The answer to 'how much to replace installation' is that the cost to replace an HVAC system installation can vary significantly depending on several factors. In general, you can expect to pay anywhere from $3,000 to $12,000 or more to replace a complete HVAC system, including the indoor and outdoor units as well as the ductwork and other components. The exact cost will depend on the size and complexity of your home, the efficiency of the new system, and the labor required for the installation.
Some key factors that influence the cost of HVAC system replacement include the type of system (e.g., central air, heat pump, furnace), the size and configuration of your home, the accessibility of the work area, and the expertise of the HVAC contractor. It's important to get multiple quotes from local, reputable HVAC companies to ensure you get the best value for your investment.