HVAC System Replacement Cost in 2026
A full HVAC replacement costs most US homeowners $5,000–$12,500 in 2026, averaging around $7,500 for a like-for-like swap. Bigger homes, new ductwork and high-efficiency equipment push real projects toward $11,000–$14,000 — knowing which band you are in is the whole ballgame.
Quick answer: what it costs in 2026
| Full HVAC system replacement (installed) | Low | Typical | High |
|---|---|---|---|
| Standard like-for-like replacement | $5,000 | $7,500 | $12,500 |
| Central AC only (average ≈ $5,978) | $3,900 | $6,000 | $8,100 |
| New ductwork added (2,000 sq ft home) | +$2,100 | +$3,000 | +$4,000 |
The typical band is a like-for-like replacement using existing ductwork. If your project also replaces the furnace and AC together with any ductwork changes, budget toward the high column and beyond — combined projects commonly total $11,000–$14,000.
Estimates based on published ranges from Angi, HomeAdvisor, Fixr and the Cost vs. Value Report, checked November 9, 2026. Your local price will differ — see the regional table below and our research method.
HVAC quotes are confusing because 'the system' can mean three different things: just the outdoor AC unit, the AC plus the indoor coil and furnace, or all of that plus ductwork. A $5,000 quote and a $13,000 quote for the same house are often not the same job at all — which is why this guide prices the job in layers.
The headline figures come from Angi's HVAC replacement data (average $7,500; typical range $5,000–$12,500) and Modernize's 2026 cost calculator, which is built from 56,000 completed projects and shows a national range of $6,224–$11,434 with an average of $8,829 for a 2,000–2,500 sq ft home. The two datasets use slightly different project mixes, which is why our typical band spans both.
One important 2026 change: the federal 25C energy tax credit that once covered part of an efficient system's cost is no longer available for equipment placed in service after December 31, 2025. Some installers' old web pages still advertise it. Budget on the full price, and treat any state or utility rebate you confirm as a bonus.
What the price normally includes
- Removal and disposal of the old equipment
- New outdoor unit (condenser or heat pump) and indoor coil/air handler or furnace
- Refrigerant lines, condensate drain, thermostat and basic electrical connections
- Startup, charging and commissioning of the system
- Building/mechanical permit in most jurisdictions (commonly $250–$400)
- Standard parts and labour warranties (terms vary by installer and brand)
HVAC replacement cost by system type
| System | Typical installed range | Best for | Notes |
|---|---|---|---|
| Central AC only | $3,900–$8,100 | Homes with a newer furnace | Average ≈ $5,978 (Angi) |
| Gas furnace only | $3,800–$7,500 | Heating-only replacement | High-efficiency (AFUE 96%+) at the top of the range |
| AC + furnace (full split system) | $5,000–$12,500 | Most full replacements | The headline job in this guide |
| Heat pump system | $5,500–$13,000 | Mild climates; all-electric homes | Replaces both heating and cooling |
| Ductless mini-split (multi-zone) | $5,000–$15,000+ | No existing ductwork; additions | Priced per zone; single-zone from ≈ $3,000 |
| New ductwork (add-on) | $2,100–$4,000 | Homes with failed or no ducts | For a 2,000 sq ft home; per published guides |
Ranges compiled from Angi and Modernize 2026 published data. Equipment brand matters less than correct sizing: an oversized system that short-cycles will cost more, dehumidify worse and wear out sooner than a correctly sized mid-tier unit.
What drives the price up or down
Home size and system tonnage
Systems are sized in tons (one ton ≈ cooling for roughly 500–600 sq ft, climate-dependent). Each additional ton adds equipment and duct capacity cost. A proper quote starts with a load calculation (Manual J) — if a contractor sizes by 'rule of thumb' alone, get another quote.
Efficiency tier (SEER2 / AFUE)
Minimum-efficiency equipment is cheapest to buy; high-SEER2 and high-AFUE models can add $1,500–$4,000 to the installed price while cutting energy bills. With the federal 25C credit gone for 2026 installations, the payback on top-tier efficiency depends on your local energy prices and how much you run the system.
Ductwork condition
Leaky, undersized or asbestos-era ductwork can quietly add $2,100–$4,000+ — or make a ductless system the cheaper route. Ask for a duct inspection as part of every quote; replacing equipment onto failed ducts is the most common way to waste this entire budget.
Fuel type and conversions
Switching fuels (oil to gas, gas to heat pump) adds line runs, electrical work and sometimes a panel upgrade ($1,500–$4,000 on its own). Like-for-like swaps are almost always the cheapest job.
Region and season
Labour rates in major metros run well above the national average, and summer/winter emergency replacements carry premium pricing and multi-week waits. A planned spring or autumn replacement is usually the cheapest version of this job.
Cost by region
| Region | Typical range | Why |
|---|---|---|
| South / Southeast | $4,800–$11,000 | Heat pumps common; long cooling seasons wear systems faster |
| Midwest | $5,000–$12,000 | Near national average; furnace + AC combos standard |
| Northeast | $6,000–$14,000 | Higher labour rates; oil-to-gas conversions common |
| West Coast | $6,500–$15,000+ | Highest labour costs; electrification rules in some cities |
Regional bands are compiled from the regional spreads in published national cost guides (Angi, Modernize). They are variation bands around the national typical range, not state statistics.
Ways to keep the cost down
- Get three quotes that each specify the exact model numbers, tonnage, SEER2/AFUE rating and what ductwork work is included — then compare like with like.
- Ask for the load calculation. A contractor who will not show a Manual J (or equivalent) is guessing with your money.
- If only one half of the system failed, ask for the price both ways: replacing the AC alone is cheaper now, but a matched full system usually carries a better warranty and efficiency rating.
- Check current state and utility rebates before signing — federal 25C ended after 2025, but many state and utility programmes still pay for heat pumps and high-efficiency units.
- Replace in spring or autumn if the old system still limps along; planned off-season installs get better prices and the installer's A-team.
- Confirm the quote includes the permit, old-equipment disposal and thermostat — three items that quietly appear as extras on low bids.
Furnace Replacement Cost
Installed prices by fuel type and AFUE efficiency tier, from Angi project data.
Typical: $4,814 · Range $2,823–$6,897❄️Central AC Replacement Cost
Installed prices by tonnage and SEER2 efficiency tier, from HomeGuide and Angi data.
Typical: $5,980 · Range $5,300–$10,500Frequently asked questions
How long does an HVAC system last?
Central AC and heat pumps typically last 12–17 years; gas furnaces 15–25 years. Coastal salt air and heavy run-time shorten those numbers. Past about 12 years, a major repair (compressor, heat exchanger) is usually money better put toward replacement.
Should I replace the furnace and AC at the same time?
If both are near end of life, yes — one installation visit, a matched system with a single warranty, and typically a lower combined price than two separate jobs. If the furnace is under 10 years old, AC-only replacement is usually the sensible spend.
What size HVAC system do I need?
Roughly one ton of cooling per 500–600 sq ft in most climates, adjusted for insulation, windows, ceiling height and sun exposure. Insist on a load calculation rather than a square-foot rule — oversizing is as harmful as undersizing.
Are there tax credits for a new HVAC system in 2026?
The federal 25C credit is not available for equipment placed in service after December 31, 2025. Some state, local and utility rebates remain — check your utility's current programme before you buy, and keep invoices and the manufacturer's certificate.
How long does installation take?
A like-for-like full-system swap is usually one to two days. Add a day or more for ductwork changes, fuel conversion or electrical upgrades.
Why did I get quotes from $5,000 to $14,000 for the same house?
Almost always scope and efficiency: one bid is a minimum-efficiency AC-only swap reusing everything; the other is a high-efficiency full system with duct modifications. Ask each bidder to itemise equipment, ductwork, permit and warranty so the difference is visible.
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Typical: $100/hr · Range $45–$200/hrSources: Angi HVAC replacement cost guide (2026 data); Modernize HVAC cost calculator (2026; 56,000 projects); IRS guidance on the 25C credit end-date as reported in 2026 cost guides. Full source list and methodology: How we research. Spotted a price that looks wrong in your area? Tell us — we re-check reader-flagged figures first.