AC Power Consumption

AC Power Consumption & Electricity Bill Calculation

ACIf you are looking for basic AC power consumption per hour or per month and need to calculate the monthly/daily power usage of your AC then you are at right place. Here is the list of basic electricity use of AC for different capacities.

Power consumed by Split AC

5 Star Split AC Electricity Consumption

  • 1.0 Ton Split AC – 0.98 kW per hour (Approx 1.0 unit per hour)
  • 1.5 Ton Split AC – 1.49 kW per hour (Approx 1.5 unit per hour)
  • 2.0 Ton Split AC – 1.73 kW per hour (Approx 1.7 unit per hour)

Best Selling AC in India


3 Star Split AC Electricity Consumption:

  • 0.8 Ton Split AC – 0.8 kW per hour (Approx 0.8 unit per hour)
  • 1.0 Ton Split AC – 1.09 kW per hour (Approx 1.0 unit per hour)
  • 1.5 Ton Split AC – 1.56 kW per hour (Approx 1.6 unit per hour)
  • 2.0 Ton Split AC – 1.93 kW per hour (Approx 1.9 unit per hour)

2 Star Split AC Electricity Consumption:

  • 1.0 Ton Split AC – 1.15 kW per hour (Approx 1.1 unit per hour)
  • 1.5 Ton Split AC – 1.7 kW per hour (Approx 1.7 unit per hour)
  • 2.0 Ton Split AC – 2.21 kW per hour (Approx 2.2 unit per hour)

Power consumed by Window AC:

3 Star Window AC Electricity Consumption:

  • 1.0 Ton Window AC – 1.15 kW per hour (Approx 1.1 unit per hour)
  • 1.5 Ton Window AC – 1.67 kW per hour (Approx 1.7 unit per hour)

2 Star Window AC Electricity Consumption:

  • 1.0 Ton Window AC – 1.25 kW per hour (Approx 1.2 unit per hour)
  • 1.5 Ton Window AC – 1.74 kW per hour (Approx 1.7 unit per hour)

AC Type 



Stllr Rating




Cooling capacity

Power- Consumption

( Watts/Hr)







Split AC



 5 Star








3 Star




















Window AC






l.OTon3 Star3.05






Calculation of AC Power consumption and Monthly Electricity Bill

Above is the list of basic AC power consumption considering full load while running. You can calculate the monthly electricity bill for your AC by following this steps:

Sample AC Nameplate with kW

What details will be required to calculate the energy consumption by AC for one month?

  1. kW rating of your AC (You can check kW rating Printed on your AC nameplate).
  2. Daily total running hours of your AC
  3. Cost of 1 unit of your electricity board. (Consider  6 Rs. if you don’t know the actual cost).


> Let’s calculate the total units consumed by your AC in one month:

Units per month = kW of Air Conditioner * Daily running hours * 30

Example: 1.5 kW of AC running for 8 hours per day.

= 1.5 * 8 * 30

= 360 Units per month.

>  Calculate monthly electricity bill  using units consumed by AC :

Consider the cost of 1 unit as 6 Rs.

Electricity bill for AC= Units per month * Cost of one unit

 = 360 * 6

= 2160 Rupees

Factors affecting the energy consumption of Air Conditioner:

This is the basic calculation of AC power consumption. There are so many factors which affect the power consumption:

(i) Type of AC

Since Inverter AC‘s don’t work at full limit once the required temperature is accomplished the blower works at a lower RPM decreasing force consumption.

Suppose – you start the AC and your room temperature is 30 degrees, once your required temperature of 24 degrees is obtained the inverter AC will bring down the RPM of the blower and henceforth the power devoured will less compared to the time when AC was started.

Here is the comparison chart of inverter AC Power Consumption vs Conventional AC power consumption.

Inverter AC power consumption vs Conventional AC power consumption

(ii) Atmospheric temperature

The temperature of your room is critical which will fluctuate every day, how hot is it outside and regardless of whether you are residing on the top floor and the number of windows and sort of glass utilized as a part of it.

(iii) Size of your room/hall.

(iv) Running hours

Running time per Day/Night, Since amid night your dividers won’t be persistently warmed by singing sun and your windows won’t toss daylight and warmth in the room.

(v) Fan Mode

 If your AC running most of the time in fan mode than electricity consumption will be decreased significantly.

(vi) Energy efficiency ratio (EER):

Each Air conditioner has a vitality effectiveness rating that rundowns what number of BTU‘s every hour are utilized for every watt of intensity it draws.

EER in AC Power Consumption

For room AC, this rating is the Energy Efficiency Ratio or EER. For focal Air Conditioners, this rating is the Seasonal Energy Efficiency Ratio or SEER.

These ratings are posted on an Energy Guide Label, which must be connected in an unmistakable place on all new Air Conditioners. Numerous AC producers are intentional members in the Energy Star naming system. High Star machines show that high EER and SEER ratings and thus decreased power consumption.

(vii) Energy star rating:

Air conditioner models with 1 to 5 stars rating are accessible in the market. A 5-star demonstrate spares most extreme savings, and the 1-star rated display expends greater power. A consistent AC utilized for domestic use has a range of 5,500 – 14, 000 BTU/hour. Here is the chart of 1.5 Ton AC power consumption and saving per month.

1.5 Ton AC Power Consumption and Saving

On the off chance that the atmosphere is hot, it is prescribed to buy an AC with higher BEE rating. The ratings are granted by BEE (Bureau of Energy-Efficiency).

(viii) Location:

A few urban areas are hot; some are damp and some chilly. An air conditioner completes 2 things: cool the air and evacuate the stickiness. In the event that a city is hot, a large portion of the power is expended to cut down the temperature.

Be that as it may, a few urban areas are moist yet not exceptionally hot (coastal locales) and in light of the fact that the exchanging of the blower relies upon temperature. So a 1.5-ton AC in a comparative setup in 2 urban areas will devour distinctive measure of power in light of the fact that the temperatures are extraordinary. The utilization will be less in the city with bringing down the temperature.

This additionally raises a point that the tonnage of AC required for a room fluctuates crosswise over urban areas. A city that is muggier does not require much cooling but rather needs a greater amount of stickiness evacuation. Stickiness evacuation relies upon the ideal opportunity for which blower runs.

In the event that the AC is larger than usual, the blower will keep running in short cycles and consequently won’t have the capacity to expel mugginess viably.

(ix) Electronics apparatus in the room:

We regularly watch that our laptops or PCs heat up after long activity. Indeed, even cell phones carry on a similar way. All electronic and electrical machines radiate a warmth that will be cooled if Air Conditioner is turned on. Indeed, even knobs and lights transmit warm alongside light.

In this way in the event that you put a considerable measure of lights in a room, the room will require more cooling. Accordingly utilizing lesser lights will have a twofold advantage.

Here is the list of best-rated AC which consumed less energy with robust performance.

Also, check out best-LED TVs in India.

Don’t forget to share this article.

Please feel free to ask in the comment section if you have any query regarding Air Conditioner power consumption. You can also give feedback in the comment section.

Thanks for reading.

Spread the love

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.