heating and air conditioning

What is the correct size air conditioner?

Air conditioners come in a variety of shapes and sizes. Some fit through the window and are designed to cool a single room, others are called central units and they are designed to cool the entire home. Air conditioning systems in Gainesville VA should be sized correctly, neither too small or too big. How do you determine the proper size unit for your specific application? The first step is to determine the size of the area that you want cooled.

Calculating the area:

This is a simple calculation, the area is the length of the room times the width of the room. The resulting answer is the area in square feet. To allow for plenty of cooling, the experts use a factor of 25 BTU per square foot. This is a good number regardless of the weather; hot, rainy, sunny, it does not matter.

So if you had a room which was 15 feet long and 12 feet wide the area is 180 square feet, when this area is multiplied by 25 BTU per square foot, the answer is 4500 BTU. That is the cooling capacity that you need for that area.

Can it be smaller or bigger?

Although the factor of 25 BTU is arbitrary, it is a number which has been found to be optimum. If the air conditioning systems in Gainesville VA that you install are too small, the unit will run continually just trying to keep up with the task. The power consumption will increase considerably and the unit may never really cool the room properly.

Conversely, an air conditioner can be too large. In air conditioning there is no truth to the statement “bigger is better.” There is no denying that an air conditioner which is oversized will cool the room quickly, but in the process you will be defeating half the purpose of an air conditioner. An air conditioner not only cools, it dehumidifies. If the unit does not run long enough, the moisture in the air will not be properly removed. The satisfaction that you get from feeling cool air across your body will be dampened quickly when you realize your skin is damp. You will get the chills; goose bumps will form on your skin because of the high level of moisture in the air.

As well as this, the unit will cycle on and off repeatedly. This is not good for the mechanics of the air conditioner nor is it good for your power bill. When motors start up initially there is an inrush of current, you will be paying for this for no reason.

So, when you are shopping for air conditioning systems in Gainesville VA, just remember the formula. Air conditioners come in many sizes to suit your exact needs.

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