Are you looking to buy the best AC in India to cool your home this Summer!
If Yes, then you are at the right place 🙂
In this post, I am going to list down the Best 1.5 Ton Split Air Conditioners in India.
Normally, Summers starts in India from the Early March and Lasts Until July. Temperatures average around 30 – 46 Degrees during the Summer season.
In the Past Decade, Due to the Global Warming, Average Temperature has risen 0.8 Degree Celsius around the planet. Just Install an Air Conditioner at your Home, At least It can make your indoors cool.
Table of Contents
- Best Air Conditioners in India
- 1. LG 1.5-Ton 5-Star Inverter Split AC, MS-Q18YNZA 2021 Model
- 2. Blue Star 1.5-ton 5-Star Inverter Split AC, IC518DBTU
- 3. Carrier 1.5-ton 3-Star Split AC, CAS18ES3R30F0
- 4. Hitachi 1.5-ton 5-Star Inverter Split AC, RSOG518HDEA
- 5. LG 1.5-ton 3-Star Inverter Split AC, LS-Q18PNXA 2021 Model
- 6. Daikin 1.5 Ton 5-Star Inverter Split AC – FTKG50TV
- 7. Panasonic 1.5-ton 5-Star Wi-Fi Twin-Cool Inverter Split AC, CS/CU-XU18XKYF
- 8. Voltas 1.4-Ton 5-Star Inverter Adjustable Split AC, 175V ADJ
- 9. Sanyo 1.5-ton 5-star Inverter Split AC – 15T5SCIA
- 10. Whirlpool 1.5-ton 5-star Inverter Split AC, SAI18K50MXC0
- 11. Voltas 1.5 Ton 3-star Inverter Split AC – 183VCZJ
- 12. LG 1-Ton 5-Star Inverter Split AC, MS-Q12YNZA 2021
- 13. Daikin 0.8-ton 3 Star Split AC – Copper FTL28TV White
- Best AC in India – Buying Guide
- Working of the air conditioner
- Size of the AC – Select the right Tonnage
- Electricity consumption of the AC units:
- Inverter AC – Concept, Working, and Benefits
- Inverter AC vs Non-Inverter AC
- Copper Coil vs Aluminium Coil
- Reciprocating Vs Rotary Compressors
- Air conditioning Refrigerants
- Star Ratings, EER, CoP, ISEER
- Best Air Conditioner – Frequently Asked Questions
Best Air Conditioners in India
The List of the Best 1.5 Ton Split Air Conditioners is based on Star Rating, Power Consumption, Energy Efficiency Ratios, decibel levels, User Rating and Value for money 🙂
1. LG 1.5-Ton 5-Star Inverter Split AC, MS-Q18YNZA 2021 Model
If you are scouting for a high-quality air conditioner capable of saving maximum power, you need not look beyond LG 1.5-ton inverter split AC. This 5-star rated AC comes equipped with exciting features to ensure the highest degree of satisfaction.
LG air conditioners always offer something unique. This device provides 5-in-1 convertible cooling with the compressor working at different capacities ranging from 40% to 110% to deliver optimal cooling according to your cooling requirements.
This AC features a dual inverter compressor that allows for a wider rotational frequency to save more power while delivering higher-speed cooling. Thus, these appliances cool faster and last longer than other air conditioners in their niche.
The Auto-Clean feature does not allow bacterial and fungal accumulation to keep the heat exchanger dry and clean. LG’s DualCool Inverter keeps the interiors cool, even if the temperature outside exceeds 50 degrees Celsius.
2. Blue Star 1.5-ton 5-Star Inverter Split AC, IC518DBTU
Along with Voltas, Blue Star is one of the indigenous manufacturers of air conditioning equipment in India. These ACs come with stellar qualities to qualify as the most desirable home appliances in every Indian household.
Blue Star ACs come with Precision Cooling Technology that works on a unique Fuzzy Logic and ultra-wide frequency microprocessor-based controller. It enables the AC to vary the operating frequency intelligently and ensure precise temperature control and prevent indoor temperature fluctuations.
The classic remote comes with an inbuilt sensor that ensures the desired comfort around you whenever you activate this feature. These air conditioners have an aesthetic appearance with a hidden light-up display that looks attractive at night. It introduces a touch of class to your household ambiance.
The high-quality dust filter eliminates dust particles and other allergens from circulating inside your room. It traps these minute pollutants to ensure the circulation of fresh air inside your rooms.
3. Carrier 1.5-ton 3-Star Split AC, CAS18ES3R30F0
Carrier can rightfully claim the distinction of being the ‘Father of Cool’ because this company was responsible for inventing the air conditioner back in 1902. Since then, the technology has come a long way, with today’s ACs coming with state-of-the-art features.
Though this Carrier AC does not feature an inverter compressor, it delivers optimal cooling performances. Hence, it is one of the most desired AC models in the Indian market today.
The Dual Filtration feature is an outstanding highlight of this AC. It comes equipped with an HD filter and PM2.5 filters to ensure pure air circulation inside the house.
The copper condenser coils are advantageous because of their inherent benefits over other metals like aluminum or other alloys. Copper has higher heat transfer efficiency and better durability compared to aluminum. It is also easy to maintain and repair. Thus, it provides more value for money despite being expensive than aluminum.
4. Hitachi 1.5-ton 5-Star Inverter Split AC, RSOG518HDEA
Hitachi brings the best of Japanese technology to your bedroom in your ACs. It comes equipped with outstanding features that endear it to Indian households and enhance its overall popularity.
This Hitachi AC’s highlight is its expandable inverter compressor that expands its capacity depending on your cooling requirements. It performs beyond its rated capacity in adverse temperature conditions, whereas it cuts down humidity levels in the rainy season to offer maximum comfort.
The Frost Wash technology and the Auto Filter Clean technology enhance your comfort and convenience levels considerably.
This AC comes with a Filter Clean Indicator feature that alerts you to clean the filter regularly and prevent dust buildup. Thus, it enhances the cooling performance.
5. LG 1.5-ton 3-Star Inverter Split AC, LS-Q18PNXA 2021 Model
LG ACs are unique because they come with exceptional features like 4-in-1 convertible cooling. This technology allows you to select the ideal cooling capacity between 40% and 100%, depending on your requirements.
The dual inverter compressor system is better at energy savings because it rotates at variable frequencies to deliver high-speed cooling and save energy simultaneously. Besides, these compressors make minimal noise.
Ocean Black Fin protection is available against dust, smoke, and chemicals present in the environment. It also provides resistance to corrosion and UV rays.
Other excellent features include the provision of an EZ Clean filter to eliminate bacterial and fungal contamination. This filter can trap pollutants as small as 10 microns to ensure pure air circulation.
6. Daikin 1.5 Ton 5-Star Inverter Split AC – FTKG50TV
Daikin is one of the best ACs available in India today. One of the highlights of Daikin is the excellent after-sales services they provide. Besides, Daikin AC comes with some of the best features.
Daikin AC works on the Neo Swing Compressor technology. Due to the smooth rotation, there is minimum friction and vibration. Therefore, this AC is one of the most silent performers. Besides, it also prevents the leakage of refrigerants during the compression process.
The Daikin AC comes with an Econo Mode or the Power Saving Mode. This mode is useful as it limits the maximum power consumption.
The presence of the in-built stabiliser is a boon, as it can handle a tremendous range of input voltage fluctuations. There is no need to have an external stabiliser, thereby saving on additional expenses.
7. Panasonic 1.5-ton 5-Star Wi-Fi Twin-Cool Inverter Split AC, CS/CU-XU18XKYF
Panasonic takes air conditioning technology to the next level with its Wi-Fi-enabled features that redefine connectivity, comfort, and convenience. The excellent features available on this AC make it a cherished model to have in your home.
In this age of smart devices, having a smart AC is an absolute bonus. This Panasonic AC comes equipped with Wi-Fi connectivity to enable you to control its operations from virtually anywhere.
A crucial aspect of the MirAIe platform is its compatibility with voice assistants like Alexa and Google Assistant. Seamless and hands-free control makes this AC one of the ideal ones to have.
MirAIe platform offers a one-touch service request feature that enables storing of all annual maintenance contracts digitally. It ensures that consumers get notified if there is a change in the status.
Other excellent features include Smart Diagnosis that enables you to diagnose errors in time. Thus, you save on maintenance costs.
8. Voltas 1.4-Ton 5-Star Inverter Adjustable Split AC, 175V ADJ
Voltas is renowned for introducing innovations in AC technologies. This adjustable split AC is one such attempt to deliver excellent cooling performance with maximum power savings.
This Voltas AC is different from the others because it comes with an adjustable inverter compressor capable of running at different tonnage, depending on your cooling requirements.
This AC can run in both 1-ton and 1.4-ton, considering the ambient temperature or occupants’ number in your home.
The 4-way auto louver feature enables uniform air circulation throughout the room. The steady cool compressor optimizes power savings and maintains an ideal room temperature to give you complete peace of mind.
9. Sanyo 1.5-ton 5-star Inverter Split AC – 15T5SCIA
Sanyo is another Japanese model AC manufactured to suit Indian conditions. The company has a robust experience of producing some of the best consumer durables. This AC comes with fascinating features at a most affordable price, thereby qualifying as one of the best AC in India under Rs 35,000.
Sanyo comes with a rich legacy of nearly seven decades, and along with this experience comes some of the latest technology in AC manufacturing. All the ACs in this series come with inverter technology, dust filters, PM2.5 filters, and a host of other excellent features.
The dual cool inverter technology functions on two independent rotors in the compressor to ensure quicker and energy-efficient cooling. Thus, you get high comfort while running up lower energy bills at the same time.
Sanyo AC comes with a self-diagnosis feature where it displays error codes on the temperature display feature to enable easy troubleshooting.
The Sleep Function adjusts the temperature accordingly to provide you with comfortable sleep throughout the night. This AC is an environmentally-friendly appliance as it uses R32 refrigerant to ensure zero damage to the ozone layer.
Other exciting aspects include the hidden temperature display, the timer function, and a high ISEER rating.
10. Whirlpool 1.5-ton 5-star Inverter Split AC, SAI18K50MXC0
Usually, one connects Whirlpool with washing machines. However, the company has forayed into the AC manufacturing space, as well. One can expect the same degree of professionalism in this area of operations.
Whirlpool washing machines are renowned for performing under the most adverse of circumstances. One can expect the company to bring in this level of excellence to their AC brands.
This AC comes with 6th Sense FastCool Technology to ensure quick and uniform cooling in the room.
The AC unit features an in-built stabiliser that can withstand voltage fluctuations in the range of 145 to 290 volts. The self-diagnosis feature helps to detect the errors and display them on the temperature panel, thereby making it easy for carrying out repairs.
The sleep function allows setting a time for the air-conditioner to adjust to your sleeping conditions. The objective is to enable a peaceful sleeping experience.
11. Voltas 1.5 Ton 3-star Inverter Split AC – 183VCZJ
Voltas is one of the earliest manufacturers of AC units in India. Years of experience has taught them to design the best ACs for Indian conditions. This unit comes with all the features necessary for delivering high-quality performance.
The DC inverter technology at work ensures to deliver high-quality performance. This technology reduces power consumption to the minimum by maintaining an ideal temperature without switching off the compressor.
The high-ambient cooling feature of this AC keeps you comfortable even if the temperature outside exceeds 52 degrees Centigrade.
This AC comes with 4-way auto louvres to deliver fresh air uniformly across the room.
The Steady Cool Compressor optimises power consumption while ensuring the maintenance of ideal room temperature, thereby providing complete peace of mind.
12. LG 1-Ton 5-Star Inverter Split AC, MS-Q12YNZA 2021
This LG 1-ton 5-star split AC comes up trumps compared to its peers on the performance and energy-saving fronts.
The dual inverter compressors are better than conventional motors because they rotate at varying speeds depending on your preferences. Thus, these inverter compressors deliver better cooling performances while saving power. Besides, these machines last longer and run quieter.
The stand-out feature of these LG ACs is the 4-in-1 convertible function. It is a perfect example of catering to your individual preferences. This AC works at four different capacities ranging from 40% to 100% to offer optimum cooling and power savings.
This refrigerator works on the eco-friendly refrigerant R32. This coolant is better than its immediate competitor R410A because of its lower GWP and zero-ozone depletion potential.
All LG ACs feature a smart diagnosis feature that helps them diagnose errors and communicate with the LG service center personnel to ensure quick repairs. The low gas detection feature proves handy for timely maintenance.
Other excellent features include stabilizer-free operations that make the unit function in a varied input voltage range of 120V to 290V. The Auto Clean feature keeps your heat exchanger dry and clean, thereby discouraging bacterial and mold accumulation.
13. Daikin 0.8-ton 3 Star Split AC – Copper FTL28TV White
If you feel that maintenance costs can push the economics beyond your reach, you should opt for the Daikin AC, as it requires the least maintenance amongst all its peers.
The USP of Daikin ACs is its Power Chill Operation that empowers you to make your AC function at maximum speed with a single click of the remote. It comes handy on hot and sultry days when you need instant cooling the moment you switch on the AC.
The Coanda Airflow feature ensures uniform cooling of the entire room by distributing the airflow to every corner of the room. A single click on your remote allows this feature.
Daikin ACs are amongst the safest of the lot because the outdoor power supply in these machines is designed to protect the appliance and the occupants in the house from unfortunate fire accidents.
Daikin AC is a robust appliance as it comes equipped with 100% copper coils to ensure better heat dissipation. On the appearance front, the Daikin ACs rank at the top because of the high-impact Polystyrene material for the indoor units. It enables the internal units to maintain its colour and look new all the time.
Best AC in India – Buying Guide
What is the difference between a computer and an air conditioner? A computer requires ‘Windows’ to be open for effective functioning whereas the AC needs the windows to be shut 🙂
Having begun on a lighter note, we shall dig deep and look at the various aspects that you should understand while installing air conditioners in your homes and offices.
Working of the air conditioner
There are two explanations for the working of the air conditioner. One is the scientific explanation whereas the other one is a simpler one that could be understood by all. We shall begin with the simpler one.
Heat and cold are synonymous with each other. The absence of heat is cold and vice versa. The AC works on a similar principle. It removes the heat from inside the rooms. Thus, you experience the rooms getting cooler.
Does this not bust one of the biggest myths that air conditioners generate cooling? No, they do not do that. They eliminate the heat thereby cooling the rooms
We now come to the scientific explanation of how Ac units work. Basically, the air conditioner works on the three principles of evaporation, condensation, and compression. We shall look into these processes in brief to get a fair idea.
You have different kinds of AC units. In a single-unit window AC, the compressor, condenser, and the evaporator are located in a single unit. In case of a split AC unit, you have the compressor and the condenser situated in the outdoor unit whereas the indoor unit comprises of the evaporator coils.
Size of the AC – Select the right Tonnage
Various factors go into the selection of the right size of the AC. Let us look at all of them in brief.
What is the concept of tonnage of the AC?
As you browse your way through the AC units in the market, you find the air conditioners of different tonnage such as 1-ton, 1.5-ton, 2-ton, and so on.
What does this imply?
The tonnage is the amount of heat the air conditioner removes from the room in one hour. The mathematical unit for tonnage is BTU (British Thermal Units). 1 ton equals 12000 BTU. Higher the BTU, the greater is the cooling effect.
We have just seen that the size/tonnage of the AC depends on various factors. You can also add a couple of other relative factors such as a number of occupants in the room, the amount of furniture/appliances in the room, etc.
Electricity consumption of the AC units:
How much electricity does an air conditioning unit consume? This is a common question on the minds of all AC buyers. It again depends on various factors like the tonnage, star rating, and usage of the AC and so on. Let us look at some of the principal aspects in brief.
Modes of operation of the AC units
There are various modes in which you can use the AC. The consumption of electricity depends on the mode of operation of the AC.
This is usually the default mode in any AC. It depends on the temperature and the fan speed setting. Ideally, you should keep the temperature set at 25 degrees Centigrade. This is the most comfortable temperature to ensure maximum efficiency.
In this mode, the compressor remains off. You save energy in the process but it does not result in the cooling of the room. A ceiling fan can do a better job.
This is the ideal mode to use in a humid climatic condition like the type you experience in places near the sea. The purpose of using this mode is that it removes the humidity from the air thereby cooling the room automatically. The fan runs at lower speeds and the compressor for shorter duration in larger cycles. The principal objective is to remove the humidity and not cool the room as such.
Energy Power saver mode
In this mode, the compressor shuts down when the temperature of the air reaches the level set in the thermostat. The fan keeps running to maintain the coolness. When the temperature exceeds a certain level, the compressor starts functioning again. The compressor is the largest consumer of electricity. As it oscillates between the on and the off position, it consumes less electricity.
Quick cool mode
Strictly speaking, this is not an electricity-saving option. But, you have this feature in many Ac units where the AC starts functioning at a set temperature of 16 or 18 degrees Centigrade as against the 25 degrees in the normal mode.
This is a special mode by which the AC increases the temperature of the thermostat by 1 degree every hour until it increases the temperature by 2 degrees. At night, the exterior is already cooler. Hence, this facility ensures that your AC consumes less electricity.
6th Sense cooling
This mode is available only in the Whirlpool AC units where the technology adjusts the fan speed depending on the temperature inside the room. This is better than the cool mode.
You have just seen the various working modes of an AC. Choosing the right mode for your AC can go a long way in reducing your electricity consumption.
We shall also look at some other aspects that affect electricity consumption.
Size of the Room
The principal job of the air conditioner is to remove the heat from the room thereby making it cool. Hence, a lot depends on the size of the room. Understand that the electricity consumption of an AC unit depends on the amount of heat present in the room.
A 1.5-ton AC in a room measuring 120 sq feet will work differently as compared to the same AC in a room measuring 150 sq feet. This is because of the greater volume of hot air.
Some places in India like Delhi or Nagpur become very hot in the summer months. However, the climate remains dry. On the other hand, places like Mumbai and Chennai experience a great deal of humidity.
It might not be hot but the humidity can be a draining experience. Your AC will work differently under both circumstances.
The former case requires the AC to cool down the rooms whereas the principal job of the AC in the latter instance is to remove the humidity. Thus, an AC with a larger size and tonnage is perfect for the hot places whereas a smaller AC unit would suffice to remove the humidity.
This is a surprising factor, but colours do affect the performance of the AC. Darker colours absorb more heat. Hence, they take a longer time to cool. Hence, it is always better to have lighter coloured walls and curtains.
Number of people
The more the number of people in the room, the higher is the emission of heat from the bodies. Hence, you experience that you require AC units of higher tonnage to cool rooms having a higher number of people.
A 150 sq feet room in your house can work with a 1.5-ton AC whereas the room of the same size will need two 2-ton ACs in case you run a coaching class/school with say 20 to 25 kids in the room.
Just as people emit heat, so also do electrical and electronic appliances. The simple appliances like bulbs emit heat. Hence, it is beneficial to have LED lights in your room. They not only save electricity but also emit less heat.
Having a lot of furniture in the room can also increase the electrical consumption of the AC. It is better to keep your cupboards and shelves closed in an AC room. The walls absorb heat as well. Hence, insulating the walls can also help in reducing electrical consumption.
Inverter AC – Concept, Working, and Benefits
The most common term doing the rounds today is ‘Inverter AC’. What is an inverter AC? If you think that this is an AC unit that can work on the home inverters, I am afraid, you are sadly mistaken.
The home inverters have nothing to do with inverter AC. These AC units work on the Inverter Technology whereby they save a lot of power.
This is not the case with inverter ACs. These compressors work at variable speeds. In this technology, the compressor never switches off. It is always on. But, it runs at varying speeds thereby drawing less power.
It is more or less like the functioning of the accelerator in a car. As you increase the speed, you press on the accelerator. In case you want to slow down, removing the foot from the accelerator pedal is enough. The vehicle starts cruising without consuming any fuel. Thus, inverter technology is a power-saving feature available only in the split AC models.
The benefit of using inverter AC units is that they are highly energy efficient. A 3-star inverter AC is equivalent to the 5-star normal split AC. This explains the efficiency of the inverter AC vis-à-vis the non-inverter ACs.
Inverter AC vs Non-Inverter AC
We shall see the difference between the efficiency of an inverter AC and the non-inverter AC.
The basic difference between the inverter AC and the non-inverter AC is that the former is capable of running at variable speed and variable tonnage. The non-inverter AC units run at a constant speed and tonnage.
Inverter AC units are capable of adjusting their speed and tonnage according to the heat inside the room. The non-inverter AC units do not have this capacity.
Efficiency wise, inverter AC units are 7% more efficient than their counterparts in the same star rating category.
Do you have the ideal setting in your room at all times? No, the numbers of people vary and so does the temperature levels. Hence, you need an AC unit that is capable of adjusting to the ambience in the room. The inverter AC units are capable in this regard.
We reproduce the BEE data of 2018 about power consumption of various AC units if different tonnage and ratings. This data assumes total consumption for 1600 hours.
This table shows that higher the star rating, the lower is the consumption. It also indicates that the inverter AC units are extremely energy efficient.
Copper Coil vs Aluminium Coil
We shall throw some light on the various aspects of choosing the right kind of coils for your AC.
Copper has a higher heat transfer coefficient than aluminium. Hence, it proves to be a better heat exchanger than aluminium
Aluminium is cheaper than copper. Therefore AC units with aluminium coils are cheaper.
Aluminium is more malleable than copper. Hence, it is possible to mould aluminium into any desired shape more easily than copper. Thus, aluminium is the preferred choice for making AC coils.
Now, copper is undoubtedly stronger than aluminium. Cooper coils have the reputation of lasting much longer than aluminium coils. They need fewer repairs as well.
You notice that the condenser coils are always placed in the external units. Hence, they are subject to the vagaries of weather. Copper coils are easier to maintain whereas you need to keep the aluminium coils in heavy-duty cabinets thereby making them difficult to maintain.
The AC works in a damp environment at all times. Hence, there is always a danger of corrosion. This corrosion results in the formation of a layer over the coils thereby affecting its conductivity. People living in humid areas near the sea should be extremely cautious about this aspect.
Blue Fin Condenser Technology
On the subject of corrosion, one must add that there are technologies available today that work towards reducing corrosion. One such technology is Blue Fin Condenser. In this technology, they paint these coils with anti-corrosive materials thereby increasing the overall life of the AC units.
Microchannel condenser coils
In fact, you find the microchannel condenser coils to be aluminium coils. They are flat aluminium tubes having minute holes in them through which the refrigerant flows. Since the entire set up is of a single metal, aluminium, there is no question of galvanic corrosion.
Hence, these coils are a good option for ACs working in coastal regions. Samsung uses this technology in its AC and calls it the MultiJet technology.
Reciprocating Vs Rotary Compressors
You have seen the difference between aluminium and copper coils. Now we shall shirt our attention towards compressors. Let us now look at the difference between the reciprocating and rotary compressors.
Anyone will say that the compressor is the most important component of any AC unit. In fact, it is the heart of the unit. Hence, one should have knowledge of how compressors work. Let us see the role of the compressor in an AC.
There are two major types of compressors in use in the AC units.
Reciprocating compressor – This is similar to the engine of the automobile that works on the concept of the cylinder and piston. The piston works in a back and forth motion resulting in compression and release of the gas.
Rotary compressor – This arrangement consists of a number of rotors having very little clearance between them. These rotors rotate in opposite directions whereby the air passing through them emerges at a higher pressure.
Let us look at the pros and cons of the reciprocating and rotary compressors to understand which of the technologies is better.
Reciprocating Compressors Pros
- Easy to maintain
- Capable of working at higher pressures
Reciprocating Compressors Cons
- Produces a lot of noise
- The air comes out at a high temperature
Rotary Compressors Pros
- Good for large offices and industries
- Less noise
- Air comes out at a lower temperature
Rotary Compressors Cons
- Expensive as compared to reciprocating compressors
- Higher usage is required for optimum working
One can conclude from the above pros and cons that the reciprocating compressors are perfect for homes and small offices. The rotary compressors are ideal for heavy-duty uses such as in offices and industries.
Air conditioning Refrigerants
Normally, when you find that the AC does not deliver enough cooling, the mechanic suggests that you replace the coolant. What exactly is this coolant or the gas as they call it in many parts of the world?
|Refrigerant||Global Warming Poetential||Ozone Depletion Potential|
Various types of refrigerants have been in use over the years. They are as follows.
Chlorofluorocarbons – CFC
These were the initial coolants used in AC units all around the world. They were also known as R12 refrigerants. They were effective, but they played a great role in the depletion of the ozone layer in the atmosphere. This led to the discontinuance of the manufacture of this R12 refrigerant. Now, no AC uses this coolant anywhere in the world.
Hydrochlorofluorocarbons – HCFC
Environmental concerns led to the replacement of the CFCs by the HCFCs. This refrigerant, popularly known as R22 is the most common coolant used in AC units in India today. However, this coolant is also not very environmentally friendly. Hence, there are indications that these coolants will be phased out over the next 4 to 5 years.
This is why you should be very careful while choosing your AC. If the manual indicates the use of R22 as the coolant, it is advisable not to buy that AC because it is an out-dated one. This is in spite of the fact that the majority of AC units use this coolant in India.
Hydrofluorocarbons – HFC
Compared to the R22 coolant, the HFCs do not deplete the ozone layer. Hence, they are comparatively environmentally friendly. You have three types of HFCs in use today (R410A, R32, and R134). The world has moved ahead and switched over to a more environmentally friendly refrigerant, the hydrocarbons. India is also close on the heels of these developing nations and has plans to phase out the hydrofluorocarbons in the coming years.
Hydrocarbons – HC
The search for the most environmentally friendly coolant has brought the world to HCs. AC manufacturing companies all over the world today use R290 (Propane) and R600A (Iso-Butane) as refrigerants. They are reputed to have zero effect on the ozone layer. Hence, they are also referred to as green refrigerants.
The inverter AC uses such types of coolants in them. Research is still on in this field to discover the best environmentally friendly coolant. Until the time they come up with a better coolant, the R290 and R600A will have a field day.
One should have awareness about these minute factors while deciding to purchase AC units for your house. Every person in the world has a duty towards maintaining the sanctity of the environment. You need to leave a better world for your children to live in. Small things such as choosing the right coolant for your AC and refrigerator can play a big part in this endeavour.
Star Ratings, EER, CoP, ISEER
Let us now look at the factors affecting the efficiency of the AC units and the concept of star ratings.
Energy Efficiency Ratio: (EER)
Co-efficient of Performance: (CoP)
Whenever you venture to buy an AC, the first thing you normally look out for the star ratings. What exactly are the star ratings?
The Bureau of Energy Efficiency, Department of Energy Savings Government of India prescribes these star ratings for various electronic products. A lot of factors go into the formulation process.
These ratings are fixed for specific periods. The latest star ratings released by BEE are from January 01, 2018, to December 31, 2023.
Indian Seasonal Energy Efficiency Ratio
January 01, 2018, to December 31, 2020
January 01, 2021, to December 31, 2023
This table suggests that you should look at the star ratings along with the EER. It is mandatory on the part of AC manufacturers to include the EER on the star rating sticker.
Understand that the 5-star AC is always going to be more expensive than the 4-star AC. However, you do save a lot in energy consumption over a long period.
There are other aspects to look into while we are on the topic of energy savings. They include the SEER, ISEER, and other terms concerned with the performance of the AC such as CSTL and CSEC. We shall look at all these terms in brief for the sake of better understanding of the subject.
Now, we come to the concept of ISEER.
ISEER = CSTL/CSEC (Total amount of heat removed to the total amount of energy consumed)
The BEE makes it mandatory for Indian AC manufacturers to declare the ISEER on the star rating label.
EER is an internationally approved concept.
ISEER is only for Indian seasonal conditions.
EER applies to non-inverter air conditioners.
ISEER applies to inverter air conditioners
EER is independent of seasonal changes.
ISEER depends on the seasonal temperature changes.
EER remains the same globally.
ISEER depends on Indian temperature changes.
Compared to ISEER, EER is less accurate.
ISEER is highly accurate compared to EER.
While on the subject of star ratings, you should be aware of certain terms and concepts regarding your AC units. You will come across these terms frequently. It is better to be aware of the same and ask questions to the dealer before deciding on the type of AC you wish to buy for your home.
Rated Cooling Capacity
The rated cooling capacity of an AC is ‘a ton’. This is equal to 12000 BTU per hour.
Maximum Cooling Capacity
The maximum cooling capacity is again measured in tons. For example, a 2-ton AC will remove 24000 BTU of heat per hour from the room. The requirement for the room can vary depending on various factors discussed earlier. It is advisable not to oversize the AC because it can affect the performance of the AC.
Rated Power Input
You find this figure on the star rating label. It is mandatory on the part of AC manufacturers to include this figure. This is equivalent to the power consumption in Watts when the AC runs at 100% load. A 1.5-ton AC will consume about 1500 w/hr. Hence, you can see that the AC will consume around 1.5 to 2 units per hour.
However, if you use the AC continuously for say 5 hours, the consumption is not 1.5 or 2 times 5. This is because the compressor switches off and on at regular intervals. Therefore, the consumption of 5 hours will definitely be less.
Half Power Input
By applying the above concept, the half power input is the power consumption in Watts when the AC runs at 50% of the load.
Maximum Power Input
This is the power consumptions when the AC runs at its maximum tonnage capacity. This figure will differ from the Rated Power Input because of the tolerance of + or – 5% allowed by the BEE. Even a 1.2 ton AC is marketed as 1 ton.
Now, you have seen the various factors that affect the electricity consumption of the air conditioning units.
Best Air Conditioner – Frequently Asked Questions
There are innumerable AC brands available on the market. It is a tough task to choose the best among them. This guide will give you an idea of the aspects you have to look into while buying AC units. Energy efficiency is one. Environmental friendliness is another.
You have to look at the cost factor as well. Considering all the three major aspects, it is always better to go for inverter AC units. You have various companies that are specialists in the manufacture of AC equipment. The first names that come to mind are Carrier, Blue Star, Daikin, etc. Secondly, you have companies that manufacture various electronic appliances other than AC units.
The most prominent among them are Hitachi, Mitsubishi, LG, Voltas, etc. You have the local India brands like Onida and Godrej that manufacture ACs to suit Indian conditions. All these brands are reputed brands. You can go for the one that offers the maximum benefits at the minimum cost.
It is better to check out beforehand as to whether the AC manufacturing company has provisions for servicing your AC in your city. Transporting it to another city is not a feasible job. Usually, the reputed manufacturers like Carrier and Daikin have arrangements with local service centres.
The Indian make AC units do not face this problem. It is better to read customer reviews before going for the right AC brand. The reputed AC brands mentioned above have such facilities. Nevertheless, check it out before you invest in the particular brand.
Yes, it is. You have reputed websites like Amazon where you can order the best AC units at great discounted rates. There is absolutely no harm in buying AC units online, especially from the reputed eCommerce platforms.
The most common metals used for manufacturing condenser tubes are copper and aluminium. Both these metals have their advantages and disadvantages. Copper has a high heat transfer coefficient as compared to aluminium. At the same time, aluminium is extremely malleable and comparatively inexpensive.
But, they require higher maintenance. Therefore, you can opt for AC with aluminium condensers though copper is the preferred choice all over the world. Aluminium condensers are not bad either.
Corrosion is the biggest enemy of these air conditioning units. Over a period, the condenser tubes suffer from corrosion thereby requiring replacement and repairs.
To overcome this problem, manufacturers use Blue Fin or Gold Fin technology whereby they paint the condenser tubes with special anti-corrosive paint. This improves the life of the AC unit. The only difference between Blue Fin and Gold Fin technology is that Gold Fin technology does not rust easily thereby increasing the life expectancy of the AC.
However, this technology is expensive as compared to Blue Fin. Both these technologies have their merits and demerits. It is up to the consumer to make the choice after considering all aspects.
Every AC has a voltage operating limit. You will find this range printed on the AC label. Check out if the area you live in has voltage fluctuations beyond these limits.
In case, it is so, you should invest in a stabilizer for your AC to protect it from voltage fluctuations. It is better to be safe than to be sorry. A stabilizer will not cost much when compared to your AC. Install one and do not worry about voltage fluctuations.
Corrosion is the main problem that condensers face. Copper is an excellent metal for manufacturing condenser coils. But, copper is also unique for being the only metal to fall prey to formicary corrosion. This type of corrosion requires the presence of oxygen, water, copper, and an organic acid.
The worst part of this corrosion is that it is invisible to the naked eye. You find this type of corrosion in coastal areas where there is a lot of humidity in the environment. Usually, you see AC units having copper coils and aluminium fins. Such units suffer from galvanic corrosion. Hence, it is better to have a single metal for the condenser tubes as well as the fins.
The microchannel condenser coils are the best for use in coastal regions. Samsung uses this technology in the manufacture of condenser coils. The major AC manufacturers use Blue Fin and Gold Fin technology for coating the condenser coils.
Indoor air has a lot of dust. This dust and bacteria can cause respiratory problems. In the normal circumstances when you do not use the AC, you keep the doors and windows of the room open. This ensures circulation of the air. But, when you operate the AC, you have to close the windows and doors. This entails that you inhale the same air.
The AC units have dust and bacterial filters that trap these ingredients from recirculation. The modern-day AC units come with air purifiers as well. This ensures that you have pure and clean air to breathe. You will understand the amount of dust in the air when you remove these filters from the AC for cleaning. Imagine the amount of dust you inhale in the normal course.
In the normal course, the air contains a lot of humidity. Running the AC in normal mode entails that you circulate the humidified air through the machine. This is why you have the dehumidifier mode in the AC.
This is also known as a Dry mode where the AC removes the excess humidity from the room without any significant change in the temperature. Hence, people living in areas near the coast should go for ACs with dehumidifiers. They add to the comfort value of the AC.
You find this Dual inverter compressor in certain brands of LC AC units. The very name suggests that you have double the efficiency that you experience in a single inverter AC.
This technology ensures that the AC functions with less noise and cools faster as well. When it cools faster, it entails that the compressors function at low speeds most of the time. Hence, you save a lot in your electricity consumption
The Mosquito Away technology is present in the latest brand of LG AC units. This technology is based on ultrasonic sound to keep away mosquitoes. The AC units emit this sound that is beyond the hearing power of humans.
But, it can discourage mosquitoes. LG uses this technology in their phones, washing machines, and televisions as well.
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