to the user.

  • This AC can handle extreme voltage fluctuations.
  • With this AC, you will get warranty for a long period.
  • This AC does not generate much noise.
  • You can operate it only with the remote as there are no wireless features available.
  • You have to pay extra for the installation.
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03. Voltas 1.5 Ton 5 Star Inverter Split AC – Best AC Brand In India

Key Highlights:

  • Energy Rating: 5 Star.
  • Condenser Coil: Copper
  • Refrigerant gas: Eco-friendly R32
  • Special Features: Antibacterial Filter, Dust Filter, Air Purifier
  • Manufacturer Warranty: 1 year on product, 1 year on condenser, 5 years on compressor

The Voltas SAC_185V_JZJ 5 star inverter split AC comes 3rd in our list of the best AC in India. This air conditioner comes with the DC inverter technology that ensures high-quality performance.

This technology maintains an ideal temperature and thereby it saves you a lot of energy.

In this inverter split AC, you will see the high-ambient cooling feature. This feature offers extremely cool air even in the scorching hot conditions.

The air conditioner works on the stabilize-free operation. This feature helps the AC to endure significant voltage fluctuations.

Hence, you need not to spend extra on stabilizers.

Like other best air conditioners, this ac also comes with a copper condenser coil. Therefore, it is easy to maintain and ensures better cooling in your room.

Low-frequency torque control is one of the best specifications of this air conditioner. This feature helps to save energy and also helps to remove dust.

With this inverter split AC, you will get some special features such as dust filter, antibacterial filter, and air purifier that will offer you a better user experience.

  • It provides excellent cooling.
  • This split AC helps to remove odor and harmful particles.
  • It generates fresh air.
  • The look of this air conditioner is not very attractive.
  • This AC generates noise.
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04. Carrier 1.5 Ton 5 Star Inverter Split AC – Best Air Conditioner In India (Best Selling)

Key Highlights:

  • Energy Rating: 5 Star.
  • Condenser Coil: Copper coil.
  • Refrigerant gas: Environment friendly R32
  • Special Features: Dust Filter, Air Purifier, Dehumidifier
  • Warranty: 1 year on product, 1 year on condenser, 10 years on compressor

The Carrier CAI18EK5R39F0 1.5 Ton Inverter Split AC comes 4th in our list of the best ac in India 2021. This air conditioner works with the Flexi-Cool Hybrid Jet technology, which ensures better cooling.

This air conditioner comes in a powerful and durable design that makes the air cool with more efficiency. Moreover, for this design, you will experience the best performance and fast indoor cooling facility.

This split AC comes with four different operating modes. These modes help to adjust the power consumption of the AC and lower your electric bills.

The Carrier 1.5 Ton Inverter Split AC comes with a copper condenser coil. Hence, it offers better cooling and it is also easy to maintain.

This air conditioner helps to save a lot of energy by its stabilizer free operation. The AC works at very low voltages for this feature.

With this inverter AC, you will notice several special features such as Dehumidifier, dust filter, and air purifier. Also with this air conditioner, you will get a PM 2.5 filter that enhances the filtering quality of the AC.

  • This air conditioner is environmentally friendly.
  • This AC works perfectly in low voltage conditions.
  • It ensures durability.
  • This split AC does not come with adequate copper pipe.
  • You may face issues with installation.
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05. Hitachi 1.5 Ton 5 Star Inverter Split AC

Key Highlights:

  • Energy Rating: 5 Star.
  • Condenser Coil: Copper Coil for better cooling and requires low maintenance.
  • Refrigerant gas: Eco-friendly R410A.
  • Special Features: Wide-Angle deflector, Built-in stabilizer.
  • Warranty: 1 + 1 year Additional Warranty, 5 years Controller Warranty and 10 years Compressor Warranty.

In this Hitachi KASHIKOI 5100x RSB518HBEA inverter split AC, you will see a unique design that comes with an extended wide-angle deflector. This unique design ensures maximum cooling effect.

The wide-angle deflector wave blade design also removes odor from the evaporator of the AC.

Although this ac comes with a powerful compressor, but it saves a lot of energy. This split AC consumes energy up to 1449 watts.

In this 1.5 ton inverter split air conditioner, you will see the copper condenser coil that provides better cooling.

Also, as copper doesn’t accumulate rust, it is easy to maintain.

With this 1.5 ton split AC, you will see several technologies such as Powerful Mode technology, 43 Quality Tests Technology, Refrigerant Technology, and Tropical Inverter Technology.

You will get built-in stabilizer function in this air conditioner that can endure high voltage fluctuations.

  • The unique design of this air conditioner ensures perfect air delivery.
  • This air conditioner is environmentally friendly.
  • This split AC is very much energy efficient.
  • You need to pay an extra charge for the installation.
  • There you will not get any copper pipe in this AC.
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06. Blue Star 1.5 Ton 5 Star Inverter Split AC – Best Silent AC in India

Key Highlights:

  • Energy Rating: 5 Star.
  • Condenser Coil: Copper.
  • Refrigerant gas: Eco-friendly R32
  • Special Features: Brushless DC motors (BLDC), Anti-bacterial filter

In this Blue Star 5CNHW18QATX/IC518QATX inverter split AC, you can see the precision cooling technology. This cooling technology ensures comfort for the user.

With this inverter AC, you can set the temperature even at 0.1 degree Celsius that will offer comfort in extremely hot conditions.

This cooling technology works on the advanced microprocessor with which you can perfectly control room temperature.

This split AC works on a dual rotor inverter compressor that offers high performance. The compressor offers energy efficiency.

Moreover, this compressor generates less noise with minimum vibration. The dual rotor compressor also ensures faster cooling and long durability.

This split AC comes with automatic 4D Swing that is particularly designed to offer uniform cooling.

In this inverter air conditioner, you will see a copper condenser coil that is anti-corrosive and offers better cooling.

With this split AC, you will notice the cold plasma technology that generates a natural bio climate. This technology ensures purified air.

This inverter AC comes with brushless DC motors. These motors generate very low noise even when the machine is running at high speed. 

  • This air conditioner is eco- friendly.
  • It offers an excellent look.
  • This split AC doesn’t generate much noise.
  • This split AC requires extra service charge for installation.
  • The AC can’t save enough energy in comparison with other split air conditioners.
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07. Whirlpool 1.5 Ton 5 Star Inverter Split AC – Best 1.5 Ton Split AC Under 35000

Key Highlights:

  • Energy Rating: 5 Star
  • Condenser Coil: Copper Coil for better cooling and requires low maintenance
  • Refrigerant Gas:R-32 eco refrigerant
  • Special Feature:Intellisense inverter technology, 6th sense fast cool technology
  • Warranty: 1 year on product, 1 year on condenser, 10 years on compressor

The Whirlpool MAGICOOL PRO 5S is the final one in our list of the best ac in India.

This inverter split AC works with 6th sense cooling technology which ensures faster cooling.

In this split AC, you will see IntelliSense inverter technology.

This split AC works on Magicool technology. This technology helps to make the room cool quickly even in the scorching hot conditions.

The MPFI or Multi Port Fluid Injection Technology is used in this air conditioner. This air conditioner ensures rapid heat exchange. 

With this split AC, you will get a sleep function with which you can experience peaceful sleep.

  • This air conditioner offers excellent cooling performance.
  • This split AC comes with the best build quality.
  • It does not generate much noise.
  • You may face issues with the remote.
  • In comparison with other split ACs, it doesn’t save so much energy.
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Best AC In India 2021 – Buying Guide

Indian summer is really a hectic time to survive. At least like some hotter cities like Jaipur, Delhi, Agra, Nagpur, etc. It becomes probably impossible to survive for the extremely scorching heat.

Moreover, for the increasing global warming effects, the temperature appears like hell pit in summer. But, for the blessings of technology, we have Air Conditioners to save us from such tough situations in summer.

Therefore, it is important to choose the best AC in India, that will suit your home.

Presently, you can see there are a lot of air conditioner brands available in the market. So, naturally, people have become more confused while purchasing the best AC.

Still, you have to consider several features of an Air Conditioner before investing your hard-earned money into it.

Here, in this article, we will provide you a complete AC buying guide that will be helpful for you while purchasing the best AC in India.

Before going further to the buying guide the basic thing you have to know is what an AC and how it works.

What is an Air Conditioner (AC)?

An air conditioner is a machine or system that treats air in a particular, usually surrounded area through a refrigeration cycle. In this way, the warm air is replaced and removed with the cooler air.

As per the construction, the entire system of heating, ventilation and air conditioning is known as HVAC (Heating, Ventilation and Air Conditioning).

So, before choosing the best AC in India, consider the type of Air Conditioner that you want to buy as per your convenience.

Types of Air Conditioners (AC)

There are 3 types of Air Conditioners that you can see in the market. To purchase the best air conditioner, you have to choose what type of AC unit you want to install in your house.

Now, we will focus on the three types of AC units.

Split AC

As the name shows, this type of AC comes with two units. You need to install one unit mounted outside of the room on the wall and the other unit will be mounted inside the room.

LG 1.5 Ton 5 Star Inverter Split AC

In the outside unit, you can see a compressor and a condenser. The inside unit consists of a blower.

The compressor gets connected to the blower with a connecting pipe. The compressor draws air from outside and makes itself cool.

Then the air is passed to the blower and the blower throws the cold air into the room. In comparison with other AC units, split AC is more aesthetically pleasing.

These AC units are suitable for large bedrooms and large areas like commercial places.

Window AC

Voltas 1.5 Ton 3 Star Window AC

Window AC comes with only one unit that has a combination of compressor and blower within it. This AC needs to be installed only in the window frames.

The blower present in the unit faces the inside walls of the room. And the other side faces the outside open air.

Portable AC

In India, portable AC is very new. These ACs look like air coolers. You can move this AC from one room to another room.

Blue Star 1 Ton Portable AC

For portability, these AC units are known as Portable AC. This AC is suitable for those homes, particularly where you can’t mount a window AC or a split AC.

Moreover, people who live on rent can easily use this portable AC and can frequently relocate it from one place to another place.

Working Process of an Air Conditioner (AC)

Air conditioners work similarly like a fridge or refrigerator, but with a larger extent. This machine removes the heat from the inside of a room. Thus the room gets cooler gradually.

Working Process of Air Conditioner
Refrigeration Cycle: 1) Condenser Coil 2) Expansion Valve 3) Evaporator Coil 4) Compressor

Here come the biggest myths that the air conditioners generate cooling. But it’s wrong as air conditioners don’t produce cooling.

Rather this machine eliminates the heat and makes the room cool gradually.

Through this entire procedure, it will help you get cozy and feel chilled in the scorching summer.

Before purchasing the best AC in India, it is essential to know the scientific functioning procedure of an air conditioner.

Mainly, air conditioners function on the three rules. These three rules include evaporation, condensation, and compression.

Now we will look into the procedures briefly to get a clear idea about the functioning of the air conditioner.

  • Every AC unit comes with refrigerant gas. The compression of the refrigerant gas is the very basic step in the working of the air conditioner. When the gas becomes compressed, it turns into a high pressure hot liquid.

  • Then the hot liquid flows through the condenser coils where the heat exemptions while cooling the liquid. Here also the liquid remains still under high pressure.

  • Then the expansion valve comes into action and transforms the high-pressure liquid into low-pressure liquid.

  • Now the low-pressure liquid flows through the evaporator coils. This is how the machine absorbs the heat from the room.

    Here once again, this heat transforms the liquid into gas. As the procedure of gas absorption gets to continue, you will feel cooling in the room ambiance.

  • At the last step, the refrigerant gas comes back into its original form. This procedure continuously keeps on repeating.

Now, before purchasing the best ac in India, you should consider the followings:

01. Size of Air Conditioner (AC) – Tonnage

Before buying the exact tonnage AC first you need to know what is tonnage.

When we talk about an air conditioner size or tonnage we are actually talking about the amount of heat it removes per hour and not the weight of an air conditioner.

What is the tonnage of an AC?

Ton is considered as the cooling capacity of an AC. Tonnage is the amount of heat that the AC removes from the room within one hour.

The mathematical unit of tonnage is measured by BTU. BTU stands for the British Thermal Units. It is the amount of heat required to raise 1 pound of water by 1 degree Fahrenheit.

The measurement is done as 3,412 BTU = 1Kw/hr.

For example, you can see 1 ton is equal to 12000 BTU/hour and a 2-ton AC unit would be rated at 24,000 BTU/hr.

The higher tonnage AC will provide more cooling effect.

In the market, when you browse through the AC units, you will see air conditioners of various tonnages. Several available AC tonnages are 0.75-ton, 1-ton, 1.5-ton, 2-ton, and many more.

How to choose the right tonnage of the AC?

Now, the question is that what is the right size of air conditioner for your room. Frankly speaking there is no specific answer to this question.

Because the decision depends on several factors like room size, number of people in room, number of appliances in room, etc.

  • Size of the room: You have to keep in mind the volume and area of the room where you will install the AC. The primary job of an air conditioner is to remove the heat from the room by making it cool.

    So, higher the tonnage, more the amount of heat the AC removes from the room within one hour.

    For example, an AC unit of 1.5-ton will work differently in a room of 120 square feet than in a room of 150 square feet. It happens due to the higher volume of the hot air.

  • City where you live: You have to consider the city where you are living. The climate of that particular city is very important as you may need air conditioners of higher capacities when the outer temperature increases.

    You can see that in some extremely hot states like Jaipur, Agra, Delhi, the temperature reaches 45 degree celsius in summer. Or you can see that in some coastal cities like Banglore, Chennai, or Mumbai the temperature hovers around 38 degree celsius to 40 degree celsius.

    So, to tackle such a climate, you may need to choose the high tonnage air conditioners.

  • Location: Consider the exact location of the room where you will install the AC. It is essential as the rooms can appear hotter if the ceiling of your room gets direct sunlight during the daytime.

    Hence you need higher capacity of AC to get proper cooling.

    It works the same to the side walls as well.

  • Number of people in the room: If a family contains many people, the heat emission will be higher from the bodies. Therefore, you may need an AC unit of higher tonnage to cool the rooms where many people live.

    For instance, you can see that an AC unit of 1.5 ton will work better in a room of 150 square feet.

    On the other hand, this same sized room will need an AC unit of 2-ton if 10 or 15 people are staying such as in a shop or in a restaurant room.

The following table will help you choose the right size of air conditioner according to the room size.

Size of the Room Recommended AC Size
0 to 80 square feet 0.75 Ton
80 to 120 square feet 1 Ton
120 to 180 square feet 1.5 Ton
180 to 300 square feet 2 Ton

02. Electricity Consumption of the AC

We all usually get concerned about electricity consumption when we purchase any electric device. While you will buy the best AC in India, a common question comes to mind is how much electricity it will consume.

The electricity consumption also depends on several factors like star rating, tonnage, usage of the air conditioner, and many other aspects.

How to Conserve Electricity with the AC?

There are several ways by using that you can conserve electricity when you use an Air Conditioner.

  • Keep the windows closed.
  • Use sleep mode in your AC at night.
  • Keep the AC vents clean.
  • Service your AC timely.
  • Use an anti-bacterial filter.
  • Use the Wi-Fi connectivity feature to switch on your AC.
  • During monsoon use the AC with dehumidifier feature.
  • Use the AC with an auto-clean function feature.

Modes of Operation of the Air Conditioner (AC)

You can use the air conditioner in various modes such as cool mode, fan mode, dry mode, and many more. Here, we will discuss the modes of the operation of the AC as the electricity consumption depends on it as well.

Cool Mode: Cool mode is the default mode that you will see in every air conditioner. This mode depends on the temperature and the setting of the fan speed.

To activate this mode, you have to set the temperature of your air conditioner between 24 to 26 degrees centigrade. This range is considered as the most comfortable temperature range to assure maximum efficiency.

Turbo or Quick Cool Mode: Quick-cool mode is not an electricity-saving mode at all. You can see this feature in many AC units. With this mode, the AC starts functioning at a temperature setting of 16 to 18 degrees centigrade.

Dry Mode: Dry mode is the perfect mode that you should use in a humid weather condition. Like if you live in a place near a sea, you can use this mode.

The dry mode of the AC removes the humidity from the air and makes the room cool automatically. During this mode, the fan of the air conditioner runs at lower speeds, and the compressor runs for a shorter period in more extensive cycles.

The main objective of the dry mode is to make the room cool by removing the humidity.

Fan Mode: In the fan mode, the compressor of the AC remains off. So that it can save energy by this procedure, but it does not make the room cool. Even a ceiling fan will do a better job than the fan mode of the AC.

Sleep Mode: It is a specialized mode that helps the air conditioner to increase the temperature of the thermostat by 1 degree every hour. It keeps growing until the temperature enhances by 2 degrees.

At night the outer side becomes already cooler; hence this mode ensures less electricity consumption.

Power Saving Mode: In this particular mode, the compressor of the AC shuts down while the temperature of the air reaches the level set in the thermostat. During this mode, the fan keeps running to maintain the coolness.

When the temperature reaches extreme at a certain level, the compressor starts to function again. Here you have to keep in mind that the compressor is the largest consumer of electricity.

As the compressor flutters between the on and off position, during this mode, the AC consumes less electricity. 

6th Sense Cooling Mode: You will find the 6th sense cooling mode only in the Whirlpool AC units. In these AC units, the technology adjusts the speed of the fan that depends on the temperature inside the room.

This mode is better than the cool mode.

After considering the modes of the AC, also you have to consider some other aspects that will influence the electricity consumption in the AC. You have to consider these aspects while purchasing the best AC in India.

  • Location: Location is a vital part while you are concerned about electricity consumption. In some cities of India like Nagpur or Delhi, it becomes very warm during summer. The climate also remains dry.

    On the other hand, in places like Chennai or Mumbai, you will experience high humidity. So, naturally, the AC will work differently in both these circumstances.

  • Number of appliances in the room: Electrical appliances emit a lot of heat.Also, don’t make your room congested with a lot of furniture. It also impacts the electrical consumption of the AC.

    In the AC room, it is recommended that you keep the shelves and cupboards closed. As walls also absorb heat by insulating the walls will help to reduce electrical consumption.

  • Colors in the room: Surprisingly, colors impact a lot on the performance of an air conditioner. We all know darker colors absorb more heat, and these colors will take more time to be cool.

    Hence, you should choose a light color for the walls and curtains of the room.

  • Usage: You should consider the daily usage of the AC unit. Also, consider the duration of the utilization of your air conditioner throughout the months of the entire year.

03. Energy Efficiency (EER, SEER, ISEER, CoP, BEE Star Ratings) of the AC

EER, ISEER, CoP, and Star ratings are such important factors that affect the efficiency of AC units. Therefore you also have to consider these aspects to choose the best AC in India.

BEE Star Ratings

EER (Energy Efficiency Ratio)

EER is a very vital ratio that differentiates between AC units. Scientifically EER is the amount of heat that is removed per hour, and it is divided by the amount of power consumed.

Therefore, we can say EER is equal to BTU/hr/watt. Remember that the higher EER will offer the better performance of the AC unit.

It happens as the AC will be able to remove more heat per hour per unit of power consumed.

So, you may consider the best AC with higher EER.

SEER (Seasonal Energy Efficiency Ratio)

Internal and external temperature is a vital thing that affects the performance of the AC. If the outside temperature is warmer, the AC will consume more electricity to make the room cool.

In monsoon and winter, the temperature is much less than in summer. So, here you can see that the EER of the AC varies according to the seasons.

ISEER (Indian Seasonal Energy Efficiency Ratio)

The concept of both SEER and ISEER is same. But here two more factors you have to consider.

CSEC (Cooling Seasonal Energy Consumption): CSEC means the total energy that is consumed by the AC when it remains in the active mode.

CSTL (Cooling Seasonal Total Load): CSTL means the total amount of removed heat by the AC unit while it is active.

Now, ISEER is equal to total amount of heat removed to the total amount of energy consumed, i.e. ISEER = CSEC/CSTL

CoP (Coefficient of Performance)

Coefficient of Performance or COP is a ratio of useful heating or cooling provided to work required.

To understand the concept of CoP, you have to do some simple mathematical calculations. For this calculation, you should know the relation between KW hr and BTU.

We can say that 1KW hr is equal to 3412 BTU or 1 KW is similar to 3412 BTU/hour.

Therefore, 1 W is equivalent to 3.412 BTU/hr.

The CoP is the amount of heat that is removed by the air conditioner in Watts, and it is divided by the power consumption in Watts.

Therefore, CoP does not have any units. A higher CoP will offer higher efficiency of the AC unit.

Also, remember that EER is equal to 3.412 X CoP.

Star Ratings

Whenever you are looking for the best AC in India, you have to look for the star ratings as well. The stars are prescribed by the BEE (Bureau of Energy Efficiency), Department of Energy Savings Government of India.

Into this formulation procedure, a lot of factors go into it. Here, we will provide charts of star ratings for Window AC and Split AC for 1/12/2016 to 31/12/2017.

Star Ratings of Window AC vs Split AC

Below is the defined range of ISEER for Inverter Air Conditioners:

Inverter AC Star Ratings

In these tables, you can see the star ratings with the EER. While you purchase an AC unit, you will see this table as it is a mandatory part of AC manufacturers to include the EER on the star rating sticker.

Also, remember that the 5-star AC is always more expensive than a 4-star AC. Moreover, you will save a lot of energy consumption for an extended period.

While purchasing the best AC in India, there are some other aspects too, like CSTL, and CSEC, that impact on the performance of an AC which we have discussed earlier.

Some Other Important Points to Consider

Apart from the above mentioned jargon, there are some other points that you have to understand.

Rated Cooling Capacity

Rated Cooling Capacity is a ton of an AC unit. It equals 12000 BTU per hour.

Maximum cooling capacity

It is also measured in tons. For instance, you can see that a 2-ton AC can remove 24000 BTU of heat per hour from a room. Though the previously discussed aspects also impact the process.

It is recommended that you should not purchase an over sized AC as it will affect the performance of the air conditioner.

Rated Power Input

You will see the rated power input on the star rating label. It is a vital part of AC manufacturers to include this figure.

It is equal to the power consumption in Watts when the AC functions at 100% load. A 1.5-ton AC consumes near around 1500 W/hr.

If you use the AC continuously for 5 hours, the consumption is not 1.5 to 2 times 5. It happens as the compressor switches off and on repeatedly.

Hence, consumption will be less.

Half Power Input

The half power input also works by the above concept. It is the power consumption in Watts when the AC functions at 50% of the load.

Maximum Power Input

It is also a type of power consumption when the AC functions at its maximum tonnage capacity. This figure will be different from the Rated Power Input for the tolerance of + or – 5% permitted by the BEE.

04. Concept of Inverter AC

Inverter AC is a type of air conditioner that works on inverter technology and saves a lot of power. In a regular AC, you can see the full capacity of the compressor when the AC is functioning.

When the temperature reaches the optimum stage, the compressor switches off, and the fan of the AC continues to operate.

After the temperature rises above the threshold limit, the compressor starts to work again and works with full capacity.

Here, you should keep in mind that the compressor only works on full and zero.

Working Process of Inverter AC

Inverter air conditioners do not work in the same procedure. Here, the compressors function with multiple speeds.

In these air conditioners, the compressor never switches off, and it always remains on.

As the compressors run at various speeds, hence it draws less power. The Inverter ACs mostly functions like the accelerator of a car.

In a car, when we want to increase the speed, we have to press on the accelerator. And when you want to slow down the speed, you have to remove your foot from the accelerator.

Just in this same way, the inverter AC works, and you also will get the power-saving feature only in the split AC models.

Now comes the benefits, the only benefit of using the Inverter AC is that these are highly energy efficient. You may compare a 3-star Inverter AC with the 5-star typical split AC.

Inverter AC vs Non Inverter AC

  • The basic difference between these two types of AC is that the inverter AC can run at various speeds and variable tonnage. On the other hand, non-inverter AC units run at a constant tonnage and speed.
  • Inverter AC can adjust their speed and tonnage according to the heat of the room. On the other hand, non-inverter AC units don’t have this capacity.
  • As per efficiency, inverter AC units are more efficient than the non-inverter ACs.
inverter ac vs non inverter ac

The size of the room and number of people there also have an impact here. Hence, you have to choose the perfect AC unit according to all these aspects.

Now, we will provide a basic chart to differentiate between an Inverter AC vs Non-Inverter AC.

Aspects Inverter AC Non-Inverter AC
Compressor motor Always on On and Off
Electricity consumption Less More
Appliance life High Moderate
Price Highly expensive Expensive
Reach to desired temperature Quickly Takes time

Here, we will provide the BEE data of 2018 about the power consumption of several AC units with various ratings and tonnage. This table shows that the higher star rating AC units with lower consumption.

Here, you also can see that the inverter AC units are extremely energy efficient.

No. of Stars 0.75 Ton 1 Ton 1.5 Ton 2 Ton
1 Star Non Inverter 627 843 1246 1648
2 Star Non Inverter 596 800 1184 1626
3 Star Inverter & Non-Inverter 542 747 1104 1448
4 Star Inverter 464 645 945 1293
5 Star Inverter 450 554 840 1113

05. Type of Compressor

While purchasing the best AC in India, a compressor is one of the most vital aspects that you have to consider. You may consider the compressor as the heart of the AC unit.

Therefore, it is essential to know the functioning process of the compressor. Now we will see the role of the compressor in an AC.

The main job of the compressor of an AC is to compress the refrigerant gas to high pressure. It also converts the refrigerant gas into a high-pressure liquid at high temperatures.

This condenser coil passes through the liquid that takes out the heat from the liquid and then releases it in the surroundings. Then the expansion valve reduces the pressure and converts the liquid into gas.

This gas passes through the evaporator coils. Then the evaporator coils absorb the heat from the room and make the rooms cool.

There are two types of compressors namely Reciprocating Compressors and the Rotary Compressors. Below is the difference between Reciprocating vs Rotary Compressor.

Reciprocating vs Rotary Compressors

Reciprocating compressor: This type of compressor is similar to the engine of the automobile. This compressor works on the concept of the cylinder and piston.

Reciprocating Compressor

The piston works in back and forth motion, and it results in compression and release of the gas.


  • Reciprocating compressors are easy to maintain.
  • These compressors are capable of working at higher pressures.


  • These compressors produce a lot of noise.
  • With these compressors, the air comes out at a high temperature.

Rotary Compressors: This type of compressor consists of several rotors that have very little clearance between them. The rotors of these compressors rotate in opposite directions.

Rotary Compressor

And the air passes through the rotors and emanates at high pressure.


  • The AC units with this type of compressors are suitable for large industries and offices.
  • These compressors make less noise.
  • With Rotary compressor, the air comes out at a lower temperature.


  • This type of compressor is more expensive than Reciprocating compressors.
  • In these compressors, higher usage is needed for maximum working.

You should consider the pros and cons of both of these compressors while buying the best AC in India.

Also, remember that the Reciprocating Compressors are suitable for small offices and homes, whereas Rotary Compressors are suitable for big industries and offices.

06. Condenser Coil Material of the AC

AC units work is based on condensation, compression, and evaporation. The entire procedure involves moving the refrigerant gas inside the coils.

These coils are mainly made of two materials, copper and aluminium.

Here, many people get concerned about which coil is better than the copper one or the aluminum coils. In previous times, the coils were mainly made of copper.

Then in 1970, General Electronics made the drastic change when they substituted copper coils with the aluminum coils. Since that particular year, the debate started between the copper coil vs aluminum coil.

Copper Coil vs Aluminium Coil

Copper Coil vs Aluminium Coil

Here, we will focus on several aspects of choosing the proper type of coils for the best AC in India.

Heat Transfer: We all know that copper has higher efficiency of heat transfer than aluminum. Therefore copper coils are considered as a better heat exchanger than the aluminum coils.

Malleability: Aluminium is considered as more malleable than copper. Therefore, aluminum can be molded into any desired shape than copper.

Consequently, you can go for aluminum coils to make the best air conditioner.

Strength: While considering the strength factor, copper is always stronger than aluminum. Even copper coils also last longer than aluminum coils.

Cost Factor: While purchasing any electronic device, the cost factor is a considerable aspect to consider. Copper is more expensive than Aluminium.

Therefore to buy the best AC, you can go for the AC units with aluminum coils to save your money.

Corrosion: AC units work in a damp environment. There is always a possibility of corrosion.

This corrosion causes the formation of a layer over the coils and also affects the conductivity.

People who live near the sea should be highly cautious about this matter.

Maintenance: You can see that the condenser coils are always placed on the external AC units. They have to face extreme weather conditions.

Copper coils are easier to maintain, whereas you have to keep the aluminum coils into heavy-duty cabinets. Therefore, they are difficult to maintain.

Microchannel Condenser Coils: Microchannel Condenser coils are also aluminum coils. These coils are flat aluminum tubes that come with minute holes through which the refrigerant flows.

The entire set up is made up of aluminum.

So, there is no chance of galvanic corrosion. Therefore, these coils are appropriate for air conditioners that work in coastal regions.

Samsung AC manufacturers use this technology that is called Multi Jet technology.

Blue Fin Condenser Technology: When it’s about corrosion, you should know that there are some technologies available available in the market which work to reduce corrosion.

Blue Fin Condenser is such a technology. This technology paints coils with anti-corrosive materials. Hence, it increases the overall life of the AC units.

You have to consider these technologies to avoid corrosion while purchasing the best AC in India.

07. Nature of Coolant used in AC

Coolant is also known as air conditioning refrigerant. It is a vital part of air conditioning and refrigeration equipment.

The primary function of the air conditioning refrigerant is to absorb the heat from the room.

It also delivers the heat outside. Once the temperature of the room gets eliminated, the room becomes cold.

The coolant remains in the form of gas that is compressed through the compressor at high pressure. Then it converts the gas into a liquid.

At extreme pressures, the liquid reaches a very high temperature. This liquid passes through the condenser coils, where the temperature of the liquid comes down, and the pressure remains high.

By releasing the high-pressure cold liquid, the AC units reduce the pressure.

Then the liquid travels through the evaporator coils. The heat gets absorbed by the cold liquid and eliminates the heat and makes the room cold.

The fans present in the AC unit also help to sustain the temperature. After absorbing the heat, the liquid evaporates and changes itself into a gas again.

The same procedure gets repeated continuously. This is how the AC unit functions.

Hence, naturally, air conditioning refrigerant is a vital aspect to consider while purchasing the best AC in India.

Refrigerant Global Warming Potential Ozone Depletion Potential
R 22 1810 Medium
R 410A 2088 Nil
R 32 675 Nil
R 134A 1430 Nil
R 290 3 Nil
R 600A 3 Nil

Types of Refrigerants

After knowing what a refrigerant is, now we will go to the types of refrigerants.

global warming potential air conditioner refrigerants
Source: Daikin

Chlorofluorocarbons (CFC): This type of refrigerant was the initial one that was used in AC units all over the world. These refrigerants are also known as R12 refrigerants.

Though these refrigerants were very effective, they played a massive role in the depletion of the ozone layer in the atmosphere.

Now, these types of refrigerants are not used in AC units.

Hydrochlorofluorocarbons (HCFC): For environmental concerns CFC refrigerants were replaced with the HCFCs. This type of refrigerant is known as R22.

It is the most common type of coolant used in AC units in India.

Though this coolant is also not so eco-friendly. Therefore, there you can see indications that these refrigerants will be phased out over the next 4-5 years.

Hence, you have to be careful when you buy the best AC in India with this coolant.

Hydrofluorocarbons (HFC) In comparison with the R22 coolant, the HFC refrigerants do not deplete the ozone layer much. Therefore these refrigerants are much eco-friendly.

Presently, there are three types of HFCs used that include R410A, R32, and R134.

Hydrocarbons (HC) These types of coolants are the most environmentally friendly. These AC coolants are known as R290 and R600A.

These refrigerants have zero effect on the ozone layer.

They have high energy efficiency and are also the greenest refrigerants available in the market today.

Environmental Impact of Air Conditioner Refrigerants

While you are looking for the best AC in India, you have to consider these aspects surely. Moreover, we all have a fundamental responsibility to our environment.

Hence, choosing the AC coolant rightly can play a big part in this regard.

06. Brand and After Sale Service

There are many top air conditioner brands as well as many normal brands available in the market. The main difference between good reputed brand and a normal brand is the quality of the product and the after sale service.

A top brand means great quality of product with good after sale service.

Therefore, we always recommend that you go with a reputed brand and always check the warranty information before purchasing.

An air conditioner with a maximum warranty period on the compressor as well as on other parts will save you lots of money in future.

In the market, you will get several AC brands such as Voltas, Whirlpool, Hitachi, LG, etc. These are considered as the best AC brand in India.

07. Budget

Although today air conditioners are no more a luxury item but they don’t come cheap also. The bigger the tonnage the costlier the air conditioner.

Also most of the branded air conditioners are bit costly compared to non branded ones. But you will get good quality product with good warranty and after sale service.

Also the inverter air conditioners are costlier than normal ones. But they will save you lots of money in long run.

Therefore, we recommend that you choose it wisely as you cannot change an air conditioner every year.

Best Air Conditioner (AC) in India – Frequently Asked Questions (FAQs)

1. How many times should the air conditioner get serviced?

It entirely depends on your usage. For example, if you are using the air conditioner for a minimum of 6 to 8 hours, you should get the unit serviced for once in 3-4 months.

Otherwise, if you don’t have a proper idea about your usage, the air conditioner should get serviced twice a year. To get the best service, you can consult with a leading HVAC service company.

A quality service provider can provide proper service, according to the size and situation of your AC unit. 

2. Can an air conditioner control humidity in the building?

High humidity or low humidity can cause poor indoor air quality and can result in airborne illness, mold growth, etc. After proper installation, the air conditioner should keep the air at a 40 to 60 per cent humidity level.

Still, it is recommended to choose an air conditioner with special features such as humidity control.

3. How can I save energy while using an air conditioner?

There are several steps that can help you to save energy while using an air conditioner. The steps include;

  • Adjust the louvres on your split AC so it can emit the air downwards while heating and upwards while cooling.
  • Clean the filter of your AC unit regularly.
  • Use ceiling fans to help circulate the cold air properly throughout the room.
  • Try to keep a professional maintenance schedule.
  • During summer, keep the windows properly shaded to keep the heat out as possible.

4. Why sometimes the air conditioner keeps icing up?

The air conditioning unit keeps icing up for various reasons. If this happens, you have to check the filter first as a dirty air filter can restrict the air from moving across the evaporator coil. Thereby it forms ice.

Ice forming puts high stress on the compressor, metals, and the blower motor. You can consult a reputed HVAC service company to fix this issue. 

5. What should I do if the air conditioner leaks water?

It is a common issue for many air conditioner users. If the drainage pipe of the air conditioner gets damaged or clogged with dirt, dust, or mold, the AC unit leaks water.

But there is nothing to worry about. To handle this situation, you should try to clean the drainage pipes on yourself first.

Otherwise, you should consult a reliable HVAC service company so that they can fix this issue.

6. Should I clean the filters regularly?

Yes, it would be best if you clean the filters regularly. If you clean the filters frequently, it will improve the cooling and heating system of your AC unit.

Thereby it will improve the indoor air quality of the air conditioner.

By regular filter cleaning, it will ensure proper airflow, and also it will help to keep your home free from allergens, dust, and germs.

According to the type of the filter, you may also clean it weekly or monthly.

7. How much time can it take to service an air conditioner?

Usually, an air conditioner servicing can take 20 minutes to 45 minutes, depending on the size of the AC unit. Dismantle, installation or gas charging of an air conditioner can take near around 30 to 60 minutes.

The required time of repairing or fixing any issue depends on the problem of the unit.

8. Why my air conditioner shows error codes like E3, E4 etc?

Every AC manufacturer has its own set of error codes. So, when there is a problem with your AC unit, it shows such error codes like E3, E4, etc.

These error codes display particular issues that the user or the technician can use to determine the exact problem with the unit.

If your AC unit shows such error codes, you can go through the operating manual that comes with the unit to understand the issue. Otherwise, you should consult with an HVAC technician. 

9. How long does an air conditioner unit last?

Usually, most of the air conditioner units last for approximately 10 to 20 years. When the AC unit starts to get aged, the efficiency begins to decrease as well.

When the efficiency starts to drop, you have to repair it or replace it immediately. 

10. Why my AC unit is generating the noise?

The AC unit may generate noise if it is not installed correctly. If your AC unit is continuously making noise, it may damage the internal circuits of the unit.

In this situation, you should immediately contact the AC service provider to fix this issue.

Best AC in India – Final Words!

So, we have just seen the list of the best ac in India 2021. We have also gone through a detailed Air Conditioner Buying Guide and some of the frequently asked questions.

In the above article, we have covered some important aspects of air conditioner such as its working, capacity, efficiency, star ratings, types of compressor, condenser coils and nature of coolants.

We trust that these information should be enough for you to make an informed buying decision.

If you still have any queries regarding the selection of the best air conditioner, post them in the comment section below. We will definitely try to answer them.

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66 thoughts on “7 Best AC In India (2021) – Expert Review & Buyer’s Guide!”

  1. Which 1 ton and 1.5 ton ac is best in Chennai-india now? Please suggest. I had LG LS Q12HNZD and LS Q18FNZD in mind but showroom people suggest different as my option is 2019 model.

  2. Amazing post! Your post is very informative and I felt quite interesting reading it. Your blog images are very nice. Thanks for posting such post and waiting for more in future.

  3. Amazing post! Your post is very informative and I felt quite interesting reading it. Your blog images are very nice. Thanks for posting such post and waiting for more in future.

  4. Excellent post! Your post is very informative and I felt quite interesting reading it. Your blog images are very nice. Thanks for posting such post and waiting for more in future.

  5. Amazing post! Your post is very informative and I felt quite interesting reading it. Your blog images are very nice. Thanks for posting such post and waiting for more in future.

    best ac guide in india </a> | best ac blog in india | ac buying guide in india

  6. Very informative article n I must say u covered almost all the relevant points to consider while buying a AC. My question is I want to buy a split ac 1.5 ton but I’m confused between Inverter or non Inverter as I checked with some ac service vendors (because thy repair and service the unit and know the better insight) all suggested me not to buy Inverter ac due to high cost of spares, problem due to lots of sensor used to cater more features etc etc… But after reading your article it’s clear that Inverter AC have more benefits. Can you help suggest Inverter AC is gud if running hours are more than 6hrs for home use. Also I’m confused which brand offers the best product quality,
    warranty on condenser n compressor, after sales service between Mitsubishi, Toshiba, Daikin or LG in east delhi region. Kindly advise.

    • First of all I am glad that my article has given you some value.
      Now to answer your first question I would suggest that you should definitely go for an inverter AC if you are going to use it for about 6hrs daily. It will not only save electricity bill for you & give you some monetary benefits in the long run but also nowadays most of the manufacturers are only making Inverter ACs. So, the price difference will go and spares will be more available.
      And when the question is about quality of product then all the above mentioned brands are equally good. But if you talk about warranty and after sale service then there is no one better than LG. They have very good stock of spares and mostly they use their own team to provide service whereas most of the others use third party service providers. So, you may face some issues.

  7. Shall I go for whirlpool 1.5 split AC as mentioned on no 7 . Will it work good,for lifetime performance,after sales support and in budget??

    • Yes. Surely you can go for it. All the air conditioners mentioned in the our post are good enough to be in the list.
      For the lifetime performance question, you cannot give guarantee to any electronic product. But on the basis of our research and customers’ feedback, we hope it will not disappoint you.

  8. Great article… Keep up the good work.

    Very interesting blog. A lot of blogs I see these days don’t really provide anything that I’m interested in, but I’m most definitely interested in this one. I just thought that I would post and let you know.

  9. Nice article about the best ac in india. Hitachi 1.5 Ton 5 Star Inverter Split AC is the best. Its cooling is very well.

  10. Checkout my website done a comprehensive research on Best Air conditioner in India 2020 with buyer guide and reviews

  11. A perfectly written article, I too have a detailed guide on the best air conditioners which you can check at my site!

  12. Very nice article. Has all the essential knowledge which we need to know before buying a air conditioner. Great work keep it up.

    • Then you can go for
      <a href="" target="_blank" rel="noopener noreferrer nofollow ugc">Daikin 1.5 Ton 5 Star Wi-Fi Inverter Split AC (Copper FTKR50TV White)</a>
      Product Link: <a href="" rel="nofollow ugc"></a>
      <a href="" target="_blank" rel="noopener noreferrer nofollow ugc">Voltas 1.5 Ton 3 Star Wi-Fi Split AC with Amazon Alexa (Copper 183WZJ White)</a>
      Product Link: <a href="" rel="nofollow ugc"></a>

    • The performance of Panasonic inverter split ac is between average to good.

      It works on twin rotary compressor. So the cooling is good.
      Here, you will get some very good features like stabilizer free operation, P2.5 filter, Eco-friendly R32 refrigerant.
      They are currently offering long 10 years warranty on compressor.

      But the indoor unit is small compared to others and the display is also not that bright.
      Get it from here: <a href="" rel="nofollow ugc"></a>

      You can also check these ACs from LG & Daikin
      LG : <a href="" rel="nofollow ugc"></a>
      Daikin: <a href="" rel="nofollow ugc"></a>

  13. Very helpful article. The best part is everything is explained in a detailed n simple way.. keep doing good work..

    • Thanks for your question. Its tough to get ac under 18000. You can check 1 ton split ac or window ac.
      You can also get a cooler. Check this: <a href="" rel="nofollow ugc"></a>

  14. I like this Blue Star 1.5 Ton 5 Star Inverter Split AC (Alloy, 5CNHW18QATX/IC518QATX, White) but this Air Conditioner is Silent ? There is Function for Auto Clean and Auto Sleep is there ? Life of Blue start AC is How many years ?

    Can any one please suggest me best Silent AC ? because i have Hitachi and it’s making much noise.

    • Yes this air conditioner is quite silent.
      Auto sleep function is there but it does not have auto clean function. For auto clean function you can go for
      LG 1.5 Ton 5 Star Inverter Split AC (Copper, KS-Q18YNZA, White) – <a href="" rel="nofollow ugc"></a>
      The life of an air conditioner depends on many factors like how you are using it, the maintenance etc. But you can expect around 10 years of life from the air conditioner.
      If you are looking for the best silent ac then go for
      Daikin 1.5 Ton 5 Star Inverter Split AC (Copper, FTKF50TV, White) – <a href="" rel="nofollow ugc"></a>


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