Most U.S. homeowners replacing an air conditioner and adding or replacing ductwork pay between $6,000 and $18,000 depending on system size, duct scope, and installation complexity. This article focuses on the average cost of new AC and ductwork and the main price drivers to help prepare realistic budgets.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete AC + Full Duct Replacement | $6,000 | $11,500 | $18,000 | Assumptions: 2-3 ton unit, 1,200-2,000 sq ft home, standard sheet-metal ducts, suburban labor. |
| AC Only (Replace) | $2,500 | $5,500 | $9,500 | Assumptions: 1.5-4 ton, mid-efficiency, includes condenser and coil. |
| Ductwork Only (Partial) | $1,200 | $4,000 | $8,500 | Assumptions: repair or add runs for 800-2,000 sq ft. |
Typical Total Price for New AC and Ductwork
Expect a typical combined total of $8,000-$14,000 for a 2-3 ton AC with moderate duct replacement in most U.S. markets. Prices vary by unit efficiency, whether ducts are full replacement or selective repair, and home layout.
Average AC-only replacement runs $2,500-$6,500 for 1.5–3.5 ton systems; added ductwork changes totals significantly. Assumptions: mid-efficiency 14-16 SEER unit, single-family home, accessible attic.
Material, Labor, Equipment and Disposal Cost Breakdown
Breakdown helps compare quotes and spot costly line items such as custom duct fabrication or high-SEER equipment.
| Materials | Labor | Equipment | Delivery/Disposal | Contingency |
|---|---|---|---|---|
| $1,200-$4,500 (unit, coil, refrigerant lines) | $1,200-$4,000 () | $200-$800 (lift, scaffold) | $150-$700 (old unit hauling, duct disposal) | $300-$1,200 (unexpected repairs) |
How System Size, SEER Rating, and Duct Length Change Price
Key numeric drivers: system tonnage, SEER, and total duct linear feet—each raises price at predictable thresholds.
Example thresholds: 1.5–2 ton systems: lower end; 2.5–3.5 ton common for 1,200–2,500 sq ft and add ~$800-$1,500 per additional half-ton. Upgrading from 14 SEER to 18 SEER usually adds $1,200-$3,000. Duct length: simple 100–200 linear ft runs cost less; adding 300+ linear ft of new ductwork can push duct costs from $2,000 to $6,000.
Practical Ways To Lower AC And Ductwork Price
Cost reductions come from scope control: repair instead of full duct replacement, choosing mid-efficiency units, and scheduling off-season installation.
Specific tactics: get multiple quotes, accept manufacturer-standard equipment instead of premium add-ons, prepare attic access to reduce labor hours, and bundle with related work (furnace or insulation) to lower per-item markup.
How Regional Pricing Changes the Final Quote
Expect 10–30% regional variance: urban and coastal areas trend higher; rural Midwest and South usually lower.
Typical deltas: Northeast/West Coast +15–30% vs. Midwest baseline; Southeast +5–15%; rural areas -10–15%. These percentages reflect labor rates, permit fees, and contractor overhead rather than equipment MSRP.
Common Add-Ons, Removal Fees, and Inspection Costs
Add-ons can add $300-$2,500 to a quote; always check line items for mandatory tests and inspections.
Frequent extras: duct sealing and balancing $300-$1,000, refrigerant changeover or retrofit $400-$1,200, curb adapters or roof work $200-$1,000, CO testing or final inspection fees $75-$250.
Three Real-World Quote Examples With Specs and Totals
| Scenario | Specs | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Basic Replace | 2.5 ton, 14 SEER, existing ducts OK | 10-14 | $75-$110/hour | $3,500-$5,500 |
| Full Replace | 3.0 ton, 16 SEER, partial duct redo (200 ft) | 20-36 | $85-$125/hour | $9,000-$12,500 |
| High-End | 4.0 ton, 18 SEER, full new sheet-metal ducts (350 ft) | 40-60 | $95-$150/hour | $14,000-$20,000 |
Typical Job Duration, Crew Size, and How Time Affects Price
Installation time and crew size directly affect labor cost: most full AC+duct jobs take 2–5 days with a 2–4 person crew.
Labor examples: small AC swap 10–16 hours (2 techs), partial ductwork 20–36 hours (2–3 techs), full duct replacement 40–60 hours (3–4 techs). Longer jobs increase overhead and potential permit/inspection fees.