The answer to 'how much to replace system upgrade local' is that the cost can vary significantly depending on several factors. In general, a full HVAC system replacement or major upgrade can range anywhere from $5,000 to $15,000 or more for a typical home. The exact price will depend on the size of your home, the complexity of the installation, the efficiency rating of the new equipment, and other local factors.
Some key things that influence the cost include the type of HVAC system (e.g. furnace, heat pump, central air), the brand and model, whether any ductwork needs to be replaced, and the labor rates in your local area. Additionally, the age and condition of your current system, as well as any necessary permits or inspections, can also impact the final price.