A 2,000-square-foot home needs an air conditioner of between 2.5 and 5.0 tons, equivalent to 32,000 to 60,000 BTUs. For most 2000 square foot homes, a 3-ton air conditioner will be enough to cool the entire house. Generally speaking, in temperate climates, 3 tons are enough to cool a 2,000 to 2,200 square foot home. However, in a hot climate with lots of sunlight, a 3-ton air conditioner may struggle to cool a house of this size.
Overall, a 3-ton air conditioner can comfortably cool a 1500 square foot room. For an entire house, a 3-ton air conditioner is usually sufficient for a 2000 square foot insulated house. At the upper limit, a 3-ton air conditioner can cool a home with an area of up to 2400 square feet. HVAC Basics (eBook): Learn the different types of HVAC components used in residential buildings and commercials.
The average cost of a 3-ton HVAC system will depend on a few factors, such as the brand of the system, the efficiency rating of the system, and the cost of installation. I am an HVAC professional with more than 7 years of hands-on experience, ranging from design and installation to service and maintenance.