Room Size Vs AC Tonnage: Getting the Right Size for Your Room


Air conditioners, similar to television sets and refrigerator units have become indispensable in modern households. Because of the rising temperatures, alternative cooling solutions have become a necessity. Considering the fact that the market is riddled with a wide range of air conditioning units, consumers can now pick and choose an AC unit that fits their needs. From the AC’s tonnage, to the technology used, there is an air conditioner for every requirement.

That said, it is important to choose an AC according to the room size. Different room sizes require different cooling capacities. The purpose of an air conditioner is to bring down the room temperature, and the cooling capacity of an air conditioner plays an important role in determining how efficiently that can be done. So here are a few tips on how to choose air conditioner. Go through this and various aspects before buying an air conditioner for your home.

Cooling Capacity of an AC is Directly Proportional to Room Size

In simple terms, the bigger the size of the room, the higher should be the cooling capacity of an air conditioner. Ignoring the science behind calculating the ideal room size for specific cooling capacity of an AC, as a general rule, a 1-ton air conditioner is ideal for a small-sized room of around 100-120 square feet. For medium-sized rooms between 120-180 square feet, an air conditioner with a 1.5-ton capacity would suffice, while larger rooms require air conditioners with at least 2-ton capacity.

Considering you purchase an air conditioner with just 1-ton capacity for a medium-to-large sized room, the air conditioner works harder to reduce the indoor temperature, thereby consuming more energy. Furthermore, it also results in inefficient cooling.

What Affects the Cooling Capacity of an AC

Let us assume you stay on the top floor of your building, with a north-facing window or balcony. Considering your flat would receive more sunlight — and thus heat, you would require more efficient cooling, and should increase the AC’s capacity by at least 10 percent.

How to Choose an Air Conditioner

When you browse through the myriad of options available in the market, it is important to remember that air conditioners with higher star ratings are more energy efficient. Let us assume that you’ve narrowed your search down to two options: a split AC with 3-star energy rating, and a split AC with a 5-star energy rating, and both have the same cooling capacity. On the surface, the cost-effective option would be the 3-star rated air conditioner, as it comes with the same cooling capacity as the 5-star rated air conditioner.

However, the 3 star and 5 star ac difference lies in their energy efficient performance. While the 3-star rated air conditioner might prove to be cost-effective for the time being, in the long run, the 5-star rated air conditioner will save you more money by consuming less energy. 5-star rated air conditioners are the most energy efficient units available in the market, and purchasing a 5-star rated AC will substantially reduce the electricity costs, and will thus pay for itself in the long run.

ACs, similar to refrigerators and TV units are purchased for the long haul, which can be anywhere between 5-10 years. Thus, it makes more sense to invest in an air conditioning unit with higher energy rating now, and ensure greater energy savings over the next few years.

Leave a Reply

Your email address will not be published. Required fields are marked *