How Much Does HVAC Replacement Cost in 2026?
National ranges, equipment + labor, full replacement · Pricing data updated · Reviewed annually
Replacing the HVAC in a typical ~1,800 sq ft home — a 3-ton system with usable existing ductwork — costs $5,500 to $13,000 for a matched furnace + AC swap, around $8,000 for most jobs. A furnace alone runs $4,000 to $10,500 and a ducted heat pump $6,000 to $14,000. The full spectrum is wide — a small AC-only swap in a low-cost metro can start near $2,500, while a whole-home gut-and-replace with new ductwork in a high-cost metro can exceed $36,000.
Four decisions set most of the price: which system you install, how big your home is (tonnage), whether the ductwork gets reused or replaced, and where you live. The tables below break the national ranges down along each axis, and the interactive estimator lets you combine them — then hand off to the free HVAC BTU calculator to size the system properly before you call for bids.
HVAC replacement cost by system type
The starting point is what you're installing. These are whole-project installed ranges — equipment plus labor — for the reference 3-ton / ~1,800 sq ft home with usable existing ductwork and baseline efficiency (80% AFUE / 14.3 SEER2). The base already covers a basic thermostat, initial refrigerant charge, a basic permit, startup, and haul-away of the old equipment.
| System | Installed (3-ton home) | Notes |
|---|---|---|
| Gas furnace only | $4,000 – $10,500 | Replace the furnace, reuse existing ductwork and AC |
| Central AC only | $3,500 – $9,500 | Replace the condenser + coil, reuse ductwork and furnace |
| Furnace + AC (split system) | $5,500 – $13,000 | Full split-system swap — the classic "new HVAC system" |
| Air-source heat pump (ducted) | $6,000 – $14,000 | Ducted heat pump replacing a furnace + AC |
| Ductless mini-split (whole-home) | $6,500 – $15,000 | Multi-zone ductless — no ductwork needed |
| Full system + new ductwork | $8,000 – $20,000 | Gut-and-replace: equipment plus all-new ducts |
HVAC cost by home size and system
Reused-duct replacement, national averages. Each cell is a low-to-high range; real projects cluster toward the middle. Size is expressed as approximate tonnage, which scales with home square footage — but the accurate way to size equipment is an ACCA Manual J load calculation, not square footage alone (oversizing is the most common and costly sizing error).
| Home size | Gas furnace only | Central AC only | Furnace + AC (split system) | Air-source heat pump (ducted) | Ductless mini-split (whole-home) | Full system + new ductwork |
|---|---|---|---|---|---|---|
| Small (~1,000 sq ft)2 ton | $3,000 – $8,500 | $3,000 – $8,000 | $4,500 – $10,500 | $5,000 – $11,500 | $5,500 – $12,500 | $6,500 – $16,500 |
| Average (~1,800 sq ft)3 ton | $4,000 – $10,500 | $3,500 – $9,500 | $5,500 – $13,000 | $6,000 – $14,000 | $6,500 – $15,000 | $8,000 – $20,000 |
| Large (~2,500 sq ft)4 ton | $4,500 – $12,500 | $4,000 – $11,000 | $6,500 – $15,500 | $7,000 – $16,500 | $7,500 – $17,500 | $9,500 – $23,500 |
| Extra large (~3,500 sq ft)5 ton | $5,000 – $14,500 | $5,000 – $13,000 | $7,500 – $18,000 | $8,500 – $19,500 | $9,000 – $20,500 | $11,000 – $27,500 |
Estimate your HVAC replacement
Combine system, home size, region, and the real-world add-ons to see your range update live. The base is a standard reused-duct, baseline-efficiency quote — toggle new ductwork, an efficiency upgrade, zoning, or the electrical/gas/asbestos items to see what each adds before you commit.
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What size HVAC system do I need?
A rough rule of thumb is about one ton of cooling per 400–600 sq ft, or ~20 BTU/sq ft for AC; furnaces run 30–60 BTU/sq ft depending on climate. Use this only as a first estimate — the correct method is an ACCA Manual J load calculation that accounts for insulation, windows, climate zone, ceiling height, and duct losses.
| Home size | Approx. cooling tonnage | Approx. furnace BTU |
|---|---|---|
| ~1,000 sq ft | ~2 ton | ~40,000–60,000 BTU |
| ~1,800 sq ft | ~3 ton | ~60,000–90,000 BTU |
| ~2,500 sq ft | ~4 ton | ~90,000–110,000 BTU |
| ~3,500 sq ft | ~5 ton | ~110,000–130,000 BTU |
Size it properly first with the free HVAC BTU calculator, furnace size calculator, AC size calculator, or Manual J calculator.
Add-on and exclusion costs
A standard quote covers equipment, labor, a basic thermostat, initial charge, a basic permit, startup, and haul-away. These are the items that ride on top — some are common upgrades, others (panel, gas line, asbestos) are almost never in the base HVAC bid and get billed separately.
| Item | Typical range | Notes |
|---|---|---|
| Old equipment removal & disposal | $100 – $350 | Usually included in the base quote |
| Permit & inspection | $75 – $1,500 | $75–$600 change-out; $250–$1,500 with ductwork |
| Refrigerant line-set replacement | $200 – $900 | — |
| Smart thermostat (installed) | $140 – $400 | — |
| Zoning system | $1,500 – $8,500 | ~$3,000 typical |
| New ductwork (whole-home) | $2,100 – $6,600 | — |
| Electrical panel upgrade to 200A | $520 – $2,200 | Excluded from base HVAC quotes |
| Dedicated 240V circuit | $175 – $800 | Heat pump / mini-split |
| Gas-line install / modification | $120 – $2,000 | — |
| Asbestos abatement | $462 – $6,100 | Pre-1980s duct/pipe insulation |
What the add-ons do to a typical estimate
Priced against the default configuration — a furnace + AC combo for a 3-ton, ~1,800 sq ft home at the national average. On a bigger home or higher-end system each adds proportionally more.
| Add-on | What's involved | Adds |
|---|---|---|
| Replace / add ductwork | New ducts instead of reusing existing (adds ~$2,100–$4,000 for a 2,000 sq ft home). Not needed if you pick "Full system + new ductwork." | +$1,000 – $7,000 |
| High-efficiency upgrade | Step up to 90–96% AFUE and/or 16–18 SEER2 equipment | +$500 – $4,500 |
| Add a zoning system | Motorized dampers + zone controls (~$1,500–$8,500) | +$500 – $9,000 |
| Replace refrigerant line-set | New line-set rather than reusing existing (~$200–$900) | +$0 – $1,500 |
| Electrical panel / 240V circuit | Dedicated 240V circuit or 200A panel upgrade — common for heat pumps and mini-splits (~$520–$2,200). Excluded from most base quotes. | +$500 – $4,000 |
| Gas-line install / modification | Run or resize a gas line (~$120–$2,000). Excluded from most base quotes. | +$0 – $2,000 |
| Asbestos abatement | Remove old asbestos duct/pipe insulation in pre-1980s homes (~$462–$6,100). Excluded from most base quotes. | +$500 – $7,000 |
Does high-efficiency equipment pay off?
Efficiency is rated by AFUE (furnaces) and SEER2 (AC / heat pumps). Higher ratings cost more up front but cut operating cost — the payback depends heavily on your climate and energy rates. In cold climates a 96% AFUE furnace or cold-climate heat pump often pays back in 5–10 years; in mild climates the baseline tier is frequently the better financial call.
| Furnace (AFUE) | |
|---|---|
| 80–89% AFUE (baseline)Federal minimum in many regions | $3,800 – $6,200 |
| 90–95% AFUE (mid) | $5,200 – $8,800 |
| 96%+ AFUE (high)~$1,000–$2,500 premium over baseline; saves ~16–20% on heating | $6,000 – $10,500 |
| AC / heat pump (SEER2) | |
|---|---|
| 14.3 SEER2 (baseline)2026 federal minimum (South) | $3,800 – $5,500 |
| 16 SEER2 (mid)+$800–$1,500; saves ~$120–$180/yr in hot climates | $4,500 – $7,200 |
| 18+ SEER2 (high)+$1,800–$3,500 over baseline | $6,000 – $10,000 |
Ductwork: reuse, repair, or replace
Reusing serviceable ducts is the single biggest way to keep the cost down. Replace them only if they're over ~20 years old, badly leaky (more than ~15%), or undersized for the new equipment. Cost depends on material and how much run you need:
| Duct material | Per linear ft |
|---|---|
| Flex duct | $10 – $25 |
| Duct board | $25 – $40 |
| Sheet metal | $35 – $60 |
| Whole-home scope | Total |
|---|---|
| New ductwork (whole-home retrofit) | $2,400 – $6,600 |
| Duct replacement (2,000–2,500 sq ft) | $2,800 – $5,600 |
| Full duct replacement (2,000–3,000 sq ft)~$5,800 median | $3,500 – $12,000 |
Cost by region
Equipment is priced almost identically nationwide, so the regional spread is labor, permit structure, and state energy codes. The same 3-ton furnace + AC combo swap:
| Region | Typical metros | Furnace + AC | Heat pump |
|---|---|---|---|
| Lower-cost metro | Much of the South, Midwest, Mountain West | $4,500 – $11,000 | $5,000 – $12,000 |
| National average | Most metros | $5,500 – $13,000 | $6,000 – $14,000 |
| High-cost metro | Coastal CA, NYC, Boston, Seattle, CT | $7,000 – $17,000 | $8,000 – $18,000 |
Repair or replace?
The 50% rule: If a single repair exceeds 50% of a new installed system, replace it.
The $5,000 rule: Multiply system age (years) × repair cost. If the result exceeds 5,000, replace it.
Age thresholds: AC / heat pumps last ~10–15 years; furnaces ~15–20 years.
| Common repair | Typical cost |
|---|---|
| Capacitor (most common) | $150 – $400 |
| Contactor / fan motor | $250 – $550 |
| Refrigerant leak repair | $400 – $1,500 |
| Blower motor | $400 – $800 |
| Heat exchanger | $1,000 – $3,000 |
| Compressorup to $3,500 | $1,100 – $2,500 |
The R-410A refrigerant transition (why prices rose)
Under the EPA AIM Act, new residential AC and heat-pump equipment could no longer use R-410A (GWP 2,088) after Jan. 1, 2025. New systems use A2L "mildly flammable" refrigerants — R-454B (most brands) or R-32 (Daikin / Goodman / Amana) — which require leak-detection sensors. This raised homeowner equipment prices roughly 8–10% (2025–2026), a premium now baked into current quotes. Existing R-410A systems stay legal to run and service, but they cannot be retrofitted to A2L — replacement is the only path — and R-410A recharge costs have climbed sharply (some markets $25–$45/lb), which tips aging systems toward replacement.
Tax credits and rebates in 2026
Expired for 2026 installs
- Federal 25C Energy Efficient Home Improvement Credit: EXPIRED for equipment placed in service after Dec. 31, 2025 (One Big Beautiful Bill Act; IRS FS-2025-05). Previously up to $3,200/yr ($2,000 heat pumps, $1,200 other).
- Federal 25D Residential Clean Energy Credit (30%): Terminated Dec. 31, 2025 — covered geothermal heat pumps.
Still available
- IRA HOMES & HEEHRA/HEAR rebates: State-administered point-of-sale rebates survived OBBBA — active in ~23 states as of early 2026. HEEHRA up to $14,000/household (income-qualified); HOMES up to $8,000 (all incomes). Funding runs until spent or Sept. 30, 2031; some state allocations (e.g. California single-family) are already reserved.
- Utility rebates: $200–$1,000+ for qualifying high-efficiency units (typically 16 SEER2+). Check DSIRE.org.
Many contractor and retailer pages still advertise the old "30% federal credit through 2032." For equipment placed in service in 2026, that credit no longer applies — verify any incentive against your state program and DSIRE.org before budgeting on it.
What these ranges don't include
National ranges, equipment + labor combined, full replacement. Reference is a 3-ton / ~1,800 sq ft home with usable existing ductwork and baseline efficiency (80% AFUE / 14.3 SEER2). Base ranges include a basic thermostat, initial refrigerant charge, a basic permit, startup, and haul-away. Excludes electrical panel upgrades, gas-line work, asbestos abatement, and structural modifications unless toggled on.
- Electrical panel upgrades and new dedicated 240V circuits
- Gas-line installation or resizing
- Asbestos abatement (pre-1980s duct / pipe insulation)
- Structural modifications to fit new equipment
- Whole-home ductwork when reusing serviceable ducts
- Extended warranties and annual maintenance plans
- Post-install drywall / paint repair around registers and chases
Where these numbers come from
Ranges reconcile national published data — HomeAdvisor, HomeGuide, Angi, and Forbes Home installed medians; HVAC.com, ConsumerAffairs, and PickHVAC per-ton figures; Modernize and manufacturer heat-pump ranges; and IRS, EPA, and trade-association sources for the tax-credit and refrigerant changes — bracketed by roughly ±30–40% to absorb regional, supply-chain, and contractor-tier variability. Where sources disagreed by more than 40% — almost always a reused-duct swap versus a gut-and-replace, or a manufacturer's worst-case scope — the like-for-like reused-duct replacement anchors the base and the higher-scope cases surface through the add-on toggles. Every figure is rounded to the nearest $500 on purpose: a national estimate quoted to the dollar is false precision. The model is reviewed annually; this page was last computed from data updated . For your own project, the only numbers that matter more than these are the ones in three written bids from licensed local contractors — normalize each by scope before comparing totals.
Size your system before you get quotes
The most expensive HVAC mistake is buying the wrong size. The free HVAC BTU calculator estimates the heating and cooling load for your home so you can check a contractor's tonnage against a real number — no signup.
Open the HVAC BTU Calculator →Frequently Asked Questions
How much does it cost to replace an HVAC system in 2026?
For a typical ~1,800 sq ft home (a 3-ton system) with usable existing ductwork, a full furnace + AC replacement runs $5,500 to $13,000, likely around $8,000. A furnace alone runs $4,000 to $10,500 and central AC alone $3,500 to $9,500. A gut-and-replace with all-new ductwork runs $8,000 to $20,000. Equipment is priced nearly the same nationwide — the spread is labor, permits, efficiency tier, and ductwork scope. Size your system first with the free HVAC BTU calculator.
How much does it cost to replace a furnace and AC together?
Replacing both as a matched split system runs $5,500 to $13,000 for a 3-ton, ~1,800 sq ft home with reused ducts — cheaper than doing them separately because the crew mobilizes once and shares the line-set and electrical work. Bundling typically saves $1,000–$2,000 in labor versus two separate visits. Bigger homes and high-efficiency equipment push toward the top of the range.
Is a heat pump more expensive than a furnace and AC?
Somewhat. A ducted air-source heat pump for a 3-ton home runs $6,000 to $14,000 versus $5,500 to $13,000 for a furnace + AC combo — the heat pump does both heating and cooling in one system. Cold-climate models cost roughly 10–20% more upfront, and many heat pumps need a dedicated 240V circuit or panel work that a gas furnace doesn't. Operating cost, local electricity rates, and available rebates usually decide which one pencils out.
How much does a ductless mini-split cost?
A whole-home multi-zone mini-split runs $6,500 to $15,000 for coverage comparable to a 3-ton ducted system. Single-zone setups are much cheaper (roughly $2,000–$6,000 installed for one indoor head), and each added zone raises the total — zone count is the biggest driver. Mini-splits skip ductwork entirely, which is why they're the go-to for additions, older homes with no ducts, and room-by-room control.
Does new ductwork add a lot to the cost?
Yes — it's one of the biggest swing factors. Reusing serviceable ducts keeps you in the base ranges; replacing or adding ductwork adds roughly $1,000–$7,000 on a combo system (about $2,100–$4,000 for a 2,000 sq ft home). Only replace ducts if they're over ~20 years old or a test shows more than ~15% leakage; if they're under 10 years old and sound, reuse them and save the money.
Is there still a federal tax credit for a new HVAC system?
No — not for 2026 installs. The federal 25C Energy Efficient Home Improvement Credit (up to $3,200/yr, including $2,000 for heat pumps) expired for equipment placed in service after December 31, 2025 under the One Big Beautiful Bill Act (IRS Fact Sheet FS-2025-05). Many contractor sites still incorrectly advertise "30% through 2032" — that's outdated. What survived: state-administered IRA HOMES and HEEHRA rebates (active in ~23 states) and utility rebates ($200–$1,000+ for high-efficiency units). Check DSIRE.org for your state.
Why do new HVAC systems cost more than they used to?
Part of it is the refrigerant transition. Since January 1, 2025, new AC and heat-pump equipment can no longer use R-410A — it's been replaced by A2L "mildly flammable" refrigerants (R-454B or R-32) that require built-in leak sensors. That raised homeowner equipment prices roughly 8–10%, a premium now baked into current quotes. Existing R-410A systems remain legal to run and service, but they can't be retrofitted to the new refrigerants, and R-410A recharge costs have climbed sharply — which increasingly tips aging systems toward replacement.
When should I repair my HVAC instead of replacing it?
Two rules of thumb: the 50% rule (if a single repair exceeds 50% of a new installed system, replace) and the $5,000 rule (multiply system age in years × repair cost; over 5,000 means replace). AC and heat pumps last ~10–15 years, furnaces ~15–20. A $200 capacitor on an 8-year-old unit is an easy fix; a $2,000 compressor or heat exchanger on a 14-year-old R-410A system almost always favors replacement. National ranges, equipment + labor combined, full replacement. Reference is a 3-ton / ~1,800 sq ft home with usable existing ductwork and baseline efficiency (80% AFUE / 14.3 SEER2). Base ranges include a basic thermostat, initial refrigerant charge, a basic permit, startup, and haul-away. Excludes electrical panel upgrades, gas-line work, asbestos abatement, and structural modifications unless toggled on.