AC Refrigerants & Star Ratings: What’s EER, CoP, ISEER

Coolant can be called the refrigerant and forms a significant part of refrigeration equipment and air conditioning. The principal use of the air conditioning refrigerants would be to absorb heat from the space and send it out as soon as you remove heat from the space, the atmosphere in the area mechanically chilly. The coolant is in the gas. The compressor compresses this gas at elevated pressure and transforms it into a liquid. At such intense pressures, the liquid has a rather high temperature.


This liquid moves through the condenser coils, at which the warmth of the liquid comes down substantially, but the pressure stays high. On releasing the high heeled liquid through an expansion valve, then the AC components decrease the strain. This liquid then travels throughout the evaporator tubes/coils. This chilly liquid absorbs the heat from the chambers and removes it hence creating the atmosphere in the space cold. The lovers from the AC unit assist in sustaining the warmth. On absorption of this heat, the evaporation of the liquid takes place and it transforms into gas once more. Exactly the identical procedure is repeated continuously. This is the way an AC functions. Therefore, you've noticed the refrigerant is the main part of any AC.


Most importantly, Panasonic AC Technologies specializes in providing the most impressive copper coils and condensers.

Air conditioning Refrigerants

Ordinarily, when you discover the AC not offering sufficient cooling, the mechanic suggests to replace the coil. Just what’s this the gasoline as they call it in several areas of the planet? Assorted sorts of refrigerants are being used in recent years. They're as follows.


Chlorofluorocarbons – CFC

These were the first coolants used in AC units all over the world. They were also called R12 refrigerants. They were powerful, but they played a fantastic part in the depletion of the ozone layer. This lead to the discontinuance of the R12 refrigerant manufacturing. Now, no AC employs this coolant any place on the planet.


Hydrochlorofluorocarbons – HCFC

Environmental concerns lead to the replacement of CFCs from the HCFCs. This refrigerant, popularly called R22, has become the most frequent coolant used in AC units in India today. But this coolant is likewise not very environmentally friendly. Consequently, there are signs that these coolants will probably be phased out within another 4 to 5 decades. That is the reason you need to be very careful when choosing your AC. If the guide suggests the R22’s usage since the coolant, it's highly advisable not to purchase that AC as it's an obsolete one. This is despite the fact that nearly all AC units utilize this coolant in India.

Hydrofluorocarbons – HFC

HFCs don't deplete the ozone layer when contrasted with this R22 coolant. Hence, they're relatively environmentally friendly. You've got three sorts of HFCs in use now (R32, R134, and R410A). The entire world has moved forward and changed over into a more environmentally friendly refrigerant, the hydrocarbons. India is also near the heels of those developing countries and has strategies to phase out the hydrofluorocarbons from the next several years.


Hydrocarbons – HC

The hunt for the biggest environmentally friendly coolant has engaged the entire world to HCs. AC manufacturing firms all around the world nowadays use R600A (Iso-Butane) and R290 (Propane) as refrigerants. They're reputed to have no impact on the ozone layer. Hence, they're also known as green refrigerants. The inverter AC uses such sorts of coolants inside them. Research remains in this area to find the very best environmentally friendly coolant. Until now, they develop osmosis, the R290 and R600A are going to have a field day. An individual should have knowledge about these moment variables while deciding to buy AC units for your residence. Each individual on the earth has a responsibility to keep the sanctity of the surroundings. You have to make a better world for the children to dwell in. Little things like picking the ideal coolant for your AC and fridge can play a large role in this endeavour.


Star Ratings CoP, ISEER, EER

Let's now examine the points affecting the AC components’ efficacy besides the idea of star ratings.


Energy Efficiency Ratio: (EER)

Energy Efficiency Ratio: (EER)


Therefore, EER = BTU/hr/Watt

Higher EER means greater operation since the AC removes more heat per hour for each unit of electricity consumed. Therefore, you can deduce that an air purifier having a high EER is much more efficient.

Co-efficient of Performance: (CoP)

You need to do some common mathematical calculations to attain the CoP. To be able to comprehend the idea of CoP, you ought to be aware of the connection between BTU and KW hr.

1 KW hr = 3412 BTU. As an alternative, you may say that 1 KW = 3412 BTU/hr.

So, 1 W = 3.412 BTU/hr

Currently, CoP is the entire amount of heat removed by the AC at Watts divided by the energy consumption (Watts). Hence, CoP doesn't have any components. The greater the CoP, the greater is the efficiency of the air purifier. Let's now examine the connection between EER and CoP.

EER = 3.412 X CoP

Star Ratings

Whenever you venture to grab an AC, the first thing to do is be aware of star ratings. Just what’s the star ratings gonna be? The Bureau of Energy Efficiency, exclaims these star ratings for numerous electronic products. A huge deal of variables goes into formulating the procedure. These evaluations are fixed for some periods. The most recent star ratings published by BEE are from Jan 01, 2018, to Dec 31, 2023.


You ought to check the star evaluations alongside the EER. It's crucial on the part of AC manufacturers to incorporate the EER on the star rating sticker. Understanding the 5-star AC is obviously likely to be more costly than the 4-star AC. But you do save a great deal in energy intake over an extended duration. There are various facets to research while discussing the subject of electricity savings. They include the SEER, ISEER, along with other conditions involved with the performance of the AC, for example, CSTL and CSEC. We will look at these conditions in short for the interest of greater comprehension of the subject.


Seasonal Energy Efficiency Ratio (SEER)

Among the numerous factors which impact the functioning of the AC is your internal and external temperature. In case the temperature outside your home is more, the AC absorbs more power to cool the insides. The temperatures during the rainy season and winters are a lot less than what you get in the summertime. Hence, the EER of this AC changes based on the period where you use the appliance. This is the Notion of SEER.

Indian Seasonal Energy Efficiency Ratio (ISEER)

  • The Notion of ISEER and SEER is the same. But you have to appear in two extra factors as below.

  • Cooling Seasonal Energy Consumption: Total energy sucked by the AC as it's in active mode.

  • Cooling Seasonal Total Load (CSTL): Total heat eliminated by the AC in busy mode.