Homeowners typically pay for AC duct work based on duct material, length, and installation complexity. Main cost drivers include duct type, system size, access, and any needed modifications to existing HVAC equipment. The following figures reflect common U.S. pricing ranges and practical budgeting guidance for typical projects.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Ductwork (new installation per system) | $1,200 | $3,000 | $6,000 | Includes materials and basic labor; longer runs increase cost. |
| Rigid (sheet metal) vs. Flexible duct | $800 | $2,200 | $4,500 | Rigid is typically more expensive but durable. |
| Labor (install time) | $600 | $1,400 | $3,000 | Includes crew, permits, and debris cleanup. |
| Permits/Inspections | $50 | $400 | $1,200 | Varies by city and system size. |
| Duct sealing and insulation | $150 | $500 | $1,200 | Improves efficiency and reduces leaks. |
Overview Of Costs
AC duct work costs depend on duct type, run length, and access. A typical mid-size home with flexible duct in the attic often falls in the $2,000-$5,000 range, including labor. For a full rigid-duct system in a larger home, budgets can rise to $4,000-$8,000 or more. Assumptions: central air system, standard attic access, existing equipment compatible with new ducts. Per-unit estimates commonly reflect $/sq ft of duct or $/hour for installation labor.
Cost Breakdown
| Materials | Labor | Equipment | Permits | Delivery/Disposal | Warranty | Overhead | Taxes | Subtotal |
|---|---|---|---|---|---|---|---|---|
| Rigid duct, sealant, insulation | Labor hours vary; typical crew 1–2 days | Fittings, fasteners, access hardware | Local permit filing | Removed materials disposal | 1–5 years depending on installer | 10–15% | 5–9% | Totals reflect regional mix and project scale |
What Drives Price
Key price factors include duct material (flex vs. rigid), total linear feet, number of branch runs, ceiling height, and access constraints. Additional considerations are the SEER rating of the HVAC system, attic temperature, and whether air sealing or insulation upgrades accompany the duct work. For example, extending ducts to new zones or replacing oversized runs adds both materials and labor hours.
Ways To Save
Shop for quotes from at least three licensed contractors to benchmark prices. Consider selecting standard flex duct with efficient seals and minimizing unnecessary runs. Scheduling work in off-peak seasons can also yield lower labor rates and quicker project start dates.
Regional Price Differences
Prices vary by region due to labor costs and material availability. In the Northeast, expect higher labor rates and permitting costs; the Midwest often balances lower materials with standard installation charges; the Southwest can see higher cooling-driven demand and material costs in peak months. Typical regional deltas are ±10–25% from national averages.
Labor, Hours & Rates
Labor hours depend on home layout, access, and existing ductwork compatibility. Typical installations use 1–3 workers over 1–3 days, with hourly rates ranging from $60 to $120 per hour per worker. For complex retrofits, anticipate longer durations and higher totals.
Additional & Hidden Costs
Hidden costs may include attic ventilation upgrades, insulation remediation, or duct cleaning post-install. Surprises can also come from restricted attic space, asbestos assessments, or reconfiguring plenums. Budget 5–15% contingency to cover unanticipated work.
Real-World Pricing Examples
Assumptions: region, standard attic access, mid-range ductwork, no major structural changes.
Basic
Scope: 40–60 linear feet of flexible duct, one supply run, basic sealing. Total around $1,200-$2,000. Per-foot estimate: $20-$28 for materials; labor adds $10-$25 per foot.
Mid-Range
Scope: 80–150 linear feet of mixed rigid and flexible duct, two zones, improved sealing. Total around $2,500-$5,000. Includes permits and disposal.
Premium
Scope: 200+ linear feet of all rigid duct, multiple branches, custom runs, extensive sealing and insulation. Total around $5,000-$8,000 or more. Per-unit pricing reflects higher labor intensity.
Assumptions: region, specs, labor hours.