As a seasoned expert in the field of air conditioning, I have encountered numerous homeowners who struggle with determining the appropriate size of air conditioner for their 2000 square foot house. While many contractors may suggest a 4-ton unit, this may not always be the most accurate recommendation. In order to ensure optimal cooling and energy efficiency, it is crucial to take into account various factors such as insulation, ceiling height, number of windows, and climate when sizing an air conditioner for a 2000 square foot house. Let me guide you through the process of selecting the perfect size air conditioner for your home.