The answer to 'how much to replace system upgrade in my area' is that the cost can vary significantly depending on several factors, but typically ranges from $3,000 to $10,000 or more. The specific cost for your home will depend on the size of your home, the efficiency and capacity of the new system, the complexity of the installation, and your local labor and material costs.
Some key factors that influence the cost include the type of HVAC system (e.g. central air, heat pump, furnace), the brand and model, the required ductwork modifications, and any necessary electrical or structural changes. Additionally, the age and condition of your existing system, as well as your local climate and energy costs, can also impact the overall replacement price.