We’ve spent over 70 hours in researching, comparing and reviewing over 45 1.5-ton split air conditioners, and we believe LG KS-Q18YNZA offers you the best combination of superior energy efficiency, quick cooling, intelligent features and very high durability.

Top Pick

A perfect Split AC that we recommend for all.

Best 1.5-Ton Inverter Split AC


This 5-star inverter AC offers very high energy efficiency. This is the most durable inverter AC with a very highly durable compressor with 10 years warranty. Gold fin copper condenser and intelligent features also make it an excellent choice.

Budget Pick

Best Split AC which is not heavy for your pocket.

Voltas 1.5-Ton 3-Star Split AC 183DZZ

Voltas 183DZZ

An affordable 1.5 ton split air conditioner that may be a good choice if you have a very limited budget and if you plan to use it for only a few hours daily.

Energy Efficient

Best 1.5 ton Split AC for less power consumption.

Most Energy Efficient 1.5-Ton Split AC

Daikin FTKF50TV

This is the most energy efficient inverter AC with ISEER rating of 5.33. Under standard test conditions, this air conditioner consumes only 767 units per year without compromising on the cooling efficiency.

The summer season has finally hit India, and it’s time to turn on the air conditioner. However, if you are still looking forward to buying an air conditioner for this summer, you are in the right place. With tons of options available in the market, it is difficult to choose the best air conditioner.

We have made a list of the best 1.5-ton split air conditioner that you can buy to sigh a relief for this summer plus the upcoming summers for the years to come.

Each one of these air conditioners in this list has been extensively reviewed by our product experts so as to provide all the information that you may need to make the right choice.

10 Best 1.5-Ton Split AC in India – Reviews

1. LG 1.5 Ton 5 Star Inverter Split AC (Copper, KS-Q18YNZA)

The LG 1.5 Ton 5 Star Inverter Split AC uses Dual Cool Technology which while saving the electricity cools the room at a lightning-fast speed. This durable AC is powered with 100% copper condenser. The Ocean Black protective coating on both indoor and outdoor unit provides enhanced durability and protects the AC from the corrosive substances like sand, salt, pollutants, and industrial smoke. It uses the Gold Fin Condenser Technology which protects the AC from the corrosive elements and thus, extends the life of this 1.5 ton split AC.

LG 1.5-Ton 5-Star Inverter Split AC KS-Q18YNZA

Coupled with Active Energy Control, the LG air conditioner further saves electricity consumption. The AC is designed to detect low refrigerant which can leave the room uncomfortable and hot. The Himalaya Cool Technology instantly cools your room to provide you extreme comfort. Summer and humidity is not a right combination, thanks to the Monsoon Comfort Technology available in the room which ensures that this LG split AC can also be used during monsoon.

The Auto Clean feature blocks bacteria and mold build-up and keeps the air conditioner clean. You can go wireless with LG 1.5 Ton 5 Star Inverter Split AC because it comes with stabilizer free operation. The Hi-Grooved Copper provides better heat withstanding and enables oscillatory movement for even cooling. The AC has a high cooling score of 5, and you can be sure of the fact that it will give its optimum performance even at high ambient temperature.

LG 1.5 Ton 5 Star Inverter Split AC is environment-friendly because it uses R32 refrigerant which doesn’t contribute to ozone depletion and has low global warming potential.

ISEER: 4.73*
Cooling Capacity: 5100 W
Electricity Consumption: 835.50 Units per year

Warranty: 1 year on product, 10 years on compressor.

Pros Cons
Very high energy efficiency The remote buttons are missing night glow feature
Highly durable inverter compressor with 10 years warranty High price
Gold fin copper condenser
The Himalayan Cool Technology instantly cools the room
The energy control function saves up to 60% of the electricity
It has horizontal auto-swing that ensures even cooling

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2. Voltas 1.5 Ton 4 Start Inverter Split AC (Copper, 184V SZS)

The Voltas AC has a high ambient cooling which can make you feel comfortable when the temperature outside is exceptionally high. The Voltas 1.5 Ton inverter AC comes with an Advanced Air Purifier that keeps the air clean by actively removing the harmful odor.

Voltas 1.5-Ton 4-Star Inverter Split AC 184V-SZS

The 100% copper coil makes the product not only durable but also provides efficient cooling. There is no need to use any kind of stabilizer with the AC for protecting it from voltage fluctuation because it supports stabilizer free operation. Active Dehumidifier controls the level of humidity inside the room during the monsoon season to keep the room comfortably cool. It has an environment-friendly refrigerant R410A.

The Low-Frequency Torque Control maintains a constant temperature while saving energy. The multi-stage filtration removes odors, allergens, and other harmful particles to give you clean air. The four-way auto louver cools the air uniformly in the room. The 46 dB noise level ensures silent operation of the air conditioner. The timer feature allows you to switch on and off the AC as per your convenience. Also, it has night glow buttons on remote which allows the users to manage the AC in a hassle-free manner during the night. It is one of the best value for money 1.5 ton inverter AC.

ISEER: 4.1*
Cooling Capacity: 5200 W
Electricity Consumption: 981.81 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Copper condenser coil No backlit on the remote
Steady cool inverter compressor Indoor fan noise level is a bit high
Stabilizer free operation, works fine with even high voltage fluctuations (150 V – 270 V)
Environment-friendly refrigerant R410A

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3. Carrier ESKO NEO HYBRIDJET 1.5 Ton 5 Star Inverter Split AC

This air conditioner uses Hybrid jet Technology to provide instant cooling. It offers four operating modes that support the following weather conditions: very hot, hot, moderate-hot and comfortable. Carrier 1.5 Ton inverter AC supports low voltage operation (150V-280V), and there will be no interruption event at low voltage and high ambient temperature. It works efficiently without a stabilizer even when there is a substantial voltage fluctuation. It is one of the best 1.5 ton split AC in India.

Carrier Esko Neo Hybridjet 1.5-Ton 5-Star Inverter Split AC

This AC is made to work flawlessly even at high temperatures up to 52C. This is ideal for many parts in northern India which experience very high temperatures during summers. The innovative design of the AC gives best in class performance and fast indoor cooling. The convenience features available on Carrier 1.5 Ton 5 Star Inverter Split AC are auto restart, timer, child lock, sleep mode, memory features, self-diagnosis, and refrigerant leakage detector. The AC is highly energy efficient as it has variable speed compressor which adjusts itself depending on the heat load.

The indoor unit is very quiet, with noise levels of just 44/42/38 (dB) at High/Medium/Low fan speed respectively.

This 5-star rated inverter AC from Carrier uses the next generation refrigerant, R-32, that efficiently carries heat and has lower environmental impact. Not many people know this but apart from being environment-friendly, R-32 refrigerant can also reduce electricity consumption up to 10% compared air conditioners using R-22 refrigerant.

If you are someone who loves sleeping in dark then you can also turn the temperature display on/off as per your requirement.

‘Follow Me’ feature is another very useful addition. When this feature is activated, the remote will act as the thermostat instead of the indoor unit. Most AC’s thermostat is located in the unit and therefore does not give an accurate idea of actual room temperature because the temperature around the AC unit will always be lower than the actual temperature in the room. This feature will help in improving the cooling efficiency of the AC.

This AC’s auto-cleanser function automatically cleans the indoor unit by removing all the dust particles. Triple air filtration with an electrostatic dust filter, PM 2.5 micron filter, and a composite air freshening mesh give you clean and pollutant free air to breathe.

ISEER: 4.62
Cooling Capacity: 5200 W
Electricity Consumption: 871.07 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
The R32 refrigerant is eco-friendly High Price
It supports two modes of the compressor which helps in saving electricity
Efficiently cools the room silently
Innovative design
Stabilizer free operation (150V-280V)

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4. Daikin 1.5 Ton 4 Star Inverter Split AC (Copper, FTKP50TV)

This Daikin 1.5 Ton inverter AC uses the supreme ODU Heat Exchanger Technology that increases the longevity and the durability of the air conditioner. The Econo Mode limits the maximum power consumption while efficiently cooling the room. This mode comes handy when you are sharing the same electrical circuit with other electric devices, and apart from that, it helps in reducing the electricity bill. It has a built-in stabilizer that keeps the AC safe during voltage fluctuations (161V – 264V).

Daikin1.5-Ton 4-Star Inverter Split AC FTKP50TV

The AC’s self diagnosis feature automatically detects any error and shows the relevant error code on the remote screen. It helps in easy and early diagnoses and also results in quick resolution of the problem. The Coanda Airflow present in Daikin 1.5 Ton 4 Star Inverter Split AC makes sure that the air doesn’t flow directly on your head and is instead directed upward. The air is circulated into the corners of your room to create a comfortable ambiance. During extreme heat, the Power Chill Operation can be used for quick cooling.

The Good Sleep Off Timer ensures that the excessive cooling of the room is prevented while you are sleeping. The AC automatically switches to the normal mode after the preset time for the mode has elapsed. The Neo Swing Technology used in the compressor decreases the vibration, friction and prevents leakage of the refrigerant. The air conditioner uses R32 refrigerant that has zero ozone depletion potential.

ISEER: 4.17
Cooling Capacity: 5000 W
Electricity Consumption: 928 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Energy efficient 4-star inverter ac No temperature display
The internal unit looks sleek and modern
Environment-friendly R32 refrigerant
Works fine under wide voltage fluctuations (161V – 264V)

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5. Daikin 1.5 Ton 5 Star Inverter Split AC (Copper, FTKF50TV)

The Daikin 1.5 Ton 5 Star Inverter Split AC is the most energy efficient inverter AC. The biggest USP of this AC is it’s high energy efficiency ISEER rating of 5.33. Under standard test conditions this air conditioner consumes just 767 units per year. It supports Econo Mode that allows the unit to work efficiently by keeping in check the maximum power consumption.

Daikin 1.5-Ton 5-Star Inverter Split AC FTKF50TV

When during the extreme temperature, you need quick cooling, you can use the Power Chill Operation. The noise level is profoundly low, and it is optimized to give you maximum comfort while sleeping. The Coanda Airflow of this 1.5 ton split AC gives you the best air-conditioning experience by circulating the air into the corners of the room, and upward steer of the air ensures a comfortable ambiance.

It also allows the users to set a temperature shift value; when the room becomes colder then the set value, it automatically turns off. The Neo Swing Technology based compressor gives the AC a smooth rotation and allows it to function efficiently and quietly. It uses a green refrigerant which is environment-friendly.

But we find it very difficult to understand why this Daikin AC does not come with a basic feature like the temperature display on the indoor unit.

You’ll have to check the remote display every now and then, if you want to see the temperature setting. And it becomes more difficult during night as the remote display is not backlit and you can’t see the temperature and mode settings without lighting your mobile phone or night lamp.

ISEER: 5.33*
Cooling Capacity: 5280 W
Electricity Consumption: 767 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Most energy efficient inverter ac with ISEER rating of 5.33*, consumes very less power No temperature display in the AC unit
Doesn’t need a stabilizer Backlit display and glow keys are missing on the remote which makes it difficult to operate it during the night
It cools the room instantly even at 50 degrees High price
R32 environment-friendly refrigerant gas

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6. Voltas 1.5 Ton 3 Star Split AC (Copper, 183DZZ)

This 1.5 ton split AC from Voltas is one of the most affordable 1.5 ton split air conditioners in India. However, this air conditioner is not as efficient as the other inverter split ACs reviewed here.

Voltas 1.5-Ton 3-Star Split AC 183DZZ

This AC may be a good choice for people with a very limited budget and if AC is to be used for only a few hours daily.

Stay away from this AC, if you would like to keep your monthly electricity bills in control.

It has a high ambient cooling which gives you instant cooling even when the temperature outside is as high as 50-degree Celsius. The Voltas 1.5 Ton 3 Star Split AC can sense the indoor humidity and then with the help of the active humidifier controls it, and therefore it can be used even during monsoon season.

The turbo mode of the AC instantly cools the room. The sleep mode cuts down both excessive cooling and power consumption and allows you to have a good night sleep. This AC features 4 stage filtration, that removes odors, allergen, and other harmful particles, and gives you fresh air to breathe.

The AC self-diagnoses any failure and abnormalities and then reset automatically. The Voltas 1.5 Ton 3 Star Split AC supports the dual display and allows you to see the set temperature and the room temperature simultaneously. The glow in the dark, remote buttons will enable you to operate the AC during the night in a hassle-free manner. The current temperature and mode settings can be locked to avoid accidentally change of settings, especially by children. It has 100% copper condenser coil that makes the unit super durable.

The product comes with a comprehensive warranty of 1 year and 5 years warranty on compressor.

ISEER: 3.51*
Cooling Capacity: 5120 W
Electricity Consumption: 1128.65 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Copper condenser AC at affordable price Very basic features, no horizontal swing
The dual display allows you to compare the set temperature and room temperature Consumes more electricity
The glow light buttons on the AC remote makes the operation of the AC easy during the night Both the indoor and outdoor units are little noisy
Very attractive price R-22 refrigerant gas, contributes to ozone depletion

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7. LG 1.5 Ton 3 Star Inverter Split AC (Copper, KS-Q18YNXA)

The LG 1.5 Ton 3 Star Inverter Split AC uses Dual Inverter compressor that quickly cools, is more durable and makes very low noise. It has 100% copper coil with Ocean Black protection to keep the 1.5 ton split AC safe from the pollutants to make it more durable.

LG 1.5-Ton 3-Star Inverter Split AC KS-Q18YNXA

The active energy control avoids extra electricity cost by saving energy. The dedicated ‘Energy Saving’ button on this Ac’s remote let’s you adjust the power consumption of this AC and save up to 57% of electricity.

The AC also detects low refrigerant level that can leave the room uncomfortable and hot. The AC can also be operated without a stabilizer. The Himalaya Cool Technology cools the room instantly. By turning the auto clean mode, the bacteria and mold will be cleaned automatically.

The comfort air feature (this is similar to the Coanda Airflow feature in Diakin air conditioners) adjusts the air flow so that the air does not fall on the people in the room but cools the entire room and you are guaranteed a comfortable cooling experience. The R32 refrigerant used in LG 1.5 Ton 3 Star Inverter Split AC has low global warming potential in comparison to other coolant and is 100% ozone safe. The Gold Fin condenser used in the air conditioner is designed to withstand corrosive element, dust, rain, and salty air.

The Monsoon Comfort Technology of the air conditioner keeps the level of humidity in check. The LG 1.5 Ton 3 Star Inverter Split AC has an anti-bacterial filter, dust filter, active carbon filter and deodorizing filter. Also, there are night glow buttons on the remote.

ISEER: 3.68*
Cooling Capacity: 5000 W
Electricity Consumption: 1050.84 Units per year

Warranty: 1 year on product, 10 years on compressor.

Pros Cons
The Himalaya Cool mode instantly cools the room No back lit remote
The energy saving mode helps to reduce the electricity bill No horizontal swing
Significantly quieter operation Air flow is not impressive
Environment-friendly R32 refrigerant Cooling performance on normal mode is not that good
Low refrigerant detection
Dual inverter compressor with 10 years warranty
Highly durable Gold fin condenser with ocean black protection

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8. Mitashi 1.5 Ton 3 Star Inverter Split AC (Copper, INA318K50)

The Mitashi 1.5 Ton 3 Star Inverter Split AC has 100% copper coil that makes the air conditioner durable and reliable and apart from that, it also enhances the heat transfer capability. It uses R410A refrigerant which is eco-friendly.

Mitashi 1.5-Ton 3-Star Inverter Split AC INA318K50

You can now say goodbye to dust mites, smog, road dust, bacteria and pollen as Mitashi 1.5 Ton 3 Star Inverter Split AC has an anti-dust filter. It has an easy-to-read digital display. The two-way swing of the air conditioner allows the air to flow in a vertical direction which in turn offers superior cooling.

It has two-way drainage which makes the installation of Mitashi 1.5 Ton 3 Star Inverter Split AC a pretty easy task because you can connect the drain pipe either from left or right. The turbo cooling mode cools the room by operating the fan at the highest speed. It has a multi-fold evaporator coil that provides efficient cooling by increasing the coil size.

The dehumidifier present in the air conditioner keeps the humidity level in check. The sleep mode of it automatically switches off the air conditioner after eight hours. The energy saver mode drops the power usage and thus reduces the cost of high power consumption. After a power cut, the air conditioner restarts with the same settings.

ISEER: 3.81
Cooling Capacity: 5200 W
Electricity Consumption: 1056.02 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Copper Condenser Brand value
Very attractive price, 3-Star inverter AC at the price of non-inverter ac The outdoor unit is noisy
The multi-fold evaporator coil for better cooling efficiency Brand is not so known, customer service may not be so good
100% copper condenser coil
Two way drainage, take out drain pipe either from left or right side of the AC

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9. Voltas 1.5 Ton 3 Star Inverter Split AC (Copper, 183V CZT/183 VCZT2)

This 1.5 ton 3-star inverter ac from Voltas comes with 100% copper condenser coil that provides better cooling and requires low maintenance. The two stage steady cool inverter compressor provides steady cooling and energy efficiency. The unique features of Voltas 1.5 Ton 3 Star Inverter Split AC are an anti-bacterial filter, dehumidifier, and dust filter.

Voltas 1.5-Ton 3-Star Inverter Split AC 183V CZT

It uses R410A refrigerant gas that has no ozone depletion potential. The self-diagnosis feature automatically detects any error in the air conditioner. The inbuilt stabilizer protects against even high voltage fluctuations from 150 V – 270 V.

This AC also offers noiseless operation with noise level as low as 32 dB

ISEER: 3.7
Cooling Capacity: 5150 W
Electricity Consumption: 1088.03 Units per year

Warranty: 1 year on product and 5 years on compressor.

Pros Cons
Protection against wide voltage fluctuation from 150V – 270V The vertical swing works on the angle from 90 to 180 only
Attractive price Boring design
The noise produced is almost negligible No horizontal swing
Copper condenser and inverter compressor
Ozone friendly R410A refrigerant

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10. Hitachi 1.5 Ton 4 Star Split Inverter AC (RSN/ESN/CSN-417HCEA, Copper)

When it comes to buying an air conditioner, Hitachi stands out as a brand that can be trusted. Hitachi 1.5 Ton 4 Star Split Inverter AC comes with a unique variable speed tropical compressor that automatically varies its speed and refrigerant flow to give you faster, economical cooling, even at high temperatures of up to 52 degrees Celsius.

Hitachi 1.5-Ton 4-Star Split Inverter AC RSN/ESN/CSN-417HCEA

The inner-grooved copper condenser coil helps in quick and optimum refrigerant flow for superior efficiency. It has the dehumidification feature which makes it ideal for the monsoon season too. The anti-bacterial feature and dust filter of Hitachi 1.5 Ton 4 Star Split Inverter AC ensure that you only breath clean air. Hitachi 1.5 Ton 4 Star Split Inverter AC uses inverter compressor which is one of the qualities that makes this air conditioner highly preferable as it provides excellent cooling while saving electricity.

The intelligent filter clean indicator alerts you when the filter needs cleaning. This is a very useful feature as it avoids any chances of performance deterioration by alerting you well in time. You won’t have to open the front-panel just to check whether the filter needs to be cleaned or not.

ISEER: 4.20*
Cooling Capacity: 5100 W
Electricity Consumption: 940.57 Units per year

Warranty: 1 year comprehensive and 5 years on compressor.

Pros Cons
Inner-grooved copper coils for better efficiency Doesn’t have a digital/temperature display
Variable speed inverter compressor ac with 4-star BEE rating The indoor unit makes some noise
Filter clean indicator Ordinary design

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Best 1.5 Ton Inverter Split AC – Buying Guide

An air conditioner is an indispensable requirement for the summer season. While buying a 1.5-ton split AC many things should be considered as the room size, where do you live and the power consumption of the air conditioner. And once you make a list of all the requirement, it becomes easy to narrow down the air conditioners available in the market. Let us now focus on the important factors which will help you in deciding the best air conditioner for your needs.

Room Size

The air conditioner removes the heat from the room to cool it. The larger the room, the more will be the power consumption of the air conditioner. A 1.5-ton split AC or a 1.5-ton window ac is perfect for a middle size room which has an area of up to 180 sq feet. A 1-ton split ac or a 1-ton window ac is ideal for smaller rooms with an area of up to 120 sq. ft.


While choosing an air conditioner your location matters. For instance, the temperature of Delhi reaches around 50 degree Celsius during the summer season and therefore, a high ambient cooling air conditioner is required. And if you live in a place like Mumbai where the level of humidity is high, the dehumidifier feature is a must for the air conditioner. Based on the local weather condition, you need to have a look at the features that the air conditioners provide.

Power Consumption

The power consumption of the air conditioner depends on several factors like star rating, tonnage, and usage. The higher the number of stars, the lower will be the power consumption. If the tonnage is high, the power consumption will be high. And if you use the air conditioner more, the power consumption will be of course, high.

Aluminum Coil Vs. Copper Coil

The air conditioners use either the aluminum coil or the copper coil. Many people are confused about whether they should buy an aluminum coil or copper coil. The heat transfer coefficient of copper is higher than aluminum and therefore, it offers better heat exchange. Also, the copper coil is stronger than the aluminium coil. The copper coils offer better corrosion resistance, are easy to maintain, and are more durable as compared to aluminium coils. However, the aluminum is more malleable than the copper. And the aluminum coils are cheaper than the copper coil.

Extra Features

The extra features of the air conditioners make it easier to use it. The standard features which are commonly available in 1.5-ton inverter split AC are:

1. Anti-bacterial filter

This filter removes pollen, dust milts, and bacteria from the air. The filter ensures that you breathe in only healthy air and do not face any allergy issue. The anti-bacterial feature also makes sure that there are no bacterial deposits inside the air conditioner.

2. Dust filter

The dust filter filters the dust from the air. You can breathe clean air when you have a dust filter on the air conditioner.

3. Dehumidifier

With this feature, the air conditioner can sense the level of humidity inside the room, and it keeps the humidity level in control. This feature comes handy during the monsoon season.

4. Auto clean filter

The auto clean filter cleans the air conditioner automatically. The auto clean feature of the air conditioner block bacteria or mold. This feature increases the durability of the air conditioner.

5. Auto-detect

The auto-detect feature detects the optimum temperature for the room. With this feature, the air conditioner can sense the level of humidity and temperature in the room, and then it determines the optimal room temperature depending upon the body temperature.

You can find all these features in the best inverter AC in India.

Modes of Operation

Air Conditioners feature various modes which make it easy to get the desired temperature in your room. The most popular modes are listed below.

1. Cool Mode

It is the default mode of any air conditioner. This mode generally depends on the fan speed and the temperature. Ideally, the cool mode works great at 25 degrees Celsius. The efficiency is highest at this temperature.

2. Fan Mode

The compressor shuts down in the fan mode. This mode doesn’t cool the room and hence, conserve energy.

3. Dry Mode

It is the perfect mode to be used in humid weather. If the level of humidity is high, the dry mode ensures that it cools the room while removing the humidity.

4. Energy Saving Mode

This mode saves the energy as the compressor automatically is switched on and off depending upon the temperature inside the room. The compressor consumes the maximum electricity, and when it operates in intervals, plenty of energy is saved.

5. Quick Cool Mode

This mode instantly cools the room. If you want instant cooling, then this is the option for you. Please note that this mode consumes maximum energy.

6. Sleep Mode

The sleep mode of the air conditioner ensures that you have a good night sleep. It maintains a constant temperature, and when the room turns too cold, the air conditioner shuts down automatically.

Most of the best 1.5-ton inverter AC will have almost all the modes which are listed above.

Air Conditioning Refrigerants

Refrigerants or coolants are an important part of an air conditioner. The refrigerants present in the air conditioner absorbs the heat from the room and then release the heat outside the room. Once, the heat is eliminated from your room; it automatically cools down the room. Most of the refrigerant has high global warming and ozone depletion potential. However, the new air conditioners now use less harmful and more environment-friendly refrigerants. The R22 has a high global warming potential and has medium ozone depletion potential. The R 410A has the highest global warming potential, and the lowest global warming potential is found in R290 and R 600A. The R 410A, R 32, R 134A, R 290 and R 600A refrigerants have zero ozone depletion potential.

Initially, the AC all across the globe used the CFC as a refrigerant, but later researches showed that it contributed greatly towards the depletion of the ozone layer and hence, its use was discontinued. Currently, no longer any air conditioner uses this as a refrigerant. The HCFC or R22 is the most common refrigerant, but it is not environment-friendly. Therefore, the chances are high that this will be phased out during the coming years and therefore, do not buy air conditioners that use R22 as a coolant. The good 1.5-ton inverter AC will use an eco-friendly refrigerant.

Inverter AC – Concept, Working, and Benefits

The inverter AC is different from home inverters, and you shouldn’t be mixing both the things. The inverter AC works on Inverter Technology that saves a lot of power. In a regular air conditioner, the compressors always work at full capacity when it is switched on. After the optimum temperature is reached, the compressor switches off, and the fan continues to operate. And when the temperature rises beyond the threshold limit, the compressor again starts working at full capacity. In short, the compressor either works at full speed or doesn’t work at all.

However, it isn’t the case with the inverter ACs. In the inverter air conditioner, the compressor works at a variable speed. The compressor never works at zero speed, but it keeps on working on variable speed, and thus, it helps to reduce power consumption.

The benefits of inverter AC are that it reaches the comfortable zone quickly, it is more economical and it keeps the temperature comfortable all the time.

Inverter AC Vs Non-Inverter AC

The basic difference between inverter AC and non-inverter AC is that the inverter AC can run on variable speed and tonnage and the later runs at a constant speed and tonnage. The inverter AC adjusts the speed and tonnage based on the heat present inside the room, and the non-inverter AC doesn’t work that smartly. That’s what also makes the inverter AC more efficient. Also, the setting of the room keeps changing, and the inverter AC can sense that, and it works based on it.

Reciprocating vs. Rotary Compressors

Without a doubt, compressors are the most vital part of any air conditioner. The compressor compresses the refrigerant gas to such a high-pressure that it turns into a liquid. The liquid then passes through the condenser coil which extracts the heat from the liquid and releases it to the surrounding. The pressure is still high, and the expansion valve reduces this pressure and converts the liquid into a gas again where it passes through the evaporator coil. The evaporator coils then absorb heat from the room and consequently cools the room.

Let us now have a look at the two main types of compressors which are used in AC units. Both the compressors serve the same purpose which is to bring a gas inside a system and exhale exhaust and then repeat the cycle over and over again.

1. Reciprocating Compressor

The reciprocating compressors use pistons, cylinder, and valves to compress the refrigerant. The piston moves back and forth (reciprocates) in the cylinder. When the piston moves downward, the pressure in the cylinder is reduced to the extent that it creates a vacuum. The difference in the pressure forces the cylinder door to open, and this brings in the gas, and when the cylinder goes back up again, the pressure ends up increasing, and the gas moves out.

Pros Cons
Works well at high pressure The temperature of the air coming out is high
Easy to maintain Produces noise
Size of the compressor is bulky

2. Rotary Compressor

A Compressor which compresses the refrigerant gas by a rotating mechanism is known as a rotary compressor. The rotary compressor uses a roller connected directly to the shaft of the motor. This roller rotates within the shell of the compressor and rubs against the inside of the compression chamber to achieve the same goal.

Pros Cons
Ideal for offices, industries, and factories Initial cost is slightly higher
It produces less noise A minimum amount of usage per day/week is required
Compressor size is small
The exhaust air is not as hot as the reciprocating compressor

Star Ratings, EER, CoP, ISEER

For understanding the efficiency of the air conditioners, it is essential to understand a few terms like EER, Star Ratings, ISEER and CoP. Let us now have a look at these terms.

Star Ratings

The star ratings of AC are given by The Bureau of Energy Efficiency, Ministry of Power Government of India. When you see the star rating in combination with EER, you will come to know how efficient the air conditioner is. A 5-star AC will be more expensive than a 3-star AC; however, in the long run, the 5-star AC will prove to be the best choice because it saves energy consumption. Higher the star rating, lesser the energy consumption.


Energy Efficiency Ratio (EER) denotes the amount of heat which is removed per hour divided by the power consumption. In simple terms, an air conditioner with high EER will remove more heat per hour. It means higher the value of EER, higher the efficiency of the air conditioner.

CoP (Co-efficient of Performance)

The CoP is the amount of heat removed by the AC divided by power consumption and the unit for both the quantity is in Watts. And that’s why it doesn’t have any unit. High CoP indicates higher efficiency of the air conditioner.

Here is the relation between EER and CoP:
EER= 3.412 X. CoP


The temperature doesn’t remain the same throughout the year. With the change in temperature, one can also see a variation in the amount of cooling required. This is the basic concept of Seasonal Energy Efficiency Ratio (SEER). The same concept is followed by Indian Seasonal Energy Efficiency Ratio (ISEER). It is the ratio between the total annual amount of heat the AC can remove from the indoor when operated for cooling in the active mode to the total amount of energy that is consumed by the AC during the same period.

Now that you understand a different kind of values and rating available while purchasing an air conditioner, do not forget to check it to make sure that you are getting the best value for your money.

Best Inverter Air Conditioner - FAQs

When buying an air conditioner, of course, many questions will cross your mind. We have handpicked the frequently asked question to make sure that you go with a clear mind with the decision of buying the best air conditioner to suit your requirement.

The market is filled with plenty of air conditioner brands. It is a difficult task to choose the best AC brand when so many options are available. However, the most popular AC brands in India are Hitachi, Voltas, Carrier, LG, Daikin and Blue Star.

The service provided by a brand differs from one location to another. Therefore, before you buy an air conditioner, just check whether any servicing center of that particular brand is available or not in your city. Few reputed brands arrange with local service centers; you will come to know about it from the website of that particular brand.

Buying AC online from reputed websites like Amazon and Flipkart is safe. The best part is that you will be able to purchase air conditioners at a highly discounted rate online. The products are covered by manufacturer warranty. Also, payment is not a problem because these websites support all possible payment options. Just make sure you are buying from reputed online stores like Flipkart and Amazon. Spending some time in reading the user reviews on these sites will also give you an idea of the product quality and issues if any.

Initially, the aluminum condenser was used in the air conditioner, and therefore, of course, you can buy an AC with aluminum conditioner. However, you should note that an AC with the copper condenser is better because it has a high heat transfer coefficient and requires less maintenance. Aluminium condensers can’t be repaired easily and hence you need to change the complete condenser in case of any leak or damage. On the other hand, the Copper condenser can be easily repaired on-site. Copper condensers are more durable and the cost of maintenance is also very low as compared to aluminium condenser. An AC with copper condenser might cost more, but it is worth the price.

When it comes to air conditioning units, corrosion plays a huge role in decreasing the products’ durability. The Blue Fin/Gold Fin technology refers to the technology where the condenser is saved from corrosion. It is done by painting the condenser tube with anti-corrosive paint. It increases the durability of the air conditioner.

Just as the name suggests, the dual inverter is a doubly efficient inverter. It works twice as efficiently as a single inverter air conditioner. The dual inverter AC ensures the AC operates quietly and cools the room quickly. The dual inverter AC also helps to save money on electricity bills.

The stars refer to the BEE rating. Higher stars indicate that the power consumption will be less while the lower stars indicate that the power consumption will be more. Hence, a 5 star AC will consume less power than a 3 star AC.

Best 1.5 Ton Split AC – Final Verdict

When all the criteria are considered, the best 1.5 ton split AC comes out to be LG 1.5 Ton 5 Star Inverter Split AC. The Himalaya Cool Technology available in this AC is praised by many for its capacity to instantly cool down the room. One cannot ignore the fact that it is rated five stars and hence will consume less power. Apart from that, the AC uses environment-friendly refrigerant which gives it a huge nod. The air conditioner has been further made durable with the help of Ocean Black Protection and Gold Fin Condenser technology.

If you are looking forward to buying a budget-friendly air conditioner, then you can go for Voltas 1.5 Ton 3 Star Split AC. It is one of the most affordable 1.5-ton split air conditioners in India. If you have a very limited budget and are only going to use the AC for a few hours daily then this AC is a perfect buy for you.

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Buying Made Easy. Mr10 India