As an HVAC expert with years of experience, I have seen firsthand the consequences of choosing the wrong size air conditioner for a home. Many homeowners make the mistake of assuming that the size of their home is the only factor to consider when selecting an air conditioner. However, there are several other crucial factors that must be taken into account to ensure optimal performance and energy efficiency. In this article, I will share my knowledge on how to calculate the correct air conditioner size for a 2000 square-foot house and why it is essential to get it right.