Understanding The ISEER Rating of Your AC

by Amili R. SEO While buying a new electronic appliance, you must come across the term “Star rating,” “ISEER rating,” or “SEER rating.” While these are some common phrases in the electronics industry, you might not be familiar with what they exactly mean or denote. We have brought here the basics of these energy efficiency rating systems for your air conditioner so that you can see how and why to choose the highest ISEER rating AC.  

Let’s dive into the details to help you find the best air conditioner for your place without making any mistakes.  

The EER Rating

The Bureau of Energy Efficiency (BEE) introduced a grading system, called Energy Efficiency Ratio or EER for home electronic appliances such as air conditioners and refrigerators. It is the ratio of the amount of heat an AC can remove to the total amount of energy it consumes within an hour.  

When we talk specifically about India, there is a significant change noticed in temperature across different seasons. This leads EER to become ‘not so efficient’ for air conditioners in India and they consume excessive energy, increasing your power bills. To solve this problem, BEE brought another rating system, called the Indian Seasonal Energy Efficient Ratio or ISEER.

The ISEER Rating

You must have gotten some idea of what ISEER is from the previous section. It is simply the seasonal version of the EER rating, which means

ISEER Rating = Cooling seasonal total load (CSTL) / Cooling seasonal energy consumption (CSEC)

As per the value of this ratio, the star rating of an appliance is picked. For example, you might hear about a 1 Ton 3 Star Split AC. The “3 Star” factor here is determined based on the amount of heat your air conditioner removes and how much energy it consumes in doing so. This rating also differs based on the type of AC you pick, meaning that a 3 Star split air conditioner would be more energy efficient as compared to a 3 Star window air conditioner. So, you must keep this factor in mind before picking the best AC for your place.  

A High ISEER

The more you move towards the highest ISEER rating AC, the more benefits you can get because a high-rated air conditioner is more energy efficient as compared to a low-rated machine. However, there are a few more factors that get affected due to an increase in the ISEER rating, including:


Power consumption: As mentioned earlier, the more stars on your air conditioner, the better the power savings. So, you will not have to worry about your monthly electricity bills.  

Purchase cost: Another thing that is affected by an increase in the star rating is the purchase value of the machine. For example, a 5 Star rated air conditioner would be costlier than a 3 Star rated one. But one thing to note here is that you will save more with a high-rated AC through reduced energy bills.   


What Do You Need To Look For?

Knowing all these details is important for you. But you also should know what to look for while buying a new air conditioner. You need to find the Star rating label authorized by BEE in order to explore all details about the AC’s energy efficiency. This label will provide you with information about the star rating of the machine, its ISEER rating, power consumption, and cooling capacity, along with its model details. So, it becomes convenient for you to pick the best model as per your requirements.  

Along with the label, here are a few details that the AC manufacturer will provide. You must check this as well.  


Cooling Seasonal Energy Consumption (kWh): According to the standards defined by BEE, the annual power consumption is calculated for 1600 hrs of use for the machine.  

Rated Cooling Capacity (100% Load): This is the cooling capacity of a specific machine that is marketed by the manufacturer. For example, an inverter air conditioner’s cooling capacity may vary between 0.2 tons and 1.2 tons. However, it is marketed with a capacity of 1 ton.   

Half Cooling Capacity (50% Load): The name itself describes what this is. One point to note here is that the cooling capacity of the machine may go below this level as this is not the minimum capacity, but only half.

Maximum Cooling Capacity: This is the maximum capacity that the specific machine can achieve. It can be more than the marketed capacity.  

Power Inputs: Just like the cooling capacity, the manufacturer provides you with the Rated Power Input (consumption at the marketed load), Half Power Input (consumption at 50% load), and Maximum Power Input (consumption at the maximum achievable load).  

Conclusion,

Now that you know what ISEER, EER, and Star ratings are, it will be easier for you to find the perfect air conditioner for your needs. You must check all the relevant information provided by the manufacturer in order to avoid any confusion. Also, you can ask the experts for advice in case you get stuck in any doubts about the air conditioner. This way, you will not end up making any mistakes while purchasing the product.

 

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Created on Mar 22nd 2023 07:10. Viewed 124 times.

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