A split cooling system, typically a central air conditioner with an indoor coil and outdoor condenser, costs about $4,000-$12,000 installed; the average is roughly $7,500. Equipment capacity, ductwork condition, local labor, and electrical or code upgrades have the biggest effect on the final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed split AC system | $4,000 | $7,500 | $12,000 | Existing ducts; standard efficiency |
| Equipment only | $1,800 | $3,500 | $6,500 | Condenser and indoor coil |
| Installation labor | $1,500 | $3,000 | $5,000 | More if ducts or wiring need work |
| New ductwork | $2,000 | $5,000 | $10,000 | Whole-home replacement can cost more |
What a typical split-system AC installation costs
Most homeowners pay $4,000-$12,000 for a complete split air-conditioning replacement using existing, serviceable ducts. A common 2- to 3-ton system for a 1,500- to 2,000-square-foot home often lands around $5,500-$9,000, including standard installation and basic removal of the old equipment. A 4- to 5-ton system or premium variable-speed equipment can exceed $12,000.
Standalone equipment generally runs $1,800-$6,500, but buying the unit alone does not include professional installation, refrigerant work, startup, or warranty requirements. Installed prices commonly translate to about $3-$7 per square foot when ducts are usable; this is a rough comparison, not a substitute for a load calculation. Assumptions: existing ductwork is usable, access is normal, and pricing reflects typical U.S. contractor rates. A realistic budget for a standard replacement is $6,000-$9,000 before major duct or electrical repairs.
How equipment, labor, and ductwork shape the quote
Quotes combine the matched indoor and outdoor equipment with installation tasks and any site-specific work. The cost breakdown below reflects typical ranges; individual line items can overlap because contractors package equipment, labor, and overhead differently.
| Quote item | Typical range | Pricing basis | Usually includes |
|---|---|---|---|
| Condenser and indoor coil | $1,800-$6,500 | Per matched system | Standard single-stage to premium variable-speed equipment |
| Installation labor | $1,500-$5,000 | $75-$150 per crew-hour | Removal, setting equipment, connections, startup |
| Duct repairs or replacement | $300-$10,000 | $15-$35 per linear ft for accessible runs | Sealing, modifications, or larger replacement scope |
| Electrical, pad, and line set | $300-$2,000 | Per project | Disconnect, condenser pad, or refrigerant piping changes |
| Permit and disposal | $100-$600 | Per job | Local permit and old-unit haul-away where applicable |
Labor hours and rates vary with access and project scope. Ask for equipment model numbers and separate line items so competing bids can be compared fairly.
Why tonnage, SEER2, and duct condition change prices
System capacity is a major driver: equipment for a 1.5- to 2-ton load generally costs less than a 4- to 5-ton system, but selecting capacity by square footage alone can lead to poor comfort and higher operating costs. A contractor should size equipment using a home load calculation, accounting for insulation, windows, climate, and layout.
Efficiency also affects the quote. Basic single-stage systems may be near the lower end of the range, while higher-SEER2 or variable-speed models can add roughly $1,000-$4,000. Duct condition matters just as much: sealing or repairing a few accessible runs may cost $300-$1,500, while replacing extensive ducts can add $5,000-$10,000 or more. Capacity changes above 3 tons and a jump to premium controls can move a bid by thousands of dollars.
Does installation cost more in hot or high-cost regions?
Prices tend to be higher in expensive metro areas and places with strong summer demand. A comparable installation can run about 10%-25% above a national midrange in markets such as coastal California or the Northeast corridor; lower-cost rural markets may come in 5%-15% below it. These are broad comparisons, not guaranteed local rates.
Climate affects equipment selection and scheduling. In hot, humid regions, contractors may recommend higher capacity or humidity-control features, while peak-season emergency replacements can carry a premium of roughly 5%-15%. Getting estimates during spring or fall may improve scheduling options, though equipment and labor prices still depend on local supply. Compare quotes from licensed local contractors rather than applying a national average directly to a specific home.
How many labor hours does a replacement take?
A straightforward changeout with accessible equipment and compatible connections commonly takes a two-person crew 6-10 hours. A new system requiring electrical changes, refrigerant-line replacement, difficult attic access, or duct modifications may take 1-3 days. Labor charges often work out to $75-$150 per crew-hour, although flat-rate bids are common.
Ask whether the quote includes a load calculation, refrigerant line pressure testing, system commissioning, thermostat setup, and disposal. A low bid that omits these tasks may not represent the same scope. Confirm whether permits, startup testing, and haul-away are included before comparing totals.
Which add-ons can push the installed price higher?
Common extras include a new thermostat at $150-$600 installed, a condensate pump at $150-$450, and a new electrical circuit or disconnect at $300-$1,500. Replacing a long or inaccessible refrigerant line set can add $500-$2,000. Permit charges are often $100-$400, but local requirements vary, and code corrections can cost more.
Old equipment removal may be included or charged separately at about $100-$400. Severe corrosion, a weak electrical panel, asbestos-containing materials, or a crane lift can create additional expenses. Request written approval for concealed-condition charges before work proceeds.
How to lower the price without undersizing the system
Keep usable ducts and refrigerant lines when inspection confirms they are compatible and in sound condition. Choose the efficiency tier based on local electricity rates and expected years in the home, rather than paying extra for features that do not meet a specific need. A standard single-stage system can cost less upfront than a variable-speed model, while still providing adequate cooling when correctly sized.
Collect at least three itemized bids for the same capacity, efficiency level, thermostat, and scope. Schedule before peak heat when practical, handle simple access preparation such as clearing the work area, and avoid replacing ducts solely because a contractor recommends it without documenting leakage or damage. Do not trade away correct sizing, permitted work, or commissioning to get a lower headline price.