The answer to 'how much to replace furnace in Chicago' is that the cost to replace a furnace can vary significantly depending on several factors. Typically, the cost to replace a furnace in the Chicago area can range from $3,000 to $7,000 or more, depending on the size of the home, the efficiency of the new furnace, and the complexity of the installation.
Factors that can influence the cost include the type of furnace (gas, electric, or heat pump), the brand and model, the size of the unit needed for your home, any necessary ductwork modifications, and the labor costs of the HVAC contractor. It's essential to get multiple local quotes to understand the range of pricing in your area.