Best Air Conditioner in India – Reviews & AC Buying Guide

Best Air Conditioners in India – Reviews & Buying Guide

best air conditioners in India

Are you searching for the best air conditioners in India? You must do your research before making a decision. We have brought down a list of 10 best ACs in India to help you make the best purchase decision.

10 best Air Conditioners in India

1) Daikin 1.5 Ton 5-star inverter split AC (FTKF50TV16U)

best air conditioners in India

Daikin Industries Limited is a global leader in the manufacturing of residential and commercial air-conditioning systems. This Daikin 1.5 Ton 5-star inverter split AC model is a very popular one that has been highly favored by a large number of people. You can definitely choose this model if you are looking for best air conditioners in India.

Important Specifications

The power supply of this Daikin model is 1 50Hz 230V. The cooling capacity rated full/half (min-max) is 5.28/2.64 (1.0 – 6.0) KW. This product comes with an annual power consumption of 767 kWh. The ISEER / Star Rating is 5.33 / 5 Wh/Wh. The voltage range stands between 130-265 V. It makes use of 5.8 A cooling operating current. The panel color of this model is white. Other important specifications include:

Capacity – 1.5 tons

Energy efficiency – 5-star rating

Operation Limit – 10 to 50 CBD

Dimension (Indoor Unit) – 298 x 885 x 229 mm

Dimension (Outdoor Unit) – 595 x 845 x 300 mm

Power consumption Rated Full/Half (min-max) – 1290/450 (200-1700)W

Cooling capacity Rated Full/Half (min-max) – 18016/9008 (3412~20472)BTU

Operating current – 5.8 A

Airflow rate – 16.6 m3/min

Important Features of Daikin 1.5 Ton 5 Star Inverter Split AC

Power Chill Operation

This feature provides fast relief during extremely hot conditions. It ensures fast cooling by reducing the room temperature immediately.

3D Airflow

The 3D airflow feature circulates a cloud of cool air into every corner even in large spaces.

Econo mode

This power-saving mode makes this AC highly energy efficient. You can save a lot of money on energy bills in the long run.

Low noise level operation

Since this product works with low noise, you can enjoy a sound sleep. The airflow speed is optimized based on the noise level to ensure uninterrupted comfort.

Coanda Airflow (Radiant Cooling)

This feature guarantees the most enjoyable air-conditioning experience. You don’t need to worry about the air draft falling on your head. For providing a comfortable ambiance, the draft is directed upward to promote fast and even air circulation.

Neo Swing Compressor Technology

Ensuring smooth rotation, the neo-swing compressor reduces vibration and friction. Refrigerant gas leakage is prevented during compression with the utmost efficiency.


  • This Daikin model offers high energy efficiency with 5-star energy rating
  • It offers a smooth and fast distribution of cool air during the scorching heat
  • 1-year warranty on product, 1-year or condenser, and 5-year compressor warranty
  • High efficiency and low maintenance
  • It is an environmentally-friendly product
  • The sleep off timer allows you to prevent overcooling during sleep
  • You can expect a reduced noise level


  • You cannot find any LED display on this product
  • The price is slightly on the higher side compared to other models


2) Hitachi 1.5 Ton 5-star inverter split AC (Kashikoi 5100x)

best air conditioners in India


Hitachi is a well-known brand that offers a wide range of products including air conditioning systems. If you want to buy one of the best air conditioners in India, you can definitely consider this product. The star rating of this model is 5 and makes use of a rotary compressor. The rated power supply is 230/50/1 (Volts/Hz/Phase). This Hitachi 1.5 ton split AC comes with a rated cooling capacity (100 % load) of 5275 Watts.

Important Specifications

Energy efficiency – 5-star rating

Capacity -1.5 tons

Maximum cooling capacity – 20600 Watts

Rated Power Input (100 % load) – 1449 Watts

Rated ISEER – 4.7

Cooling seasonal energy consumption – 869.21 KWH

Important Features

Tropical inverter technology

This model is equipped with an innovative Tropical Inverter Technology. The RPM of the unique variable speed tropical compressor changes based on the power supply frequency adjustments of the compressor. You can find a seamless cascade vector DC inverter system with an inbuilt microcomputer which regulates the rotation perfectly. Kashikoi 5100x stands taller among traditional ACs due to this feature and offers cooling solutions exactly according to the needs of the room.

Fast and even cooling

The advanced technology used in this model ensures fast and even cooling. A large area can be cooled efficiently using clean and fresh air.

Expandable Inverter AC

Based on the increase of outdoor or indoor ambient temperature, this product expands its capacity. Since cooling capacity is expanded based on emerging situations, you can expect the best cooling even in adverse conditions. The humidity levels are efficiently controlled inside the room.

Stabilizer-free operation

Your AC gets maximum protection against power fluctuations due to the stabilizer-free operation.

Auto sleep mode

You don’t need to worry about over-cooling during sleep

Super silent operation

This Hitachi model doesn’t make any loud noise and makes you feel extremely comfortable

43 quality tests

This product has been made available after 43 quality tests to ensure superior performance


  • It is an eco-friendly refrigerant with no ozone depletion potential
  • You can expect high energy efficiency
  • Lowest-noise operation
  • 1-year manufacturer warranty, 1-year additional warranty, 5-year warranty for the controller, and 10-year for the compressor
  • Fast and even cooling
  • You can expect low-maintenance with this model


  • The design is slightly outdated
  • Lacks auto clean technology of higher models


3) Carrier 1.5 Ton 5 Star Inverter Split AC (Copper, ESKO NEO HYBRIDJET INV R32, CAI18EK5R39F0, White)

best air conditioners in India


Carrier is a global brand that is well-known for its innovative air-conditioning solutions. The Carrier 1.5 Ton 5 Star Inverter Split AC CAI18EK5R39F0 (white) model is a good choice if you want to buy one of the best air conditioners available in India.

Important Specifications

Energy efficiency – 5-star rating

Capacity – 1.5 tons

Noise level – 44 DB

Voltage – 230 volts

Cooling capacity (100%) – 5200 Watts

Cooling capacity (50%) – 2600 Watts

ISEER – 4.62

Compressor type – Variable

Electricity consumption – 871.07 units per year

Refrigerant Gas – R32

Important Features

Low voltage operation

You don’t need to worry about any interruption at low voltage levels. This AC performs efficiently even at a low voltage level of 195 V.

High ambient working

This model ensures efficient and smooth cooling even when the outside temperature reaches 55 degrees.

Innovative and robust design

The design of this model is robust and innovative. You can expect best-in-class performance and efficient and speedy outdoor cooling.

Flexi cool hybrid jet technology

This Carrier 1.5 Ton 5 Star Inverter Split AC comes with 4 operating modes, namely; free-running (very hot), 100% (hot), 75% (moderate warm), and 50% (comfortable). The energy consumption of the AC is adjusted efficiently to help you maintain energy bills at optimal levels.

Stabilizer-free operation

You can expect this AC model to perform exceptionally well between 150V and 280V even at 48C without stabilizer.

Innovative sleep mode

This feature permits the temperature to increase by 1C during the first two hours and then, the air conditioning system will be shut off automatically after 8 hours.


  • The well-designed air purifier and dehumidifier offer pure and clean air
  • The 4-mode cooling feature guarantees high energy-efficiency
  • 1-year product warranty, 1-year condenser warranty, and 10-year compressor warranty
  • The robust design makes it a highly durable indoor unit
  • Innovative sleep mode ensures efficient energy consumption during your sleep


  • The noise level is slightly higher compared to other products
  • It does not contain any sensors


4) Voltas 1.5 Ton 3 Star Inverter Split AC (Copper, 183VCZJ)

best air conditioners in India

Voltas is one of the most renowned brands in the Air conditioning manufacturing industry. If offers some of the best air conditioners in India. This Voltas 1.5 Ton 3 Star Inverter Split AC 183VCJ model comes with many innovative features. The capacity of this model is 1.5 tons. The full load capacity (100%) is 1685.

Important Specifications

Compressor type – High EER Rotary – BLDC

Refrigerant – R32

Power Supply [V/Hz/Ph] -230 / 50 / 1 Phase

Full Load Power (100%) [W] – 1590 Watts

Condenser Coil – Copper

Star rating – 3

Rated ISEER – 3.85

Important Features

4-way auto louver

This feature ensures even air distribution throughout a room

Low-frequency torque control

This feature makes equips this air conditioner to deliver constant temperature and save energy.

Eco-friendly R32 refrigerant

The refrigerant is an environmental-friendly one that doesn’t cause any harm to the environment.

Multi-stage filtration

This type of filtration eliminates dust and other impurities effectively. You can enjoy the cool and fresh air inside the room.

Active dehumidifier

The active dehumidifier identifies the indoor humidity precisely. During the monsoon season, it controls the humidity perfectly.

High ambient cooling

This feature provides maximum comfort even at 52C.

The highly efficient copper condenser coil

The copper condenser coil is highly durable. It enhances the efficiency of the cooling in the best possible way.


  • You can expect efficient cooling due to the high-quality and durable copper condenser coil.
  • Stabilizer-free operation
  • Appreciable environmental-friendliness
  • The noise level is very low
  • It is a highly energy-efficient AC
  • LED indicator makes this product user-friendly


  • The star rating is low compared to other high-end models
  • There is no noise while decreasing temperature


5) Daikin 1.5 Ton 5 star inverter split AC (FTKG50TV16U)

best air conditioners in India


Daikin air conditioning systems are extremely popular for their advanced features, high benefits, and amazing durability. The unique selling point of this brand is that it makes use of the most refined technologies to deliver exceptional performance. If you are on the lookout for the best ACs available in India, you can consider buying Daikin 1.5 Ton 5-star inverter split AC (FTKG50TV16U).

Important Specifications:

Cooling capacity Rated Full/Half (min-max) – 17100/8500 (8500~19400) Btu

Cooling capacity Rated Full/Half (min-max) – 5.0/2.5 (2.5~5.7)KW

Power consumption Rated Full/Half (min-max) – 1415/475 (475-1750) Watts

Annual power consumption – 824 kWh

ISEER / Star Rating – 4.70

Voltage Range – 160-265

Airflow rate – 15.4 m3/min

Operating current – 5.8

Important Features

Econo mode

Optimizing power consumption, this feature promotes efficient operation. You can find this function extremely beneficial when using the AC and other electrical devices at once on a shared electrical circuit.

Noise-free operation

You can have a sound sleep while using this AC because it offers a low noise level. Depending on the noise level, airflow speed is optimized to provide a comfortable environment.

Power chill operation

Rooms need fast cooling when extreme heat conditions exist. The Power Chill feature reduces the room temperature to provide immediate comfort.


The error is auto-detected and the related code is displayed on the remote screen. Identifying the underlying issue becomes easy without seeking the help of an expert.

Neo Swing Compressor Technology

This technology reduces vibration and friction because of smooth rotation. This technology also stops the leakage of refrigerant gas during compression.


  • The 3D airflow guarantees even air distribution to all parts of the room.
  • It comes with smell-proof operation
  • The R32 refrigerant is environmentally-friendly
  • This product as a sleep off timer
  • The inbuilt stabilizer prevents the need for using an external stabilizer
  • 1-year product warranty, 1-year condenser warranty, and 10-year compressor warranty
  • Overall life cycle climate performance


  • The large size of the outdoor unit consumes a lot of space
  • An LED display is missing


6) Sanyo 1.5 Ton 5 Star Inverter Split AC (Copper, SI/SO-15T5SCIA)

best air conditioners in india

Sanyo has been operating in the electronic appliance industry for the last 73 years. The uncompromising to quality is what separates this brand from others. The value for money proposition that comes with this air conditioner is simply amazing. If you are looking to find the best ACs in India, you can opt for Sanyo 1.5 Ton 5 Star Inverter Split AC (Copper, SI/SO-15T5SCIA).

Important Specifications

ISEER – 4.60

Star rating – 5

Annual Power Consumption – 857.89 kWh

Voltage – 230 V

Noise Level – 48/43 dB-A

Coil –Copper

Refrigerant gas- R32

Important Features

Glacier mode

If you want to enjoy high-speed cooling, you just need to switch on the glacier mode. This feature allows you to have 35% more fan speed and ensures fast cooling.

Built-in anti-dust filters

The Sanyo model has a built-in PM 2.5 and anti-dust filter that eliminates pollen, dust, and all other suspended particles. You can enjoy fresh and healthy air.

Dual Cool Inverter Technology

This feature ensures high comfort while reducing electricity bills. The two independent rotors in the compressor promote energy-efficient and speedy cooling.

Auto Restart

You don’t have to worry about resetting temperature after a power failure. This AC model restarts with the original settings when power is restored.

Self Diagnosis

The self-diagnosis feature gives you access to error codes. These codes are displayed on the IDU temperature display area to ensure fast troubleshooting.

Back-Lit Remote

The remote has an ergonomic square design that contains power on/off buttons and glow-in-the-dark temperature control to ensure ease of operation.


  • The Eco function makes sure optimized performance while offering high energy efficiency
  • The varying rotor speeds of this AC accommodate different usage patterns of various people
  • 100% pure copper coils provide high resistance to corrosion and speedy heat transfer
  • Corrosion-resistant hydrophilic fins guarantee longer condenser life
  • This product comes with an eco-friendly RR32 refrigerant
  • The sleep function auto-adjusts the temperature and ensures a comfortable sleep


  • The noise level is slightly higher compared to other models
  • The responsiveness of the remote control falls short on some occasions


7) Daikin 1.5 Ton 3 Star Inverter Split AC (Copper, ATKL50TV)

best air conditioners in India

Daikin is one of the most preferred air conditioning manufacturers in the world. This brand offers high-performing and durable split ACs for its customers. If you want to buy the best ACs in India with a 3-Star energy rating, you can think about purchasing Daikin 1.5 Ton 3 Star Inverter Split AC (Copper, ATKL50TV).

Important Specifications

Energy rating – 3-Star

Power supply – 1 50Hz 230V

Cooling capacity Rated Full/Half (min-max) – 5.0/2.5 (2.5~5.0)KW

Power consumption Rated Full/Half (min-max) – 1752/615 (615-1752)W

Annual Power consumption – 1045 kWh

ISEER / Star Rating – 3.70

Voltage Range – 160-265

Airflow rate – 16.2 m3/min

Important Features

Coanda Airflow

This feature provides the most enjoyable air-conditioning experience. The strong air draft is directed in the upward direction to allow the air to circulate into various corners of the room to create a relaxing ambiance.

Neo swing compressor

The neo-swing compressor offers a smooth rotation and lowers friction and vibration. During compression, you don’t have to worry about any leakage of refrigerant gas. These two aspects ensure silent and efficient operation.

Econo Mode

This function optimizes power consumption to enhance efficiency. This feature is extremely handy when you use the air-conditioner and other electrical devices on a shared circuit simultaneously.

Easy to recycle R32 Green Refrigerant

The refrigerant comes with zero Ozone Depletion Potential. The Modified Global Warming Potential (GWP) is 472. Since it is a single component refrigerant, the recycling process becomes extremely easy.


It identifies the error automatically. The remote screen displays the related code. Troubleshooting becomes fast and easy with this feature


  • This Daikin model comes with an active sleep off timer
  • The power chill function promotes fast cooling to bring immediate comfort
  • The speed of the airflow is optimized depending on the noise level to ensure interrupted comfort
  • Eco-friendly R32 refrigerant
  • It comes with an inbuilt stabilizer


  • The star rating is 3 only
  • Noise level is higher compared to other advanced Daikin models


8) Voltas 1.5 Ton 5-star inverter split AC (185V JZJ)

best air conditioners in India

Voltas is an established and reliable manufacturer of split AC air conditioning systems with an excellent reputation and credibility. The Voltas 1.5 Ton 5-star inverter split AC (185V JZJ) is considered as one of the best air conditioners available on the market today.

Important Specifications

Full Load Capacity (100%) – 5200 W

Compressor Type – High EER Rotary – BLDC

Full Load Power (100%) – 1355 W

Condenser Coil – Copper

Air Flow Volume – 950 CMH

Noise Level – ≤46 dB (A)

Rated ISEER – 4.51

Important Features

Wide voltage range operation

You don’t need a stabilizer because this Voltas model comes up with a low startup voltage feature. This product works under a wide operating range to offer the best protection against voltage fluctuations.

CO2 reduction

The R32 Green refrigerant reduces CO2 emission admirably. It can be described as an environment-friendly refrigerant.

Multi-stage filtration

The multi-stage filtration feature eliminates bad odors, allergens, and other harmful particles to deliver fresh and cool air.

Steady cool compressor

This product is loaded with a stable cool compressor that promotes stable cooling and high savings. The power consumption is optimized perfectly. Maintaining the right room temperature becomes very easy.

High ambient cooling

This feature offers you maximum comfort even at 52 Degree celsius


  • The sleep mode adjusts the temperature automatically to provide you with a sound sleep.
  • The self-diagnosis feature makes troubleshooting amazingly easy
  • The 3D airflow feature transfers a cloud of cool air into all parts of a room evenly
  • The low-frequency torque control maintains a constant temperature and offers high energy efficiency
  • Low maintenance
  • High ambient temperature cooling


  • No expandable cooling capacity
  • The cooling speed is a bit slower compared to some other high-end models


9) Hitachi 1.5 Ton 3 Star Inverter Split AC (Copper, RSD317HCEA)

best air conditioners in India

Several factors including quality engineering, longevity, high performance, and affordability make Hitachi inverter split ACs immensely popular. You can consider Hitachi 1.5 Ton 3 Star Inverter Split AC (Copper, RSD317HCEA) if you are looking to buy one of the most reliable air conditioners in India.

Important Specifications

Energy Efficiency -3 Star Rating

Noise Level – 36 dB

Voltage -230 Volts

ISEER Value: 3.8

Annual Energy Consumption – 1040 kWh

Battery Cell Type – Zinc Carbon

Suitable Room Size – 130 Square feet

Important Features

The anti-fungal multistage filtration system

The anti-fungal multistage filtration system offers clean and pure air inside the room.

Variable speed compressor

This feature adjusts the power based on heat load. You can enjoy good energy efficiency and reduced noise operation.

The efficient copper condenser coil

The copper condenser coil available on this Hitachi model ensures efficient cooling with low maintenance.

Anti-bacterial coating

This inverter split AC model from Hitachi is equipped with an anti-bacterial coating.


  • This product comes with an auto shut off feature
  • Highly efficient copper condenser coil ensures smooth operation
  • It offers pure and cool air
  • Full function remote with LCD
  • Variable speed compressor offers high energy efficiency


  • This product turns noisy at 41Db
  • It does not come with a long warranty period


10) Voltas 1.5 Ton 3 Star Split AC (Copper, 183DZZ (R32))

Voltas is one of the most respected and established brands in the AC manufacturing industry. Your search for the best air conditioners can easily end with Voltas 1.5 Ton 3 Star Split AC (Copper, 183DZZ (R32)).

Important Specifications

Rated Cooling Capacity – 5150 W

Refrigerant Gas -R-32

Rated Power Input- Cooling Watt -1450

Rated Current- Cooling – 6.4 Amps

Noise Level – ≤47 dB

Rated ISEER – 3.55

Power Supply – 230 / 50 / 1 Phase V/Hz/Ph

Important Features

Turbo cooling

The turbo mode of this AC focuses on cooling the room immediately. You can expect fast cooling compared to other models.

4-stage filtration

The 4-stage filtration process removes all types of allergens, impurities, odors and harmful particles to provide fresh and cool air.

Dual Display

You can find the set temperature as well as the current room temperature at the same time with the help of the dual-display feature.

Self Diagnosis

This model identifies the reasons behind failures and malfunctions and resets automatically.

Sleep Mode

This feature maintains a comfortable temperature by controlling power consumption. You can sleep comfortably without worrying about how to cut excess cooling.


  • This product is equipped with an environmentally-friendly refrigerant
  • You can find a dual-display feature on this model
  • You can expect fast cooling even at 50 Degree celsius
  • This Voltas model offers fresh and cool air
  • Troubleshooting becomes easy with the self-diagnosis feature
  • 1-year product warranty, 1-year condenser warranty, and 5-year compressor warranty


  • Shorter warranty period compared to some other air conditioning systems
  • Batteries are not included in the package


Best Air Conditioners in India Buying Guide

Best Air Conditioner Brands in India


Daikin stands taller among the top air conditioning system manufacturers. Unlike many other home appliance companies, Daikin focuses only on specialized cooling solutions. This focus on air conditioners helps this company develop the best quality products in the market.

The unique selling point of this brand is that it embraces the most advanced technology faster than several other brands. One good example is the Econo Mode. This feature is an innovative one that allows you to discover the power being used up by other home appliances like washing machines and hair-dryers. Importantly, the air conditioner adjusts its consumption based on how other appliances consume energy.

Another innovative feature introduced by Daikin is Coanda Airflow System. This feature does not throw out the cold air as many other ACs do. The air is guided above and promotes even distribution throughout the room. If you are looking to buy the best air conditioners in India, you can consider a good number of Daikin AC models.


Hitachi is a renowned Japanese multinational company with a successful track record of more than 110 years. It has been operating in several segments such as power plants, financial services, railway, and urban systems, information and telecommunication systems, air conditioning, constructional machinery, and more.

Hitachi Air Conditioners are popular for their quality, dependability, durability, and affordability. Many people prefer this brand when it comes to searching for the best air conditioners for corporate purpose buildings.

It is one of those manufacturers which introduced copper coil condensers in the market 5 years ago. Hitachi air conditioners are good at keeping a room cool even during the hottest summer months. You don’t need to worry about frequent maintenance when you use Hitachi products.


Carrier has been enjoying phenomenal success as an American air condition systems manufacturer since its inception in 1905. It is one of the most reliable manufacturers available in the Indian market. Many people look for Carrier brands while planning to buy the best air conditioners in India.

Quality does not come cheap. You need to pay a slightly higher price to buy their inverter split AC products. However, the credibility of Carrier products is outstanding. High operational efficiency and longevity can always be associated with this brand.

You can expect a high value for money when you buy Carrier AC products. You can find some innovative features like self-cleaning, auto-restart, and refrigerant leak detection. If you are searching for the best ACs, you can always depend on Carrier models.


Tata is a very familiar name in India. The name itself stands for credibility and trust. Voltas is a joint venture of Tata and Volkart Brothers. This air conditioning brand has been offering quality products for the last 65 years.

A large number of customers are loyal fans of this product. It is one of the best ACs being sold in India for several years. The Voltas products are economical but retain exceptional quality. You can find many useful features like auto restart, multistage filtration, and humidity control on these models.

You can associate an extensive dealer network with this brand. It has a large number of service centers spread throughout India.


Sanyo is a well-known and trusted brand that has been offering world-class products since 1947. The electronic appliances are amazingly popular among millions and millions of people in India.

In 1989, Sanyo introduced the first 3-way multi-air conditioning system that offers cooling and heating simultaneously. The air conditioning products available on the market stand for quality, efficiency, and longevity as well.

Many people rate Sanyo products as one of the best air conditioners available in India. To ensure supreme quality and high performance, all products have been subjected to strict quality checks. Especially considering the price point they are available at, they make fantastic value for money proposition.


LG is a famous Korean brand, hugely renowned for its electronic appliances. You can find some high performing air conditioning products that embrace the latest technology under the LG brand. The existing users say that consistent cooling is the specialty of LG products.

Founded in 1947, LG is a very popular brand in India. You can expect fast cooling with the products offered by this company. It not only offers the best ACs but also offers responsive after-sales services for customers with the help of a wide range of dealer networks.

Blue Star

Blue is an Indian brand that has managed to win the trust of many customers by offering quality air conditioning products. It has been operating in the air conditioning industry for several decades with an excellent reputation.

You can come across the Blue Star products in most of the shopping malls and offices in India. The Blue Star ACs provide the best in class cooling and appreciable longevity. You can find a window as well as split air conditioners.

You can find many revolutionary features including iFeel technology and self-diagnosis on these products. The Blue Star products are designed to ensure optimal comfort for the users.

Choosing the right capacity of the air conditioner?

What is tonnage?

You can come across different types of ACs with 1, 1.5, 2 and 5 tonnages. What does a ton mean? 1 ton refers to the quantity of heat needed to melt a ton of ice in a day. The standard quantity is 288,000 BTU or British Thermal Units. What does it mean? If you have a one-ton AC, it is going to use 12000 BTU (288,000/24) from a room within one hour. If the tonnage of your AC is 2, it utilizes 24, 000 BTU in an hour.

Important factors that influence the capacity of the air conditioner

The most important factor is the ambient temperature of the surrounding air. The second factor is the volume of the room. You also have to consider the quantity of furniture fitting before deciding on the capacity of the AC.

Ambient temperature

If you are living in a place where summers are really hot and the temperature may reach around 45 C, you have to buy an AC with a higher tonnage compared to cooler places with reasonably hot summers. You can buy an AC with a lesser tonnage if you are living in a place with a colder climate.

Room volume

The volume of the room is an important consideration. As the room size increases, your air conditioning system has to cool more air volume. The cooling effect needs to be properly maintained as well. This aspect makes an impact on tonnage.

The amount of furniture and fittings available in a room

When you decide to buy the right tonnage air conditioner, you have to check the quantity of the furniture and fittings available in your room. Heat gets trapped in the air as well as the things placed inside the room. If you have an empty room, it can be heated with less tonnage. The ton of the AC needs to be higher if the room contains a lot of furniture, carpets, computers and other types of items. Also, the presence of a desktop computer can make the room dramatically warmer.

What capacity or how much ton air conditioner you should buy?

You have to take into consideration all these factors while deciding on the capacity or tonnage of an air conditioner. It is also necessary to focus on a few more important aspects. The heat available in the apartments on the topmost floor is higher compared to other floors below. The presence of warm air, as well as the heat transfer by conduction from the roof, makes topmost floors hotter. If you are planning to buy an AC for an apartment located on the topmost floor, you have to go for a larger one with high tonnage.

If you analyze the conditions in India, you can find that a one-ton AC is capable of cooling a small room with a size of 10 feet ×10 feet or around 100 square feet with 2 people. As far as a 1.5 ton AC is concerned, it can cool a room with a size of 10 feet × 15 feet or around 150 square feet with 4 people reasonably from 35 degrees Celsius to 22 degrees Celsius. The bottom line is that a 1 ton AC is a good choice for a small room. For medium-sized rooms, you need 1.5 ton AC. If you want to cool large rooms including halls, you have to opt for 2 or 3 ton AC.

Electricity consumption of the air conditioners

You need to have a clear idea of how much electricity an AC consumes. It is one of the most important aspects each AC buyer should know. The power consumption of an AC depends on a good number of factors such as star rating, tonnage, and usage.

Star rating

The star rating gives you a clear understanding of the electricity consumption of the air conditioner. The agency that provides the star rating is BEE (Bureau of Energy Efficiency). Air conditioners with higher star ratings can be described as more energy-efficient options available on the market.

How do the BEE Star ratings work?

BEE star rating refers to the ratio between an air conditioner’s cooling ability measured against the electrical input in watts. As mentioned above, a one-ton AC comes with a capacity of 12,000 BTU per hour. You need to understand that 1 BTU/hour is 0.29307107 watts. So the 12,000 BTU every hour can be converted to 3516 watts. The efficiency of a 1 on AC with an input of 1100 watts of power stands at 3516/1100. It is represented as 3.2. This figure places an air conditioner somewhere between a 3 Star and 4 Star AC.

How can you know about the number of stars that represent a 2.9, 3.2 or other similar decimals? You can visit the website of the BEE to get the latest updates. Continuous upgrading is done at regular intervals. The important thing is that a 5-star rating in 2017 becomes a 3-star rating in 2020. You can check the BEE website to get a fair idea of ISEER (Indian Seasonal Energy Efficiency Ratio). It is a measurement launched by BEE in 2016.

How much star AC I should purchase?

When you buy the best air conditioners in India, you have to focus on the annual units consumed. Based on your needs, you can buy one with a higher star. However, you have to make sure that the model is current. It is foolish to pay a premium for a 2016 5 Star AC model. The current rating of such a model is probably a 3 Star. When it comes to choosing between a 3 star AC for 35000 and a 5 star AC for 45000, you need to take into consideration the expected longevity of the equipment and amount of usage. A clear understanding of the lifespan and hours of running helps you decide on how much the additional power cost can be covered by the 10,000 savings.

What is an inverter air conditioner?

Everybody talks about inverter ACs nowadays. What is an inverter AC? It is an air conditioning system that works on Inverter Technology and helps the user save an appreciable amount of power. The compressor of an inverter air conditioner works on variable speeds i.e. it can increase or decrease its capacity according to the cooling requirement of the room.

Difference between fixed speed AC and inverter AC

The compressor of a fixed speed AC works in full swing when it is switched on. Once it reaches the optimum temperature, the compressor stops functioning and the fan keeps on working. When the temperature reaches beyond the threshold limit, the compressor takes over and starts functioning again at full capacity. The fact of the matter is that the compressor of a fixed speed AC functions only at two speeds.

An inverter AC works differently. The compressor of an inverter AC works at variable speeds. This technology does not allow the compressor to switch off and keeps it at ON mode at varying speeds. The power consumption is controlled efficiently because of the varying speeds. The inverter technology can be termed as a power-saving feature that is found only in the split AC models.

Benefits of inverter technology

Are you planning to buy one of the best air conditioners in India? You can certainly consider purchasing an inverter split AC from a leading brand. The biggest advantage of choosing an inverter AC unit is high energy-efficiency. A 3-star inverter AC performs on the same level of a 5-star normal split AC. The ability to run at variable compressor speeds and tonnages based on the heat inside the room is what makes the inverter technology in an AC truly superior. Various studies show that the overall efficiency of inverter AC units is 7% higher compared to standard models with the same star rating.

Other advantages of inverter technology are:

Maintaining constant room temperature

Efficient cooling and heating

Highly suitable for large as well as small rooms

High-quality refrigerants of inverter split AC models make them environmentally-friendly

Disadvantages of inverter technology

Power consumption increases if your room is not properly insulated

The cost of inverter split ACs is higher compared to standard models

Copper Coil vs Aluminium Coil

Three important processes can be associated with AC units, namely; compression, condensation, and evaporation. The refrigerant gas inside the coils needs to be transferred in liquid and gaseous forms. That where the importance of choosing the best coil comes in.

Which one is better; copper or aluminium?


The malleability of aluminium is higher than copper. Aluminium can be molded into any shape with ease and comfort. This aspect makes aluminium a highly preferred choice to make AC coils.

Heat exchange

Most advanced inverter split AC models are making use of copper coils or aluminium coils. Copper stands taller in terms of the heat transfer coefficient compared to aluminium. If you want an AC with excellent heat exchange, you can choose one with copper coil


The location of the condenser coil in an AC unit is in the external units. This aspect makes them vulnerable to quirks of weather. Maintenance becomes easy as far as copper coils are concerned. When it comes to aluminium coils, they need to be kept in heavy-duty cabinets.


The aluminium coils are more affordable than copper. That is exactly why air conditioning systems with aluminum coils come at a cheaper price. Therefore, AC units with aluminium coils are cheaper.


Since an AC operates in a damp environment, corrosion becomes a serious concern. It creates a layer over the coil to disturb the conductivity. Leading manufacturers make use of Blue Fin Condenser Technology to protect the coil efficiently. It is the process of paining coils using anti-corrosive materials. Some AC models come with aluminium micro-channel condenser to prevent galvanic corrosion.

Air Conditioning Refrigerant

A refrigerant, also known as the coolant, is an integral part of an AC. The primary function of a refrigerant is to absorb heat from the room and sends it outside. When the heat is eliminated, the air in the room cools down.

How do refrigerants operate?

The coolant or refrigerant is in the form of a gas. The compression process performed by the compressor turns the gas into a liquid. This process is done at very high-pressure levels. When the pressure levels are high, the temperature of the liquid also increases considerably. As the liquid goes through the condenser coils, the liquid temperature is reduced. However, the pressure stays at high levels. For lowering the pressure, the high-pressure cold liquid is released through an expansion valve.

Once it is done, the liquid is transferred through the evaporator coils. The heat available in the room is absorbed by cold liquid before sending it outside. This situation cools down the air in the room. The temperature level is maintained by the fans in the AC unit.

After absorbing the heat, the evaporation of the liquid takes place to change to gas form. When an air conditioning system works, this process is repeated many times.

Different types of refrigerants

You can come across different types of refrigerants including Chlorofluorocarbons (CFC), Hydrochlorofluorocarbons (HCFC), Hydrofluorocarbons (HFC), and Hydrocarbons (HC).

The CFC refrigerants, also known as R12 refrigerants, were used in the air conditioners during the beginning phase of the AC revolution. Since they were causing ozone layer depletion in the atmosphere, manufacturers began to look for better alternatives. That is when HCFC coolants were launched.

Although the CFCs (R12 coolants) were replaced by the HCFCs(R22 coolants), the environmental issues were not addressed properly. This led to the emergence of HFC coolants. Compared to the previous two versions, these refrigerants protect the environment in a much better way. The HFCs are available in three different types; R410A, R32, and R134. Most of the inverter split air conditioning systems available today in India make use of R32 refrigerants.

Hydrocarbons (HC) are the most advanced ones available today. This highly eco-friendly version, also known as a green refrigerant, is slowly gaining in popularity in India


When it comes to choosing one of the Best air conditioners in India, you have to look at the tonnage, size, star rating, capacity, room position in the building, and frequency of use. You also have to be mindful of some technical aspects including compressor coil and refrigerant before making a buying decision. First of all, you should know your needs. When you are clear about your needs and the budget available, you can make an informed decision. Various manufacturers offer different types of products nowadays. You must consider the credibility and reputation of the manufacturer. Top companies offer excellent warranty packages to safeguard the interests of the customers.

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