How to Choose the Right AC Tonnage for a Room
How to Choose the Right AC Tonnage for a Room

Calculate AC Ton for your room, What is the Cooling Capacity of AC, How to Calculate the right AC cooling capacity for a Room, How to Choose the Right AC Tonnage for a Room

An air conditioner (also known as AC), is a device that lowers the temperature of an interior space by removing heat and moisture from the environment. In summers, most people need AC as it cools the air in our homes.

However, while searching for it, many buyers get caught around different tonnages (or tons) and are unable to choose the right tonnage for their room.

So, if you are also one of those who want to choose the right AC Tonnage for a room, you just need to read the article till the end as we have things by which you can choose the right AC.

How to Calculate the right AC cooling capacity for a Room?

The cooling capacity is the measurement of a cooling system and its ability to remove heat from an area. The SI units are watts (W) but they can also be described in tons.

Cooling capacity is measured in British thermal units (BTUs) or more commonly tons, where one ton is equal to 12,000 BTUs.

BTU is the necessary temperature to increase 1 pound of water by 1 degree Fahrenheit. BTU/hr (or BTU per hour) means how much heat per hour a unit can dissolve from the air. The higher the BTU, the more the cooling capacity.

To find the minimum cooling capacity required to cool an area or room, there are multiple factors including:

  • Numbers of electronics gadgets or appliances in the area (or room) that are releasing heat.
  • Type of furniture used in the windows and doors of the room (like whether it’s iron or wooden).
  • Direction and location of your room.

However, there are some simple ways by which you will get a basic idea of the cooling capacity for your room.

Formula 1

  • Find the cubic volume for your room in feet (To calculate the volume, measure the length, width, and height of the rectangular area and multiple them, you will get Volume, i.e, Volume=Lenght x Width x Height).
  • Multiply the volume by 6, i.e., C1=Volume x 6.
  • Take an estimate of the average number of people that will occupy the area and multiple it by 600, i.e., C2=Average people x 600
  • Add both C1 and C2 to get the average cooling capacity in BTU/hr, i.e., C=C1+C2.
  • Divide the cooling capacity by 12,000 and you will get the result in tons (or tonnage).

Formula 2

  • Find the area of the rectangle for your room in feet (To calculate the area, measure width and length and multiply them, you will get the area, i.e., Area=Width x Length).
  • Multiply the number of square feet you will cooling by 25. This equals the total number of BTUs you need to adequately cool your space, i.e., C1=Area x 25
  • Also, take an estimate of the average number of people that will occupy the area and multiple it by 600, i.e., C2=Average people x 600
  • Now, Add both C1 and C2 to get the average cooling capacity in BTU/hr, i.e., C=C1+C2.
  • Next, divide that number by 12,000 and you will get the tonnage capability (or tons) you need.

How to Check the Real Ton Capacity of an AC?

Now, if you got the Ton capacity you need for your room, you might be wondering how you can check the tonnage capacity of the AC you are purchasing. Don’t worry, there are many ways by which you can check it.

  1. The tonnage capacity of the AC is mentioned in the product listing or in the invoice of the product.
  2. If you can’t find it in the listing or invoice, then take a look for the model number of the AC. There you will find a two-digit number in between the model (like JH-Q18WUZA or JW-Q24UZAW).
    The number represents the BTU, so multiply the number by 1000 and you will get the BTU (where 12,000 BTU means 1 Ton, so if you are seeing 18 numbers in-between model numbers, it means the AC has 1.5 Ton capacity). Check out Best 1.5 Tons AC.
  3. If you are not able to find the model number, then look for the star rating sticker on the AC (it’s more helpful when you are seeing the AC offline).
    Check the 100% cooling capacity of the AC, it should be mentioned in W (watts). Now, you can easily convert it online from any website such as kylesconverter or convertunits website.

Note that, the real ton capacity of 1 Ton AC is not exactly 1 Ton, it’s a little less but close to 1 Ton and the same can be said of higher capacities ACs.

Conclusion: Choose the Right AC Tonnage for a Room

So, this was all about the Cooling capacity and finding the right AC tonnage for a room. We hope the article helped you in finding the right Air Condition Ton for your environment.

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