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8 features to look for in your new ac

27 Jan 2020

The world of Air Conditioning buying guide technology is advancing by the hour. With the latest and more attractive features being endorsed by competitive brands, they sure have caught our eye by compare ac online

If you are looking to best ac for home or want to keep abreast with the latest development in the AC technology world, here are the top 8 new technologies in air conditioners;

1. Digital Inverter Compressor

Digital inverter technology is one of the most important innovations of AC technology. To provide better efficiency, the leading brands have started using the dual inverter technology. It gives an increased operating frequency range which enables to increase the efficiency of cooling inside the rooms.

The inverters come with advanced BLDC motors (Brush-Less Direct-Current motors) which help to maintain the desired temperature with minimal power fluctuations. Other concepts help the inverter to optimize its peak performance even in the extreme temperatures, helping in achieving the perfect cooling for the room and maximize energy saving.

2. Sensor network for smart cooling

This feature comes with different names like ‘follow me’, ‘iSee” technology, ‘Smart Human sensor’ etc. It detects the number of people inside the room as well as recognizes human absence to optimally cool the room.

Another feature allows the sensor to be placed inside the remote that controls the cooling in accordance to the information received from the remote sensor.

3. Pollution Control

Since the pollution levels have tremendously increased, the manufacturers recognize the importance of air filtration for a healthy lifestyle of the consumer. The PM 2.5 and VOCs are two major hazardous elements which affect the health of the consumer.

The best ac for home unit creates a bio climate inside the room which prevents the ions of hydrogen and oxygen to mix up with harmful bacteria and other airborne agents. Also available are some models of air conditioner with air purifying filters. In an aim to give out non polluted air, some ACs also use multiple stages of filtration through which the cooled air is passed, doubling as air purifiers.

4. Humidity Control

During the rainy season conventional air conditioners not only consume more energy but also make the room uncomfortably cold which leads to health ailments like common cold, severe headache etc.

The AC manufacturers have found out a way from the above mentioned problems with features like Dehumidification, Auto Humid Control or dry mode, which make sure that the air conditioner detects the high humidity outside the room; thus enabling them to deliver dry clean and fresh air without any stickiness even in the most humid regions.

5. Auto Clean

Filters are an important component of the ACs and if ignored, it could drastically reduce the cooling capacity. But the manufacturers have designed a solution for this pestering problem. With features like iClean or Blowclean mode the manufacturers have dedicated a dust box which collects the dust particles swept by the brush or blown by the blower.

The cleaning barely takes 5 to 7 minutes to complete and once it is completed, the brush or the blower comes back to its original position providing the user a hassle free cooling experience.

6. Controlling AC via Wi-Fi and smartphones

Many AC manufacturers have developed apps to control the AC using a smartphone. These apps come with features like Wi-Fi Connect technology and Wi-Fi Direct functionality. Connect the AC with the Wi-Fi router and you can easily control the AC from anywhere, including from outside the home.

This can be particularly useful if you wish to have a cooled room ready for you when you are back home after a long workday. Some apps would also give the estimated power usage of the AC and other details, differing in models from brand to brand.

7. 4D Airflow

There was a time of conventional ACs with 2-way cooling system. The AC manufacturers introduced functions like the 4D swing function and the Coanda airflow.

These features enable the cool air to blow in multiple directions in the room to ensure thorough cooling, also spreading the air flow in a way that it does not directly hit the people in the room with the help of a bigger fan. As a result, every corner in the room is nearly as cool as the area in front of the AC blade.

8. Fast Cooling technology

With a lot of buzz around the ‘fast technology’, manufacturers have adopted various methods and techniques to cool the room as quickly as possible. The features vary from different brands and come with the names such as Hcool, PowerChill and 3D cool extreme.

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This technology helps bring down the room temperature to a comfortably cool level in a matter of minutes without compromising on the energy saving aspect.

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Does energy star rating really matter in Air Conditioners

10 Feb 2020

Have you noticed the star ratings on the body of your appliances? Which a higher rated and higher costing AC should be preferred? Read to know more.

What is Energy star rating?

Star rating is a universal factor used to determine the energy efficiency of any electrical appliance. It ranges from 1 star to 5 stars with 5 stars being the highest. Higher the rating of the product, more energy efficient it will be, resulting in cheaper electricity bill. But naturally, a unit with higher rating of the same tonnage of the same is more expensive than the one with lesser stars.

The star ratings are provided by the Bureau of Energy Efficiency (BEE). It is determined by a ratio called the Energy Efficiency Ratio (EER) which is the ratio of the cooling capacity of an AC.

The BEE frequently revises the ratings for better and up to date ratings. Furthermore, the ratings also show how eco friendly the air conditioner is, a 5-Star rated air conditioner will release lesser amounts of CFCs and gases in the environment as compared to a less rated air conditioner.

Which star rating to choose?

AC with a 5 star rating will cool the same room more efficiently as compared to an AC with a lower rating. It will also consume less power and energy which will result in a cheaper electricity bill. But a 5 star AC will also cost much more than a 1 star AC, therefore only energy efficiency can not be the sole factor to determine which star rated AC to buy.

Factors such as the amount of electricity units used, season of use and time of use also play a major role in selecting the correct AC. If the appliance is to be used every day and continuously during the season then it’s advisable to choose the 5 star AC, since the operating cost of the AC will be much less than a lower rated AC.

The difference in the initial purchase cost can easily be recovered in a matter of few years. Whereas if the usage of the AC is not much then the user can even go for a 1 star AC, since the basic cost will be cheaper and it comparatively will be used for much less hours during the year.

Final Word

Since everything comes with a cost, a 5 star air conditioner will naturally be costlier than a 1 star air conditioner of the same company of the same tonnage.

The annual operating hours and per unit cost of electricity are the 2 major factors to decide upon which rating Air Conditioner to purchase.

It is typically recommended to go for a BEE 5 star rated AC or further Inverter Tech AC if usage of AC is more than 1000 hours in a year and per unit cost of electricity is more than Rs 5 per unit (if the per unit cost is higher, it is recommended for lower the yearly usage also).

(Also check out our article “When to consider an inverter AC” for more information about energy efficient Air Conditioners.)

ac buying guide

window vs split which air conditioner to consider

11 Mar 2020


Window Air Conditioners require a designated window / wall space equivalent to the height and width of the Window AC unit to be installed and can cool down a smaller area more efficiently when compared to a split AC. Therefore, if one needs an AC for a small room, they should go for a window AC.

They are quite pocket-friendly and easy to install since they come in a single unit. The maintenance cost of a window ac is also low.

In case window ACs without a remote-control facility is planned to be used, it may need to be installed at a reachable height to enable easy access to the manual controls of cooling temperatures, fan speed and other features of the window AC.

It must also be noted that the inner, user-facing portion of the AC and its extended cooling unit on the outside are an integrated unit in a Window AC. Therefore, its use at a low height needs to be thought through properly if the space where the cooling unit would project outside is a usable area like a balcony or porch, which may hamper free movement of people in such areas therefore. In such cases it may be advisable to install the window AC at a height and plan a window AC with remote control facility.


Split Air Conditioners are mounted on a wall and are generally used for large rooms since their cooling capacity is quite higher. They do not require a window for installation. They come with a compressor and condenser where the compressor is placed in the outdoor unit while the latter is placed in the indoor unit which cools the room,

The split AC also adds a new designer element in the room since they are available in various colors and patterns. These factors lead to a higher cost for a split AC. Most of the major technological innovations in this category are also available in the Split version of ACs which are now becoming the default models is use by and large.

Unlike Window ACs they do not need a wall or window cavity which is equal to the width and the height of the entire AC unit. The indoor unit of a split AC model only needs a small hole through the wall for the cables and coils to pass through but needs enough wall space for the entire indoor unit to be fitted on the inside wall. Typically, most split ACs do not need much height for the indoor unit in terms of wall space but need enough space in terms of width surely, in the range of 2 to 4 feet of space by width. Due to this nature of the indoor unit and that most split ACs also come with remote control facility by default allows their installation on the free wall space closer to the ceiling at a higher height, thereby freeing up the main wall space for other possible uses.

Since the outdoor unit of a split AC is a separate unit it can be installed at some distance and a different place from the main indoor unit, thereby giving that much flexibility for it space planning. However, care should be taken to install it in such a place where is regular maintenance is possible to be carried out without much effort or risk of accessing it, while attempting to service or clean the outdoor unit at periodic intervals.

Distinction between Window and Split AC

The table given below can shed some light on the broader differences between Window and Split AC and help you with which AC to choose between the two.

Less EER options available More EER options available
Single unit Two units
Easy installation Complicated Installation
More noise compared to Split Silent operation
Efficient cooling More efficient cooling


Both these types of ACs; split and window are efficient in their own ways; both have its pros and cons. Based on these differences marked in this article, one can sure decide which AC suits his or her requirements.

Moreover, budget plays an important role here. If the user is low on budget then it is advisable to consider a window AC however if there are no budget constraints the user can consider a split AC.

ac buying guide

how to efficiently run air conditioners

21 Apr 2020

Save on electricity bills in 7 simple steps

Summers call for a check on electricity bills and the reasons are surely valid. Air conditioners are high electricity consuming appliances and must be used in an efficient manner to ensure lowest consumption of electricity and highest savings on power and money.

Air conditioners with high star ratings on energy efficiency may cost a little more but will save big bucks in the long run. Does Inverter AC really save electricity? Yes, it does and is a great investment in terms of power efficient mechanisms.

Also check out our article “Does energy star rating really matter” for more information.

But apart from buying modern Energy Star air conditioner models, there are some simple ways to run ACs efficiently and save a little more power on the electricity metres. This AC User’s Guide will give you top 6 hacks to save money on electricity bills

1. Close the room

The AC’s compressor will shut down its cooling and continue blow air at optimal speeds once the set temperature is achieved. To help the AC work efficiently, you can close the room so that the cooled as is not “wasted” and the compressor of the AC aren’t loaded unnecessarily.

2. Set temperate at optimum level

Setting the AC at 18℃ isn’t going to cool the room faster than if it is set at 25℃. The recommended optimum AC room temperature ranges between 23.5℃-25.5℃ in the summer months. This is the comfortable temperature you would yourself like to maintain in the room.

Hence it is wise to set the temperature at 24℃ or 25℃ once and not stress the compressor by fluctuating the settings again and again.

3. Use timer

At night the outdoors temperatures drop down too. Also, as we sleep our body temperatures adjust to that. A cooled room in the initial hours won’t require constant cooling throughout the night to comfort us. Rather such cooling will break our sleep pattern and cause discomfort and chills.

You can use a solution made up of your ordinary dish washing liquid and warm water. You can opt for mild exclusive fridge cleaning agents made up of natural elements like citrus oil.

4. Dim the room

Even when the doors are sealed heat can dissipate out of the window cracks. More so, glass windows can heat up from the outside temperatures which make the indoor cooling inefficient. You can close the curtains and pull down the blinds to help cooling further.

Also, to protect your room from direct sunlight, you may use tinted glasses or films on windows facing direct sunlight to help control the ambient temperatures within a room; thereby more efficient cooling of the room with the AC.

Indoor lighting especially incandescent bulbs release heat which can come as unnecessary hindrances for your AC to cool down continuously. Dim the lights if you don’t need them.

5. Unplug when not in use

The AC stays awake even when it is not turned on but the power supply is given. Have you noticed the green light blinking? Yes, exactly. Simply plug out the AC when not in use, especially when stepping out of the house.

6. Keep filters clean

Clean filters will help the Air Conditioner to breath easily. Clogged filters will strain the compressors as well as not provide the desired results. It is advised to clean the filter-nets as frequently as after every 200 hours of continuous use.

7. Seasonal servicing is a must

AC servicing is a crucial step to ensure efficient performance by your appliance. It will help with deep cleaning as when check for gas leaks which can drastically reduce the life of your appliance.

Be sure to call for authorised AC service partners and use authentic parts provided by them to save money as well as protect your AC manufacturer’s warranty.

Also check out our article “AC Servicing & Maintenance: How important are regular AC Servicing and preventive maintenance” for more information about AC maintenance.

how to decide the required tonnage of ac

22 Apr 2020

What does tonnage in AC terms mean?

In general terms tonnage refers to the weight of an object or thing, whereas in the terms associated with AC world tonnage implies the amount of hot air a unit can remove from the room and cool.

Why AC tonnage is important?

Buying an AC with the right tonnage is an important factor. It does not simply depend on the size of the room, but also on the season during which the unit will be used, number of people in the room etc. But it is advisable to think of the peak temperature during which the unit will be used in a city.

An AC with a lesser tonnage will naturally require more time to cool the room compared to the one with a higher tonnage whereas the latter one will consume more power and energy.

General AC Tonnage size Guide

Keeping in mind the above factors and requirements of the user the following size logic will help you chose the AC with the right tonnage.

Up to 80 Square ft. Will need <1 Ton
81 to 120 Square ft. Will need 1 to <= 1.2 Ton
121 to 180 Square ft. Will need >1.2 to <= 1.5 ton
180 square ft. upwards Will need > 1.5 Ton

Various different tonnage calculators are available online to help users decide the required size of the AC unit, but the above table shows the most common and accurate results to help you guide through the size selection.

The results from different calculators have been combined to give you the most efficient size logic. However, it is always advisable to double check the specific model you are proposing to purchase for the size of room it is being planned for.

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