How Much Does It Cost to Replace an HVAC System?
$7,000 – $20,000
National average: $13,000 installed
Estimate your cost
Adjust the options for a tailored ballpark — figures and the regional adjustment are approximate estimates. Always confirm with local quotes before you budget.
When your heating and cooling system gives out, the replacement quote can be a shock. A full HVAC replacement runs $7,000 to $20,000 in 2026, with a national average around $13,000 — and where you land depends on the system type, efficiency, and the state of your ductwork.
What you’re paying for
A “full system” usually means a new outdoor AC condenser, an indoor furnace or air handler, and a matched evaporator coil, plus labor, a thermostat, and permits. The equipment is roughly half the cost; the rest is skilled labor and any ductwork or electrical work your home needs.
Cost by system type
Not every “HVAC replacement” is the same job. Swapping just the AC is very different from replacing a full split system or switching to a heat pump. The table below breaks down typical installed pricing by what you’re actually replacing.
Where quotes diverge
Two homes the same size can get very different quotes. The swing factors are efficiency rating (a high-SEER2 system can add several thousand dollars), ductwork condition (sealing or replacing leaky ducts adds $2,100–$4,000), and fuel type. Always compare quotes for the same equipment tier so you’re comparing apples to apples — a “cheap” bid often uses a lower-efficiency unit.
The incentive change for 2026
If you were counting on a federal tax credit, note that the credits for high-efficiency HVAC equipment and heat pumps expired at the end of 2025. Many states and utilities still run rebate programs, though, and they can be substantial — ask your installer which local programs and qualifying models apply before you choose equipment.
How to save on HVAC replacement
- Get three itemized quotes and match equipment specs across them.
- Choose mid-range efficiency unless you’re in an extreme climate.
- Insist on a Manual J sizing calculation — oversizing is common and wasteful.
- Chase state and utility rebates now that federal credits have ended.
- Replace in the off-season (spring or fall) when installers are less busy.
| Component | Typical range | Notes |
|---|---|---|
| AC condenser / outdoor unit | $2,500 – $6,000 | — |
| Furnace or air handler | $2,000 – $5,000 | — |
| Evaporator coil | $600 – $1,500 | — |
| Installation labor | $1,500 – $4,000 | — |
| Ductwork modifications | $2,100 – $4,000 | If ducts need sealing or replacement |
| Thermostat & permits | $200 – $800 | — |
| Option | Typical range | Notes |
|---|---|---|
| AC + gas furnace (split system) | $7,000 – $16,000 | The most common setup |
| Heat pump system | $6,000 – $20,000 | — |
| AC only (condenser + coil) | $4,000 – $12,000 | — |
| Furnace only | $3,000 – $12,000 | — |
| Add/replace ductwork | $2,100 – $4,000+ | — |
What affects the price
- System size (tonnage) Bigger homes need higher-capacity equipment, which costs more to buy and install.
- Efficiency rating (SEER2) High-efficiency units cost more upfront but cut monthly bills; mid-range is the value sweet spot for most homes.
- Ductwork condition Replacing or sealing leaky ducts adds $2,100–$4,000 but is sometimes unavoidable.
- Fuel type Gas furnace plus AC, all-electric, or a heat pump system each carry different price tags.
- Brand & warranty Premium brands and longer labor warranties raise the quote.
- Region & season Labor rates vary by market, and off-season (spring/fall) installs are often cheaper.
Frequently asked questions
- How long does an HVAC system last?
- A well-maintained system lasts 15–20 years. If yours is past 15 and needs a major repair, replacement is usually the smarter money.
- Should I replace the AC and furnace together?
- Usually yes. Matching new components run more efficiently, qualify for better warranties, and you pay one labor charge instead of two.
- What size HVAC system do I need?
- Sizing is based on a Manual J load calculation, not square footage alone. An oversized system short-cycles and wastes energy, so insist your contractor runs the calc.
- Are there rebates for high-efficiency HVAC in 2026?
- Federal tax credits for high-efficiency HVAC and heat pumps expired at the end of 2025. Many state and utility rebate programs continue — ask your installer which local programs and models qualify.
- Is a high-SEER2 system worth the extra cost?
- In hot climates with heavy cooling use, the energy savings can justify a higher-SEER2 unit. In mild climates, a mid-efficiency system usually offers the best payback.
- How long does installation take?
- A straightforward swap is typically a 1–2 day job. Adding or rerouting ductwork, or changing fuel types, can extend it to several days.
- What are the signs I need to replace my HVAC?
- Rising energy bills, frequent repairs, uneven temperatures, age past 15 years, and a system using phased-out refrigerant all point toward replacement.
How we estimate: ranges reflect typical U.S. pricing for materials and professional installation, compiled and cross-checked against the current (2026) industry sources listed below (see our data & methodology). Your actual cost depends on your location, project size, material grade, and local labor rates — always get multiple written quotes before you commit.
Sources
Cost ranges on this page were checked against current (2026) data from these industry sources: