Calculate Power Consumption of an Air Cooler:

Air-Cooler-Power-Consumption-calculator

Air cooler power consumption is much less in comparison to air conditioners which makes them a great cheap alternative to air conditioners, because of this more and more people are using it to beat scorching summer heat. Air coolers comes in different sizes, ranging from 20 liters to all the way up to 100 liters which can be used as per the size of room to be cooled.

Rated power of an air cooler varies from 150 watts to 300 watts which is quite less considering the cooling effect they offer. Power consumption of a 200 watts air cooler running for 5 hours in a day is 1 kWh of electricity per day and 30 kWh of electricity per month.

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Air Cooler Working

How an air cooler works is when the warm air is drawn into an air cooler, it passes through a wet honeycomb cooling media. As it passes through the honeycomb cooling media, water flowing over it absorbs heat from the air causing the water to evaporate. This result in cooler, moisturized air. A powerful fan then propels this cool air into the room (or outdoor area). The result is a constant flow of fresh, moisturized, cool air while stale air is circulated out of the room through an open window or door.

Things To Know for calculating Air Cooler Power Consumption:

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Wattage of 24 liter cooler is 180 watt - Image Courtesy Amazon
air cooler wattage
Wattage of 36 liter cooler is 100 watt - Image Courtesy Amazon

To calculate the power consumption of your air cooler you will need to know the rated power of your air cooler.

Now the rated power of an air cooler varies from brands to brands, type of air cooler and size of air  cooler. 

As you can see from the above image, a 24 liter air cooler has rated power of 180 watts, whereas a 36 liter air cooler from Bajaj has rated power of only 100 watts.

Hence, it is not possible to give you an approx value of wattage, What I would suggest is check the back of your air cooler it should have a technical specification sticker which will have all the information about the product such as wattage, size and more.

If you can’t find the sticker then go to your manufacturers website or go to amazon and search for your air cooler or similar size air cooler or similar brand air cooler and use it’s wattage for calculation.

To use the air cooler power consumption calculator to calculate the power consumption of your air cooler and interpret the results properly you should understand the following terms.

If you already understand these terms feel free to skip the following section and go use the power consumption calculator.

  • What is Watt (W) – Watt is a unit of power. It means the rate at which electricity is consumed or produced by a device. For example a 50 watt TV consumes power at a rate of 50 watts per hour, it does not mean that the TV consumed 50 units of electricity, it means it will consume power at a rate of 50 watts every hour.
  • What is Kilowatt (kW) – Kilowatt is also a unit of power. Kilowatt (KW) is used for large devices that consume more power. For example a 1.5 kW air conditioner, 6 kW elevator. 
  • What is a Kilowatt hour (kWh) – Units as described in electricity bill a.k.a kilowatt hour is the energy consumption of a device. For example a 50 watt Television (TV) running for 50 hours will consume 50 watt x 50 hours = 2500 watt hours = 2.5 kilowatt hours of electricity = 2.5 units of electricity. (1 kWh of electricity = 1 unit of electricity)
  • Electricity Tariff – Electricity tariff is the amount the electricity provider charges you for one unit (kWh) of electricity. I live in Mumbai, India here the electricity tariff is Rs 12/kWh. If you don’t know how to calculate your tariff then just divide your total bill by monthly power consumption and you will get your electricity tariff.
  • What is operational hours – Operational hours of a device refers to how many hours the device is working. If you run your television for 3 hours then operational hours of your television is 3 hours.

To calculate the power consumption of your air cooler just put the wattage of your air cooler, operational hours and electricity tariff of your locality and you will get the units of electricity consumed by your air cooler and the impact it has on your electricity bill.

If you don’t know the rated power of your air cooler then just find a similar air cooler on amazon and check its wattage in the description or take take it as 200 watts, as most average size air coolers have that much of rated power.

Air Cooler Power Consumption calculator:

Main advantages of Air Coolers:

  1. Air coolers are affordable – The initial cost of buying an air cooler is much less than that of an air conditioner. That means lower investment!
  2. Air coolers are eco-friendly –  Air coolers use water for cooling and do not use any refrigerant such as CFC for cooling as is the case in air conditioners. Hence they are very Eco friendly.
  3. Air cooler are energy efficient – The power consumed by air cooler is much less as compared to the air conditioners, so the annual energy saving is significant.
  4. Air Coolers are portable – Unlike AC’s, air coolers are mobile and can be moved to a room that needs to be cooled.
  5. Air cooler circulate fresh air – Air conditioners cool the air inside your room and once your is room hot it cools the same air again, whereas air coolers use fresh outside air, cool it and direct it inside the room. Hence more fresh air is circulated in the room.

Main disadvantages of Air Coolers:

  1. Air coolers increase humidity – The major disadvantage of an air cooler is its dependency on the climate. In areas with very high humidity, the coolers may prove to be less efficient. The air coming out of the coolers is humid because of the evaporated water this adds to the humidity in the air. If you are buying a new air cooler then opt for one with humidity control.
  2. Air cooler need water – Coolers need  continuous supply of water. Also if you are living in a region with hard water, the internal parts of your cooler might corrode.
  3. Air coolers are noisy – The fan in the air coolers makes noise which might be disturbing for some people, however in my view it will be easily ignored once a gush of fresh cool air hits your body.

Tips To Run Air Coolers Effectively:

  1. Keep the doors and windows open so that there is enough flow of fresh air in the room. And placing the cooler near the window will be an added advantage and will cool the room faster.
  2. Adding ice water or ice in coolers will lower the temperatures even further. So using ice water is a good idea on very hot days.
  3. In case there is foul smell coming from your cooler, it is an indication to clean it. Cleaning and maintaining your cooler will help increase its lifetime.

Reference used for Air Cooler Power consumption calculator:

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