HVAC installation costs $5,000 to $11,000, including a new furnace and AC unit using the existing ductwork. Installing an HVAC system and new ductwork costs $7,000 to $16,000. Prices depend on the house size and the HVAC system size, type, brand, and efficiency.
- AC units with high Seasonal Energy Efficiency Ratio (SEER) ratings cost more up front but reduce your energy costs. The investment may pay for itself in energy savings over the life of the system.
- High-efficiency furnaces cost 30% to 100% more than standard-efficiency models but also reduce your energy costs.
- Optional features that will increase your total costs include a smart thermostat, an HVAC zoning system, or a whole-house air purifier installed directly within the ductwork.