Average Cost of New AC and Ductwork Installation 2026

Typical buyers pay $5,500-$12,000 for a new central air conditioner plus ductwork replacement or major repairs; the price varies with system size, duct complexity, and labor. This article breaks down the average cost, per-ton and per-linear-foot rates, and the biggest drivers affecting a new AC and ductwork price.

Item	Low	Average	High	Notes
AC System Only (2.5–3.5 tons)	$2,500	$4,500	$7,500	Assumptions: mid-efficiency, matched condensing unit and coil.
Ductwork Replacement (single-story, 1,200–2,000 sq ft)	$1,500	$4,000	$8,000	Assumptions: accessible attic/crawlspace, standard sheet metal.
Full Install (AC + new ducts)	$4,500	$9,000	$18,000	Assumptions: typical US home, permits, basic insulation.

Typical Total Price for A New AC With Ductwork

For a common U.S. single-family home, buyers usually pay $5,500-$12,000 for a matched AC system and new or majorly modified ductwork; average is about $9,000. This total includes equipment, basic materials, labor, and standard permit costs in many regions.

Assumptions: 2.5–4 ton system, 1,200–2,400 sq ft home, moderate complexity, suburban labor rates.

Line-Item Cost Components in an AC + Duct Quote

Typical contractor quotes break into equipment, materials, labor, permits, and disposal; these determine the final price. Expect equipment to account for roughly 35%–55% of the total and labor/materials the remaining share.

Materials	Labor	Equipment	Permits	Delivery/Disposal
$800-$4,000 (sheet metal, insulation, boots)	$1,200-$4,500 ()	$2,500-$7,500 (condensing unit, coil)	$50-$800	$150-$800

How System Size and Duct Length Change the Price

System tonnage and duct linear feet are primary levers: a 2.5–3 ton system usually costs $3,000-$6,000 installed; each additional ton adds $800-$1,600. Ductwork is often priced at $4-$9 per sq ft of conditioned area or $8-$20 per linear ft for new runs.

Numeric thresholds: adding a second ton (e.g., from 3 to 4 tons) can raise equipment cost $1,000-$1,600; replacing more than 200 linear ft of duct commonly pushes the ductwork subtotal above $4,000.

Top Site Conditions and Specs That Drive Quotes

Tight attics, multi-story access, or high-efficiency requirements change labor and material needs and add costs. Examples: poor attic access adds $500-$2,000; achieving a high-efficiency SEER 16–20 system adds $1,200-$3,500 over base models.

Other drivers with numeric thresholds: crawlspace depth over 18 inches may increase labor rates by 10%–25%; duct runs over 200 linear ft typically require larger trunk sizes and increase material by 15%–30%.

Practical Ways To Lower AC and Ductwork Price

Control scope to save money: repair and seal existing ducts when possible, choose mid-efficiency equipment, and schedule work off-season. Replacing only damaged duct sections instead of full replacement can reduce duct costs by 40%–70% on many homes.

• Get at least three written quotes that separate equipment and labor.
• Ask for load-calculation-based sizing to avoid oversizing the unit.
• Bundle with related work (furnace changeover) to reduce mobilization fees.

Regional Price Variations and What To Expect Locally

Costs vary around the U.S.: urban Northeast/West Coast prices are typically 10%–25% higher than Midwest averages, while rural areas may be 5%–15% lower but with longer lead times. Expect $800-$2,000 premium in high-cost metro areas compared with Midwest baseline pricing.

Assumptions: percentage deltas are relative to the Midwest average and assume similar scope and equipment level.

Common Add-Ons, Timelines, and Real Quote Examples

Typical add-ons include refrigerant recovery, line set replacement, zoning dampers, and insulation upgrades; these add $150-$2,500 depending on complexity. Rush installation may add 10%–30% to labor if required within 7 days.

Example	Specs	Labor Hours	Unit/Per-Unit	Total
Basic Replace	3-ton, existing ducts repaired	10-15	$3,800 equipment	$5,500-$6,500
Full Replace	3.5-ton, full duct replacement, attic access	30-50	$12-$18 per linear ft ducts	$11,000-$16,000
High-Efficiency Install	4-ton SEER 18, zoning, new ducts	40-60	$5,800 equipment	$14,000-$18,000

Questions That Affect Your Final Quote

Ask contractors whether quotes include load calculation, duct sealing with mastic, permit fees, and a performance test; missing items often become change orders. Insist on a written scope showing per-item pricing to compare quotes accurately.