The **National Educational/ Awareness programme **on standard & labeling has created a PPT to educate end AC users/ Distributor and Manufacturer to help them understand the Air Conditioner Labeling system so that they can choose the best energy efficient Air conditioner for their home and office. Energy efficient Air Conditioner help in electricity saving hence result in saving money cumulative.

In this article, we are going to discuss few basics terms which are being used below and **Air conditioner electricity consumptions** calculator.

## Basic Terms for Air Conditioner labeling-

In this, we will explain various technical terms which help you in calculating the Air Conditioner Electricity consumption per hour depending on different AC Capacity and cooling capacity per hour.

### 1- Cooling Capacity

- Amount of Cooling produced by the AC
- Units Used- TR, Btu/hr, kCal/hr, Watts
- Here 1TR is equal to 12,000 Btu/hr = 3,024 kCal/hr = 3,514 Watts

### 2- Power Consumption

There are two important components used in AC, Compressor + Fan Motor If they both are working together the Air Conditioner will consume electricity at normal given rates as shown on the Air Conditioning unit (Check Below)

Here the Power Consumption is 1550 Watt that means 1.5 Units per hour. If an Air conditioner is running on a stable load, Compressor is working, No electricity fluctuation is happening then an Air Conditioner is with 1550W power consumption is supposed to consume approx 1.5 units per hour

1 Unit = 1kWH (Kilo Watt) OR 1000 W

1550 W/ 1000 = 1.55 Units per hour

We will discuss more on this in later subsections

- Electrical Power consumed by electrical equipment = Compressor + Fan motor
- Split Air Conditioner uses 2 fan motors
- Unit used- Watts, KiloWatts

### Air Conditioner Power Consumption Calculator-

In India, we pay Electricity charges based on **Units of Consumptions **and 1 Unit = 1kWh (1000 Watt)

Just for an example,

**Example 1**: –

10 number of 100-watt bulbs turned on for 10 hours will consume 10 bulbs * 100 Watts each * 10 hours (Duration) = 10000 Watts

Now we already know that **1 Unit is equal to 1kWH (1000 w) **hence we need to divide total kWh consumption with 1000

10000/ 1000 = 10 Units

That means if we turn on 10 Bulbs of 100 watts per hour consumption for 10 hours will cost us 10 Units per day.

**Example 2: –**

An Air Conditioner having 2000 Watt consumption per hour

How many Units it will consume if we happen to turn it on for 8 hours a day

2000 watt per hours * 8 hours

= 16,000 Watts consumed in 8 hours

16,000/ 1000 = 16 Units electricity consumption

That means if we turn on a 1.5 Ton Air Conditioner for 8 hours it will consume 2 Units an hour and 16 units in 8 hours operation.

## Energy Efficiency Ratio (EER) For Air Conditioners

- EER of AC = Cooling capacity in Watts/ Power consumption in watt
- EER of 1TR (3,514 W) capacity AC Consuming 1,500 watt per hour is equal to 3,514/ 1500 = 2.34
**Air Conditioner star rating system As of now based on EER>**Star 1= 2.3, Star 2= 2.5, Star 3= 2.7, Star 4= 2.9, Star 5= 3.1- EER Can be improved by improving the cooling capacity of the AC or reducing the power input or both
- A higher number of stars means low electricity consumption hence resulting in monetary savings for end AC users.
- You can find a Air Conditioner Labeling on the AC unit

For example we will try to calculate per hour unit consumption of an 1.5 Ton 5 star air conditioner by using following data

The cooling capacity of AC – 5275.5

Power consumption- 1677

Now we know **EER= Cooling capacity of AC/ Power consumed by AC**

= 5275.5/ 1677= 3.14

We put 5 star tag if the EER is 3.1 or more then that

5275.5/ 3.14= 1701.77 Watt and this will be considered as 1 hour electric consumption and if we continue to run this for 8 hours then total consumption will be 1701.77*8= 13.616 kWh

**Hence if you run 1.5 ton, 5 star ac for 8 hours a day, it will consume 13.616 units**

### Air Conditioner labeling helps whom?

It basically helps the whole chain starting from manufacturing to end users in following ways which are listed below

- OEMs- Improved top line and bottom line, Product differentiation
- It helps channel partners in improved margins
- End Users- Saving in monthly electricity bills and monetary savings
- Our country and society- Huge reduction in energy demands

**Role of channel partners-**

1- Provide correct information on labeling

2- Guidance in choosing High Star AC

3- Interfacing between customers and OEMs

4- Spreading awareness of star labeling