A new house AC unit typically costs $4,000-$12,000 installed, with an average near $7,500 for a standard central air system. Final price depends most on cooling capacity, equipment efficiency, ductwork condition, and local labor rates; replacing an existing unit usually costs less than adding a complete system.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Central AC installed | $4,000 | $7,500 | $12,000 | Typical replacement, equipment and labor |
| AC equipment only | $2,000 | $4,000 | $7,000 | Condenser and indoor coil; installation extra |
| Ductless mini-split installed | $2,500 | $5,500 | $10,000 | One to three indoor zones |
| Central AC per ton | $1,800 | $3,000 | $4,500 | Installed; varies with efficiency and scope |
What a whole-house AC unit costs installed
For a typical 1,500- to 2,500-square-foot home with usable ductwork, a standard-efficiency central AC replacement often runs $4,000-$8,500. Higher-efficiency equipment, difficult access, or electrical and duct upgrades can push a project to $9,000-$12,000 or more. Costs commonly include the outdoor condenser, indoor evaporator coil, refrigerant line connection, removal of the old unit, and startup testing.
A reasonable national planning budget is about $5,000-$10,000 for a straightforward central AC replacement. Prices are not fixed nationally: coastal cities and high-cost metro areas can exceed rural-market quotes, while a new system requiring extensive ductwork costs more than equipment swapped onto existing connections.
Assumptions: standard central system, existing ductwork in serviceable condition, normal access, and no major electrical or structural work.
Where condenser, coil, and labor charges appear
Quotes can combine equipment and labor differently, so compare what each line includes. The ranges below describe common portions of an installed central AC replacement; a contractor may bundle several items into one price.
| Quote item | Typical range | Unit or scope | What changes the charge |
|---|---|---|---|
| Condenser and indoor coil | $2,500-$6,000 | One matched system | Capacity, brand, efficiency |
| Installation labor | $1,200-$3,000 | About 8-16 crew hours | Access, line work, system complexity |
| Refrigerant lines or electrical | $300-$1,500 | Per project | Replacement, code, or disconnect work |
| Old unit removal | $100-$500 | Per system | Haul-away and disposal needs |
| Duct repairs or modifications | $300-$2,500 | Per project | Leak sealing, resizing, or access |
Labor may represent roughly 20%-35% of a replacement quote. A useful estimate is ; HVAC labor rates commonly fall around $75-$150 per hour, though companies usually price installation as a project.
How tonnage and SEER2 change the AC price
Cooling capacity and efficiency have a direct effect on equipment price, but a larger unit is not automatically a better choice. Many homes use systems around 2-5 tons; equipment and installation can rise by roughly $500-$1,500 when moving up a ton, depending on the system and required modifications. A load calculation should account for insulation, windows, climate, and layout rather than relying only on square footage.
Higher-efficiency equipment with a stronger SEER2 rating can add about $1,000-$3,000 compared with a basic model. Local minimum efficiency rules, humidity needs, and electricity rates affect whether the premium makes financial sense. A mismatch between indoor coil and outdoor condenser can also limit performance or invalidate equipment coverage.
Capacity changes and efficiency upgrades are most costly when they require new wiring, refrigerant lines, or duct adjustments. Ask for the proposed tonnage, SEER2 rating, and matched equipment model numbers in writing.
What installation details add to a replacement quote
Replacing a unit in the same location often takes one workday, generally 8-16 crew hours. New-system installations can take longer when technicians need to route lines, install a condensate drain, or adapt an air handler. Labor availability and access to an attic or crawlspace can affect both schedule and price.
Common extras include a new thermostat for $150-$600 installed, a condensate pump for $150-$400, and a permit or inspection fee of about $50-$500, depending on the municipality. Duct sealing or balancing may add $300-$1,500. Refrigerant line replacement can cost $500-$2,000 when the existing line is damaged, incorrectly sized, or incompatible with the new system.
Confirm whether the quote includes permits, startup, haul-away, and any required electrical work. A low equipment price can become a higher total if these items are excluded.
How regional labor rates shift central AC pricing
Quotes in major coastal and high-cost metro markets may run 10%-25% above the national middle, reflecting wages, permits, and operating expenses. Rural areas may be 5%-15% lower when contractor competition and travel charges are favorable, although limited technician availability can reverse that difference. Hot-climate markets may see higher seasonal demand and more frequent equipment replacements.
Compare quotes from contractors serving the same local market rather than relying on a national average alone. Compare identical capacity, efficiency, included materials, warranty terms, and disposal scope to distinguish a real price difference from a different specification.
Three home sizes show realistic installed price ranges
A 1,200-square-foot home with a 2-ton standard-efficiency replacement might receive a $4,500-$6,500 quote, including roughly 10 crew hours and reuse of serviceable ducts. A 2,000-square-foot home needing a 3-ton system could land around $6,000-$9,000, with 12-14 hours of labor and a new thermostat. A 2,800-square-foot home requiring a 4-ton, higher-efficiency system and duct repairs may cost $9,000-$13,000, depending on access and regional rates.
These examples assume typical replacement work, not a full duct-system installation. A new duct network can add several thousand dollars, while unusual roof, attic, or crane access can add separate equipment charges.
When AC repair costs less than replacing the unit
Common repairs such as a capacitor, contactor, or drain issue may cost $150-$800, while a blower motor or refrigerant leak repair can run $500-$2,000 or more. Repair is often worth pricing when the system is under 10 years old, the fault is isolated, and parts remain available. Replacement becomes more compelling when major components fail repeatedly or the unit is around 12-15 years old.
Compare the repair quote with the remaining useful life and likely energy expense, not just the repair bill. A technician should identify the failure and provide the repair scope before a homeowner commits to replacing an otherwise serviceable system.
Which AC choices can lower the final bill
Keeping a correctly sized unit, serviceable ductwork, and compatible electrical connections can avoid unnecessary upgrades. Get at least three itemized bids and compare the same capacity and SEER2 level. Scheduling before peak summer demand may improve appointment availability; it does not guarantee a lower price. Ask whether a basic thermostat or standard warranty is included before paying for premium add-ons.
Control scope first: approve only documented code, safety, or performance work that is needed for the installation. Check written warranty coverage, labor coverage, exclusions, and any maintenance requirements alongside the total price.