The easiest way to calculate the size of a home's air conditioner is to use a rule of thumb. According to this common but somewhat inaccurate method, 1 ton of cooling capacity is needed for every few square feet of living space. While there is some controversy over the exact amount, one quantity that is frequently used is 600 square feet. A 2.5-ton unit, then, would theoretically fit in a house of 1500 square feet.
Each ton of air conditioner is designed to cool between 450 and 600 square feet. For optimal results from your HVAC investment, rely on reliable advice from an American Standard customer service dealer. Karie Fay earned a degree in psychology with a specialization in law from the University of Arkansas at Monticello. Understanding how the size of an air conditioner (AC) will affect the comfort of your home will help illustrate why bigger isn't always better at the world of air conditioning.