How To Calculate Air Conditioner Size For Your House?

Each home is unique, and finding the correct air conditioner size is significant. In addition, the size of your air conditioner will be determined by different criteria other than just the size of your home.


For example, the requirements for AC installation Vancouver WA, will differ from that of Mesa. These criteria include roof type, ceiling height, window amount, insulation type, and wall heat transmission. 


Typically, the size suggested in the manufacturer’s specifications does not consider these aspects, so that it can be wrong. In addition, it can create a mess during installation, resulting in system damage.

What Should Be The Size Of My AC?

Air conditioner sizes do not refer to the actual dimensions of your unit. An AC unit’s size is measured in tonnes, which indicates how much heat it can remove in an hour.


For example, A typical AC unit weighs one tonne and cools 12000 BTU every hour (BTU is a unit of measurement for heat). The BTUs required to cool a living room or home office with a surface size of 100-300 square feet is around 5000-6000. So you should consider the size of your AC in tonnes before making a purchase.

Why Does The AC Size Matter?

Because size counts, a properly sized air conditioner will run a complete cycle and keep your home cooler for longer. If your air conditioner is too small, it must constantly run to keep your home cool throughout the summer. As a result of this, your power expenses will rise. 


When an air conditioner is enormous, it cools the space rapidly, which requires it to operate for an extremely brief time. When this happens, the unit cannot adequately remove humidity from the air, leading to mold and fungal issues. In such instances, frequent on-off cycling will also wear down your air conditioner faster.

How Can You Measure The AC Size Which Is Best For You?

To determine what size of an air conditioner you need for a room, multiply the room’s length by its breadth. Then, multiply it by 25 BTU to achieve sufficient cooling for the space in all weather conditions. For instance, a 15 feet long and 12 feet broad room is 180 square feet.


Now multiply 180 by 25 BTU per square foot to obtain 4500 BTU, the air conditioner’s minimum cooling capability. In this way, you can calculate the size of an AC to get maximum cooling and efficiency.

AC Size Calculator Chart

Various online calculators and charts are available to help you find the right size of AC that meets all your cooling needs.


If you have any further queries regarding AC replacement Vancouver WA, as well as air conditioner repair Vancouver WAand surrounding areas, then contact All Around Mechanical right away!