How much does hvac system replacement cost?
Replacing a full HVAC system (furnace + AC, or a heat pump) is a major mechanical job. Cost is driven by system size (tonnage), efficiency rating (SEER), and whether ductwork needs work.
| Typical range | $7,000 – $16,000 |
| Most common | $11,000 |
| Priced | full system |
| DIY-friendly? | No — best left to a licensed pro |
What changes the price of hvac system replacement
- System size (tonnage) for your home
- Efficiency rating (SEER/AFUE) — higher is pricier
- Furnace + AC vs. heat pump
- Ductwork condition and modifications
Estimate your cost
Adjust the quality and scope, or compare with other projects.
Full typical range for this project. Adjust the quality/scope for a tighter estimate. The only way to know your real price is to get quotes from local contractors.
- ›System size (tonnage) for your home
- ›Efficiency rating (SEER/AFUE) — higher is pricier
- ›Furnace + AC vs. heat pump
- ›Ductwork condition and modifications
National ballpark ranges for the US. Not a quote — actual prices vary by region, home and contractor.
HVAC system replacement cost — frequently asked questions
How much does it cost to replace an HVAC system?
A full HVAC replacement typically runs $7,000–$16,000, around $11,000 in the middle. High-efficiency systems, larger homes, and ductwork changes push it higher.
How much to replace both AC and furnace?
Replacing the air conditioner and furnace together commonly runs $8,000–$16,000 — often cheaper as a package than doing them separately.
Related project costs
This is general US cost information, not a quote. Actual prices depend on your region, home, materials and contractor — always get quotes from licensed local pros before you commit.