Often times we have heard about 1 ton ac, 2 ton AC and many times we mistake the term “ton” as the weight of the air conditioner.
And yes “ton” as a weighing unit literally means 1000 kg but not in the case of AC.
If you are confused between what is the difference between 1 ton and 1.5 ton ac, which one to buy, etc,. then read further. You can also skip to the main section.
What is ton in ac?
“Ton” in AC refers to its power to cool a room similarly like “horsepower” in vehicle refers to its power to run. 1 Ton AC can remove 12,000 BTUS of heat per hour and 1.5 ton AC can remove 18,000 BTU of heat per hour.
BTU stands for British Thermal Unit.
To further simplify it a “1 ton” AC is equivalent to “1 ton of ice” that can cool a room for 24 hours without melting down completly.
Will 1.5 ton AC cool room faster?
1 Ton AC can remove 12,000 BTUs of heat per hour and 1. 5 ton AC can remove 18,000 BTUs of heat. 1.5 ton AC being more powerful in terms of cooling than a 1 ton AC will surely cool the same size room faster.
A 1.5 ton AC produces 50% more cooling than 1 a ton AC.
From the above analagy we can also see that 1.5 ton AC will remove more heat from a room and so will cool a room faster.
Read More: We have done thorough research on 3 star vs 5 star AC. Do read the bill difference section in it.
Which consumes more power?
Ofcourse a 1.5 ton AC will surely consume more power than a 1 ton AC as the former removes more heat per hour, that goes the same for electricity consumption.
An electronic device with higher wattage will surely consume more power that a lesser wattage device.
1 Ton = 3.5 kilo-watt
1.5 ton = 5.2 kolo-watt
But to correctly find that by how much both differ in electricity consumption we will also have to look at the “EER” or “ISEER” rating which gives us the energy efficiency of the appliance.
Below I have picked up few air conditioner randomly and calcualted the power consumption for each using a calculator.
Observation from the above table
- Power consumption for every 1.5 ton AC is higher than every 1 ton AC.
- Power consumption for the first and the last entry is almost same even though one is 1 ton and another is 1.5 ton AC.
This is possible becasue we are comparing and older model to a newer model. Newer models are more energy efficient, thanks to inverter technology.
So only “tonnage” is not sufficient for judging power consumption we need EER/ISEER rating also.
Read More: Check our list of best low power consuming AC in India.
How to choose between 1 and 1.5 ton for my room
To choose the right capacity AC or the right tonnage AC, there are many things to consider like room size, number of people using a room, room facing direct sunlight or not, are you living on the top floor.
Room size is the first factor to look for when deciding the tonnage.
Use the below table (Here room size is Length X Breadth and height of ceiling must be around 10 feet).
|Room Size (sq. feet)
|Size < 140
|Size > 140 & Size < 190
|Size > 190 & Size < 260
Once you have decided the “ton” using the above table.
Increase the tonnage if
- Your room gets direct sunlight
- You live on the top floor of your building
- Several people(4-6) sleep inside the room
This is because sunlight will heat up the room and so the AC will have to do more work to counter it.
- LG 1 Ton AC (Latest Innovations)
- Lloyd 1 Ton AC (Budget Friendly)
- Samsung 1.5 Ton AC
You can check the above links or our split ac under 30,000 list. Do make sure to check the servicing of brand in your region.
How much area 1 ton AC covers
1 Ton AC is suitable for room size of 100-140 square feet. Usually the height of ceiling in our rooms is around 10 feet, so a room with dimensions(LxB) like 10×10, 12×12, 14×10, 9×14 can be sufficiently cooled with a 1 ton AC.
Can I use 1.5 ton AC in small room
It is better to use the right capacity AC according to the room size. You can use a bigger capacity AC in a small room, this will result in faster cooling of the room but the AC will also consume more electricity.
But you should prevent yourself from using an undersized air conditioner as it will fail to cool the room to the desired temperature even after running for long.