Close Menu
    Facebook X (Twitter) Instagram
    vsctimes.com
    • Home Appliances
      • Air Conditioners
      • Washing Machines
    • Kitchen Appliances
    • Televisions
    • Knowledge
    • Water Purifiers
    vsctimes.com
    Home»Air Conditioners»AC Tonnage Calculator in India 2025
    Air Conditioners Knowledge

    AC Tonnage Calculator in India 2025

    Srinivasa ChaithanyaSrinivasa Chaithanya1 Mar, 20250
    AC Tonnage Calculator India
    📖 Table of Contents [+]
    • What capacity AC is required for the room?
    • How do I calculate AC tonnage?
    • AC Tonnage Calculation Formula

    When you decide to purchase an Air Conditioner for your home, the first thing you check out is the tonnage required.

    Please enter between 50 and 400 sq ft.
    10 ft

    What capacity AC is required for the room?

    Use our calculator to find out the AC tonnage required for your room.

    Step 1: Enter the room area in square feet.

    Step 2: Enter the height of the ceiling in feet.

    Step 3: Choose the climate type between ‘Hot’ and ‘Average.’ Generally, the ‘Average’ option is the right one.

    Step 4: If there is no other room above, your ceiling receives direct sunlight. Select ‘Yes,’ otherwise, you can select ‘No.’

    Step 5: Provide information on whether direct sunlight is on the walls in the South, West, or South-West direction.

    By providing this information, you can calculate the tonnage required for your room and the size/capacity of the AC necessary.

    How do I calculate AC tonnage?

    The mathematical calculation to determine the tonnage required for an AC can be a bit confusing as it involves using terms like BTU (British Thermal Unit), etc. For the record, 1 ton equals 12,000 BTU. First, however, we shall look at a simple way to calculate the tonnage necessary for our rooms.

    AC Tonnage Calculation Formula

    Calculate the volume of the room (length x breadth x height) in cubic feet. Divide the volume by 1,000, and you get the AC tonnage required for your room.

    However, this calculation is an average figure because many other aspects affect the AC capacity required for your room. These factors are as follows.

    • The overall climate of the place you live
    • Whether you live on the top floor or there are floors above your room (whether sunlight falls directly on your ceiling)
    • The positioning of the windows (direction is crucial, and whether sunlight falls on the room’s walls)
    • The number of people occupying the room
    • The furniture and other electrical/electronic equipment in the room

    Our calculator considers all these aspects when calculating the tonnage required for the room. The air conditioner size depends on the required tonnage.

    This table will help you to arrive at the right AC size for your room. We make the following general assumptions.

    • The number of occupants in your room is three to four.
    • The height of the ceiling is 10 feet (average height of ceilings in Indian rooms).
    AreaCooling RequirementRecommended AC tonnage
    AC for 100 sq ft0.9 tons1 ton AC
    AC for 120 sq ft1.0 tons1 ton AC
    AC for 150 sq ft1.3 tons1.5 ton AC
    AC for 160 sq ft1.4 tons1.5 ton AC
    AC for 170 sq ft1.5 tons1.5 ton AC
    AC for 200 sq ft1.7 tons2 ton AC
    AC for 250 sq ft2.1 tons2 ton AC
    AC for 300 sq ft2.6 tons2.5 ton AC
    AC for 400 sq ft3.4 tons3.5 ton AC

    These cooling requirements and recommended tonnage will change if your room has direct exposure to sunlight either from the ceiling or from the walls (south, west, or south-west directions).

    The thumb rule for calculating these figures is as follows.

    • If you live in places with a hot climate, add 0.10 tons to the cooling requirement.
    • If your ceiling has direct exposure to sunlight, add 0.10 tons to the cooling requirement.
    • If your room has walls exposed to sunlight from the south, west, or south-west directions, add 0.10 tons to the cooling requirement.
    • The recommended tonnage should be at the next higher decimal. For example, if the cooling requirement is 1.7 tons, you should go for a 2.0 ton AC. However, if the requirement is 1.6 tons, you can settle for a 1.5 ton AC.

    So, if your room area is 150 square feet with walls facing the west and no floor on top, your cooling requirement increases to 1.6 tons. Thus, you will need a 1.5 ton Air Conditioner for your room. However, if you reside in a hot place, the cooling requirement increases to 1.7 tons, and hence, you have to invest in a 2 ton AC.

    Here are some frequently asked questions on calculating AC tonnage?

    How do you calculate the room size for AC?

    Generally, you calculate the volume of the room instead of the ground area. Therefore, the room size should be Length x Width x Height.

    However, you can enter the ground area (Length x Width) and the ceiling height separately when using our calculator.

    What should be the ideal 1.5 ton AC room size?

    Under normal circumstances, a 1.5 ton AC should be sufficient for rooms having an area between 130 and 170 square feet. However, if you consider the sunlight exposure to the ceiling and walls, the ideal size should be 130 to 150 square feet.

    What is the 1 ton AC room size in square feet?

    Rooms up to 120 square feet area need a 1 ton AC. However, if you reside in a hot place with direct sunlight exposure to your ceiling and walls, the recommended area for a 1 ton AC is around 100 square feet.

    What should be the ideal 2 ton AC room size?

    Under normal circumstances, the ideal room size for a 2 ton AC should be around 175 square feet to 250 square feet. But, again, a lot depends on where you live and the sunlight exposure to your home. If you consider these aspects, a room with an area between 160 and 200 square feet should have a 2 ton AC.

    Share. Facebook Twitter Copy Link Pinterest Email Reddit
    Srinivasa Chaithanya
    • Website

    Srinivasa Chaithanya is a Computer engineer, creator, and editor in chief of vsctimes. He is a Microsoft Certified Solutions Expert and has experience of Ten years in technology news reporting and his area of expertise includes Large Appliances and Electronics.

    Related Posts

    Washing Machine Powder vs Liquid detergent | Which is better?

    19 Mar, 2025

    What is Hygiene Steam in Samsung Washing Machine?

    18 Mar, 2025

    Inverter vs Non Inverter Washing Machine

    12 Mar, 2025

    Agitator vs Impeller Washing Machine | Which is Better?

    11 Mar, 2025

    Washing Machine Drum Types – Which is better?

    8 Mar, 2025

    Is Voltage Stabilizer Required for Inverter AC?

    6 Mar, 2025
    Add A Comment
    Leave A Reply Cancel Reply

    © 2025 VSCtimes
    • About US
    • Contact us
    • Privacy Policy

    Type above and press Enter to search. Press Esc to cancel.