Replacing an HVAC system typically costs $3,500 to $7,500 for central AC, and $6,000 to $12,000+ for a full furnace-and-AC replacement, depending on size, efficiency, and your home’s setup.
Replacing your HVAC system?
The only way to know your real price is a local quote. Get free quotes from trusted HVAC pros in your town.
What drives HVAC replacement cost
System size (tonnage), efficiency rating (SEER), whether you replace both heating and cooling, ductwork condition, and your local labor market all affect the total. High-efficiency systems cost more upfront but lower energy bills.
Repair vs. replace
If your system is 15+ years old and facing a major repair, replacement often wins long-term. Compare quotes for both. Get local HVAC quotes →
Frequently asked questions
How much does it cost to replace an HVAC system?
A new HVAC system typically runs from around $3,500 to $7,500 for central AC, and $6,000 to $12,000 or more for a full furnace-and-AC replacement, depending on size, efficiency, and your home. Get local quotes for an accurate figure.
How long does an HVAC system last?
Most HVAC systems last about 15 to 20 years with maintenance. If yours is in that range and needing repairs, replacement is often worth pricing out.
Does a new HVAC system add home value?
A new, efficient HVAC system can improve comfort, lower energy bills, and add appeal when selling, though it rarely returns its full cost directly.
Signs it is time to replace, not repair
If your system is 15 or more years old, needs frequent repairs, struggles to keep your home comfortable, or uses the outdated R-22 refrigerant, replacement usually makes more financial sense than another repair. Rising energy bills are another clue — modern high-efficiency systems can noticeably cut monthly costs.
How to save on a new HVAC system
Get at least three quotes, ask about manufacturer rebates and utility incentives, and consider financing spread against the energy savings. Right-sizing matters too — an oversized or undersized system wastes money and wears out faster, so make sure your installer does a proper load calculation rather than guessing.
Efficiency and long-term value
A higher-efficiency system costs more upfront but lowers your bills for years and tends to be more reliable. Weigh the SEER rating, warranty, and installer reputation — a great system installed poorly underperforms, so the pro you choose matters as much as the equipment.