Central air installation with new ductwork typically costs $8,000-$20,000, with many standard projects near $13,000. A calculator estimate depends mainly on home size, system capacity, duct layout, equipment efficiency, labor rates, and whether old equipment must be removed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Central AC and new ductwork | $8,000 | $13,000 | $20,000 | Typical 1,500-2,500 sq ft home |
| Air conditioner equipment | $3,500 | $5,500 | $8,500 | Roughly 2-4 tons, standard efficiency |
| New duct installation | $2,500 | $5,000 | $9,000 | Varies with access and number of runs |
| Labor and startup | $1,500 | $2,500 | $4,000 | Installation, testing, and commissioning |
Assumptions: U.S. national planning ranges, standard split-system equipment, accessible installation, and no major electrical or structural upgrades.
What a ducted central air installation usually costs
A new central air system with ductwork generally runs $8,000-$20,000 installed. A straightforward project in a modest home may fall near $8,000-$11,000; a typical 1,500-2,500-square-foot home often reaches $11,000-$16,000; complex layouts or premium equipment can exceed $20,000.
For rough calculator use, budget about $5-$10 per square foot for the complete project, not as a contractor quote. A 2,000-square-foot home could therefore pencil out at $10,000-$20,000. The range assumes appropriately sized cooling equipment, basic controls, new supply and return ducts, and typical local labor. Home size is only a starting point; a load calculation and duct plan determine the quote.
How equipment, duct materials, and labor shape the quote
Installers may quote one bundled amount, but separating the work helps identify what drives the price. These component ranges overlap and should not be added at their high ends as a separate estimate.
| Quote component | Low | Average | High | What changes the charge |
|---|---|---|---|---|
| AC equipment | $3,500 | $5,500 | $8,500 | Capacity, efficiency, and brand tier |
| Duct materials | $1,200 | $2,500 | $4,500 | Sheet metal, flex duct, insulation, fittings |
| Duct installation labor | $1,500 | $3,000 | $5,500 | Access, routing, and number of registers |
| AC installation labor | $1,200 | $2,200 | $3,500 | Line set, electrical connections, startup |
| Removal and disposal | $200 | $500 | $1,000 | Old unit, old duct, and refrigerant handling |
Planning labor at about $75-$150 per crew-hour can help explain labor line items, but contractors typically price a complete installation rather than billing each hour separately. Ask whether duct sealing, insulation, registers, thermostat, and disposal are included.
Why tonnage, floor area, and duct access change the estimate
Equipment capacity has a substantial effect: a 2-ton system may suit some smaller, well-insulated homes, while a 4-5-ton unit may be needed for larger or higher-load homes. Equipment-only pricing commonly rises from roughly $3,500-$5,500 for smaller standard systems to $6,000-$10,000 for larger or higher-efficiency models. Oversizing can cause comfort and humidity problems, so tonnage should follow a Manual J load calculation rather than square footage alone.
Duct scope can shift the quote just as much. A simple attic or basement route with 8-12 supply runs may cost $2,500-$5,000; a home requiring 15 or more runs, multiple floors, or concealed chases can push ductwork above $7,000. Tight crawlspaces, finished ceilings, long runs over 40 feet, and difficult returns add labor or finish-repair expense. Request a duct design that states register count, return-air plan, insulation level, and air-balance testing.
Three home-size examples for a cost calculator
These sample totals show how a preliminary estimate can be built. They assume standard-efficiency equipment, new ducts, ordinary access, and no major electrical upgrade; local quotes may differ.
| Scenario | System and duct scope | Estimated total | Approximate rate |
|---|---|---|---|
| 1,200 sq ft ranch | 2-ton unit, 8 supply runs, basic attic access | $8,000-$11,000 | $6.70-$9.20 per sq ft |
| 2,000 sq ft two-story | 3-ton unit, 12-15 runs, new returns | $11,000-$16,000 | $5.50-$8.00 per sq ft |
| 2,800 sq ft home | 4-5-ton unit, 18-plus runs, difficult routing | $16,000-$24,000 | $5.70-$8.60 per sq ft |
These are planning examples, not sizing recommendations. Climate, insulation, windows, ceiling height, and air leakage affect required capacity.
Which extras add removal, electrical, or permit charges
Removing old equipment and hauling it away may add $200-$1,000, while old duct removal can add $500-$2,000 when access is difficult. Electrical work, a new disconnect, condensate drainage, or refrigerant-line replacement may add $300-$1,500. Permit and inspection fees commonly land around $100-$500, although local requirements vary.
Efficiency upgrades also change the upfront figure. A higher-efficiency system may add $1,000-$3,000 or more compared with a basic model, depending on capacity and controls. A zoning system, upgraded filtration, or smart thermostat can add several hundred to a few thousand dollars. Compare the installed price and included scope, not just the equipment label or advertised unit cost.
How regional labor rates affect central air pricing
Labor and permitting differences can move a complete quote about 10%-25% above or below a national planning figure. High-cost metro areas and regions with strong contractor demand often price toward the upper end; rural areas may have lower labor rates but higher travel or delivery charges. Hot-climate markets can also see busy-season scheduling premiums.
For a $13,000 midrange project, a 10%-20% local variation means roughly $11,700-$15,600 before unusual site work. Obtain quotes from licensed contractors familiar with local codes, and compare identical equipment capacity, duct scope, and warranty terms. Three itemized bids are more useful than comparing headline totals with different inclusions.
Ways to lower the ductwork installation price
Keep usable ducts only if they are correctly sized, sealed, insulated, and in good condition; replacing them unnecessarily can add thousands, while retaining undersized or leaky ducts may undermine system performance. Ask for a duct inspection and leakage test before deciding. If only sections are damaged, targeted replacement may cost less than a full redesign.
Other controllable choices include scheduling outside peak cooling demand, selecting a standard efficiency tier after comparing lifetime operating costs, and keeping thermostat or filtration upgrades separate from required work. Clear the attic, basement, or utility area before the crew arrives, and confirm whether patching, painting, and disposal are excluded. Use the same written scope and equipment specifications for every quote to expose avoidable price differences.