The answer to 'how much to replace ductless system' is that the cost can vary significantly depending on several factors. Typically, the cost to replace a ductless HVAC system can range from $3,000 to $15,000 or more, depending on the size of your home, the type of system, and the complexity of the installation.
Some key factors that influence the cost include the brand and model of the ductless system, the number of indoor and outdoor units needed, the difficulty of the installation (e.g., if structural work is required), and the labor rates in your local area. It's essential to get multiple quotes from licensed HVAC contractors in your area to get an accurate estimate for your specific needs.