The answer to how much it costs to replace a furnace in Illinois can vary significantly depending on several factors. In general, the typical range for a full furnace replacement in Illinois is between $3,000 to $8,000, with the average cost being around $5,500.
The key factors that influence the cost of a furnace replacement include the size and efficiency of the new unit, the complexity of the installation, the brand and model selected, and any necessary ductwork modifications. Homeowners in Illinois should expect to pay more for higher-efficiency models or larger homes that require more powerful furnaces. Additionally, the cost can be impacted by the accessibility of the furnace location and any necessary electrical or gas line work.