How To Decide the Right Size of AC

Decide the Right Size of AC

When buying a new AC, you need to investigate several factors like the brand, features, air conditioner price in Sri Lanka, etc. While all these aspects are important, the size of the air conditioning system leads this list. The wrong size of a Daikin AC can lead to complete wastage of money, time, and effort. That is why you need to spend some time researching the correct size of the AC that will fit your needs and cool your area efficiently.

We have brought here all the details that you must know about the size of the Daikin AC, helping you find the perfect match for you. So, let's begin.

Understanding The BTU (British Thermal Units) System

When we speak of the size of the Daikin AC, we are not talking about its physical dimensions. Rather, we are talking about the cooling capacity of that system which is defined in BTU or British Thermal Units. In technical terms, 1 BTU is defined as the amount of heat needed to increase one pound of water's temperature by 1° F. So, for your Daikin AC, BTU would mean the amount of power your system will consume to cool down a certain area.

You might also hear the term 'ton' or 'tonnage' used for explaining the size of the air conditioning system. Ton can be easily converted into BTUs (British Thermal Units) as one ton is approximately equal to 12000 BTU. Now that you know about the unit of calculation, let's see whether you need 1 ton, 1.5 ton or 2-ton inverter AC.

Selecting The Size of the AC

Your Daikin AC should provide you with a comforting experience and not become an everyday struggle. That is why you need to find the right size according to your space so that you can avoid any trouble with the system.

To start with, you need to calculate the total area of the room where you plan to fit in the air conditioning system. Once you know the area, you can check the range in which it lies and what might be the correct size of the Daikin AC that you will require. In case you have any doubts, you can consult an expert and get their opinion rather than going with any wrong option. They will be able to guide you the best.

Factors Affecting the Size of the AC

The area of your room is not the only factor that affects the size of your Daikin AC. You need to consider a few more things before deciding on the BTUs or the tonnage. These include:

  • Surrounding Conditions: The outdoor climate and humidity level can also affect the AC capacity. You need to check what kind of conditions your system will have to face and then decide.
  • Indoor Factors: Factors like ceiling height, floor number, window area, number of people in the house, etc. also affect the AC size. For example, you need 1.5-ton AC according to your room size, but your room's ceiling is higher than usual. Then you might need to go with a 2-ton inverter AC.
  • Time Of Operation: The time of the day and the number of hours that you are going to use the Daikin AC also matter when deciding the tonnage.

There are a few other factors like other devices in the room that might be dissipating heat, construction material of the room, amount of sunlight getting into the room and so on, that you must check before finalizing the size of your Daikin AC.

Why Do You Need the Perfect Sized AC?

The very first problem you will face with a wrong-sized Daikin AC is poor efficiency. While you can use a smaller sized AC for a large area, it will take longer to cool, will go through excessive wear and tear, and will consume unnecessary energy. The same thing goes for using a large-sized AC in a smaller space as it will consume more energy to cool the area and will create a sticky feeling in the atmosphere.

To make sure you do not end up paying huge amounts of electricity bills and get an unmatched cooling experience, you must pick the right size of Daikin AC.


While this might look like a lot of effort, it is a one-time thing. Once you find the perfect Daikin AC for your place, you can look up air conditioner price in Sri Lanka and enjoy seamless cooling for the longest time. However, you must consult an expert if you feel stuck at any point. They will analyze your requirements and will give you the best advice about which AC you should pick. So, you will not have to settle for the wrong product.


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