How To Choose The Right AC Capacity Based On Your Room Size?


Not long ago, I was pondering in my compact study area about whether a 1 ton AC unit would suffice for a small space, such as a small bedroom. Currently, individuals are opting for a 1.5 ton air conditioner for their rooms because of effective sales presentations. That is the reason this idea came to me, prompting me to thoroughly investigate the topic and somewhat discover the solution.

A one ton inverter AC is ideal for a small room that is about. Area ranging from 100 to 120 square feet. Avoid direct sunlight, limit room occupancy to fewer than 3 people, and ensure that the room height is less than 12 feet. Additionally, a concrete roof is necessary, as well as avoidance of extreme climates and a preference for wooden furniture over metal furniture in the house.

AC Capacity Based On Your Room Size

Basic Factors To Consider While Buying An AC

A 1 ton AC is enough for what room size?

Certainly! Determining the appropriate tonnage for your room is crucial. Begin by calculating the area of your room in square feet.

Next, divide the area by 600 to obtain the fundamental capacity. For instance, if your room measures one hundred square feet, then:

100/600 = 0.167

Afterwards, factor in an additional 0.5 ton for every 5 people present in the room. This will give you the final required tonnage for your room.

Typically, a 0.8 ton AC is suitable for a 100 square feet room, making it ideal for smaller spaces.

Some additional factors to be added

Right AC Capacity Based On Your Room Size

Rooms Where Papers Or Books Are More

AC Capacity Based On Your Room Size

Essentially, the greater number of papers or books results in increased heat within the room. This means that a small room will need an air conditioner with a higher capacity to effectively cool the space.

In a room of one hundred square feet, where typically one ton of AC is sufficient, you would need to utilize a 1.5 ton AC unit. A room measuring 200 square feet that could be adequately cooled by a 1.5 ton AC would necessitate a 2 ton AC instead.

This demonstrates the need for a higher capacity AC in rooms with paper.

Type Of Roof On The House

Various houses in various locations have various styles of roofs. The roof can be a temporary or asbestos/false ceiling, or it can be a permanent concrete roof

If the ceiling of the house contains asbestos, the air conditioner will not function in a room measuring 120 square feet. A one ton air conditioner is suitable for cooling a space up to 100 square feet in size. Assuming that the windows are shut correctly and the doors are equipped with rubber seals at the bottom and sides.

Long Or Heighted House

A 1-ton AC won't effectively cool the room until the far end. One option is to place a Tower fan in the middle so that air can reach the corners of the room. Alternatively, you could opt for a 1.5 Ton AC.

Inverter Stabilizer Used Along With The AC

In urban areas without frequent power outages, stabilizers and inverters are unnecessary. Inverter or stabilizer will be needed for all cities apart from metropolitans.

How Much Area Does A 1 Ton AC Cover?

This is based on the BTU (British thermal units).

How Much Area Does A 1 Ton AC Cover

Here's a formula to help you calculate the suitable BTU for your AC:

Multiply the area of your room in square feet by 25 BTU to determine the BTU requirement for your room. For instance, if your room is 110 square feet, the calculation would be: 110 square feet x 25 = 2750 BTU.

However, there are additional factors to consider:

- If the room is shaded (no direct sunlight), reduce the total BTU by 10%.
- For each additional person in the room, add 600 to 700 BTU to the total.
- Kitchens tend to be hotter, so consider adding an extra 2000 to 3000 BTU to accommodate for this.

What if I already have a 1.5 ton AC in a small room?

At times, it occurs due to an effective sales presentation. Recently, this is what happened to me. The salesman recommended a 1.5 ton air conditioner for a typical room. Upon installation, I discovered that the air conditioner was exceeding the necessary capacity for my room. The room was, in fact, extremely cold.

What I did was to open the room next door, causing the air conditioner to cool both rooms.

Currently, the 1.5 ton air conditioner I bought is being utilized to cool two rooms simultaneously. The only thing to note is that I have ensured there are no airways on the exterior or any small leaks in the air.

Also Read: 10 most common electrical problems in your house and how to fix them

So what does this incident have to do with the topic of interest of this article?

In essence, this personal encounter convinced me that a 0.8 ton AC is sufficient for cooling a room with less than 4 people, indicating that a small room requires a 0.8 ton AC.

What if my room size is 12 by 12 or the room’s height is more?

A 0.8 to 1 ton AC is suitable for a room of 100-130 square feet. 1.5 ton AC is recommended for a room of 130-200 square feet. Rooms larger than 200 square feet may require a 2 ton AC, and rooms larger than 500 square feet may need multiple AC units.

How Efficient Is A 1 Ton AC For My Budget?

There have been numerous occasions when we had to choose between purchasing a smaller air conditioner or a larger one. It is a complete quandary when a smaller AC unit struggles to cool the room, resulting in higher electricity costs. On the flip side, exceeding the necessary AC capacity will lead to a higher electricity bill due to increased consumption. You need to ensure the air conditioner is the correct size for your room.

Also Read: What to do in case of water dripping from AC?

Frequently Asked Questions

Ans 1. First, find out your the area of you room. Then divide it by 600 to get the basic capacity. So, if you room is 100 sq. feet, the basic AC capacity required will be 0.167 tons (100 / 600).

Ans 2. Room size and power consumption For instance, a 1-ton window AC or a 1.5 ton split AC is an ideal choice for rooms measuring up to 150-160 sq ft. Star rating of AC essentially refers to how efficient the air conditioner is in converting electricity to cool air.

Ans 3. For a room sized around 100 to 120 square feet, a 1-ton capacity Air conditioner should be sufficient enough. For bigger rooms, you should buy a 1.5-ton or a 2-ton Air Conditioner. Avail NoBroker's AC Repair Services to Keep Your Air Conditioner Running Efficiently!

Ans 4. To avoid calculations, the rule of thumb says a 1 ton AC covers up to 100 square feet, 1.5-ton covers around 180 square feet and a 2 ton AC can cool up to 240 square feet of space.