The answer to 'how much does AC cost in Illinois' is that the cost of an air conditioning system can vary widely depending on several factors. Generally, the cost for a new AC unit and installation in Illinois can range from around $3,000 to $10,000 or more, depending on the size of your home, the efficiency of the unit, and the complexity of the installation.
Some key factors that influence the cost include the size and capacity of the AC unit needed, the type of system (central air, ductless mini-split, etc.), the brand and efficiency rating, the complexity of the installation, and any necessary ductwork or electrical work. Homes with existing ductwork may have lower installation costs compared to homes that need new ductwork installed.