HVAC Replacement Cost in 2026: Prices by System and Home Size
Typical cost
$6,500 – $16,000
full system, 1,000–1,500 sq ft home
A full HVAC replacement (central air + furnace) typically costs $6,500–$16,000 for a 1,000–1,500 sq ft home, rising to $9,100–$22,400 for homes over 3,000 sq ft. Central air alone runs $3,500–$10,000; a furnace alone runs $2,500–$8,000. Equipment makes up roughly 50–60% of the total; labor and permits make up the rest.
Cost breakdown
| Item | Typical cost |
|---|---|
| Central AC only | $3,500 – $10,000 |
| Furnace only | $2,500 – $8,000 |
| Full system (AC + furnace) | $6,500 – $16,000 |
| Heat pump (replaces both) | $4,500 – $14,000 |
| Permits & inspection | $100 – $500 |
| Ductwork repair (if needed) | $500 – $1,500 |
| Full ductwork replacement (if needed) | $2,000 – $5,000 |
What changes the price
- Home size and the tonnage/BTU capacity it requires — bigger homes need bigger, pricier equipment.
- System type: a heat pump replaces both heating and cooling in one unit, which can cost less than a separate furnace + AC in mild climates.
- Efficiency rating (SEER2 for cooling, AFUE for gas furnaces) — higher-efficiency equipment costs more upfront but lowers utility bills.
- Ductwork condition — homes needing duct repair or full replacement add $500–$5,000.
- Local labor rates and permit costs, which vary significantly by region.
- Removal and disposal of the old system.
Repair vs replace
As a general guideline contractors use, if a repair costs more than 30–50% of a full replacement, or the system is past 12–15 years old (AC) or 15–20 years old (furnace), replacement usually makes more financial sense than another repair.
How long it lasts
Central air conditioners typically last 12–17 years; gas furnaces typically last 15–20 years; heat pumps typically last 10–15 years, with coastal or high-humidity climates on the shorter end.
Quote checklist
- Manual J load calculation (not just 'same tonnage as before') to size the new system correctly.
- Exact equipment brand, model number and efficiency rating (SEER2/AFUE) — not just tonnage.
- Whether ductwork was inspected, and what (if anything) needs repair or replacement.
- Permit costs included or billed separately.
- Written warranty terms for both equipment (manufacturer) and labor (installer).
- Startup/commissioning and how refrigerant charge will be verified.
Financing & incentives
Some utilities and manufacturers offer rebates for high-efficiency equipment; these change frequently by state and utility, so verify current amounts directly with your utility or at energystar.gov before assuming a rebate applies.
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Is it cheaper to repair or replace a 15-year-old AC unit?
At 15 years, most AC units are near or past their typical 12–17 year lifespan. A major component failure (compressor, coil) at this age usually costs a meaningful fraction of a full replacement, so most contractors recommend replacing rather than sinking money into an aging unit — but get a repair quote first to compare against the ranges above.
Does a heat pump really replace both my furnace and AC?
Yes — a heat pump moves heat in both directions, cooling in summer and heating in winter, so it can replace a separate furnace and AC with one system. In very cold climates, some installations pair a heat pump with a backup furnace for the coldest days (a 'dual fuel' system), which adds cost.
Why do HVAC quotes vary so much between contractors?
The equipment itself (brand, tonnage, efficiency tier) usually explains most of the gap. Get at least two quotes with the same brand/model and efficiency rating specified so you're comparing the same job, not just a bottom-line number.
Related costs
Sources & methodology
Cost figures on this page are sourced from published contractor and industry pricing data, cross-checked where possible, and shown as planning ranges — not a quote. Actual price depends on an in-home or on-site estimate.
- HVAC Replacement Cost 2026: $3,800–$16,200 by System Type — HVACProjectCost.com, accessed 2026-09-16
Last reviewed: 2026-09-16