As a seasoned HVAC expert with years of experience, I have witnessed the consequences of choosing the wrong size air conditioner for a home. Many homeowners make the mistake of assuming that square footage is the only factor to consider when selecting an air conditioner, but there are actually several other important variables that must be taken into account. In this article, I will explain why size matters when it comes to air conditioners and why it is crucial to seek professional help in determining the right size for your home.