Air Conditioning Sizing Matters: Here's How To Pick The Right One

undefinedAn air conditioner is an essential device in the home that can keep your room cool and comfortable during the winters. However, air conditioning sizing can greatly impact your comfort and energy bills.

The size of the AC system determines not just the cooling efficiency of the air conditioner but also the amount of monthly energy bills. It’s important that you buy the right size of air conditioner for the home.

In this blog post, we’ll explain what this means. However, the best way to get air conditioning sizing advice is to contact the team at Tin Man for a free in-home estimate.

What is Air Conditioning Sizing, and Why Does it Matter?

An air conditioner size is measured in tons. Contrary to what you might expect, the tons do not convey weight of the cooling device, but its cooling ability. A 1-ton unit can generate about 12,000 British Thermal Unit (BTU) of cooling in an hour. A 2-ton unit can generate about 24,000 BTU in an hour, and so on.

Buying a higher size unit will result in greater cooling at the expense of greater energy bills. Also, a higher size unit will generally require frequent maintenance as compared to a small size unit. Typically, most homes have air conditioner in the range of 1-ton to 5-ton. An air conditioner over 5-ton is a commercial unit that is surplus to the requirements of most homes.

Now that you known what is meant by an air conditioner unit, let’s find out how to determine the right size unit for your home.

Determining the right size for your air conditioner

You can use to different methods to determine the right size of the air conditioner. The first method is to multiply the home square footage by 25, divide the resulting figure by 12,000, and then subtract 0.5.

So, if your house is 1,000 square feet, you will need to perform the following calculations to determine the right size of the air conditioner unit.

  1. 1,000 * 25 = 25,000
  2. 25,000 / 12,000 = 2.08
  3. 08 – 0.5 = 1.5

This means that if your house is 1,000 square foot, the ideal size of the air conditioner is 1.5 ton. Keep in mind that the above calculation is not for areas with hot and arid climates such as Southwest in which case instead of subtracting 0.5, you should add the number.

The second and easier method to select the size of the air conditioner is by looking at the chart below that was specified by Energy Star.

Area To Be Cooled (square feet) Capacity Needed (Ton)
100 up to 150 5,000
150 up to 250 6,000 (0.5 ton)
250 up to 300 7,000
300 up to 350 8,000
350 up to 400 9,000
400 up to 450 10,000
450 up to 550 12,000 (1 ton)
550 up to 700 14,000
700 up to 1,000 18,000 (1.5 ton)
1,000 up to 1,200 21,000
1,200 up to 1,400 23,000
1,400 up to 1,500 24,000 (2 ton)
1,500 up to 2,000 30,000
2,000 up to 2,500 34,000 (2.5 ton)

If you want more expert advice regarding the air conditioner, you can contact Tin Man Heating and Cooling. We serve Bowling Green, Findlay, and the surrounding areas.