The answer to 'how much to replace central air' is that the cost to replace a central air conditioning system can vary significantly depending on several factors. Typically, the total replacement cost for a central AC system can range from around $3,000 to $10,000 or more, depending on the size of your home, the efficiency rating of the new system, any necessary ductwork modifications, and the complexity of the installation.
Some key factors that influence the cost include the size of the system needed (measured in tons), the SEER (Seasonal Energy Efficiency Ratio) rating, the brand and model, labor costs in your local area, and any additional electrical or structural work required. Higher-efficiency systems with a SEER rating of 16 or above will be on the higher end of the cost range. It's important to get quotes from multiple HVAC contractors in your local area to get the best price for your specific home and needs.