Typical ductwork replacement costs range widely based on duct material, size, and labor. This guide highlights the price drivers, per unit ranges, and realistic budget scenarios to help buyers plan a project and compare estimates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Project total | $4,000 | $7,500 | $12,000 | Includes most homes with mid size systems |
| Per duct run | $150 | $350 | $600 | Depends on length and material |
| Materials per CFM | $0.50 | $1.20 | $2.50 | Smaller homes use less |
| Labor per hour | $45 | $75 | $120 | Union vs nonunion varies |
| Permits & disposal | $100 | $400 | $900 | Regional rules apply |
Overview Of Costs
Cost factors include duct material type, system size, attic or crawlspace access, and labor intensity. Typical cost ranges reflect whether the replacement is partial or full, the number of supply and return runs, and whether the work occurs in tight spaces or above ceilings. A full replacement generally costs more than a partial reroute but can improve efficiency and air quality over time.
Cost Breakdown
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $1,000 | $3,000 | $7,000 | Rigid metal or fiberglass, flexible ducts, insulation |
| Labor | $1,800 | $4,000 | $6,500 | Crew size 2–4, typical 1–3 days |
| Equipment | $200 | $800 | $2,000 | Jetting, testing, sealing tools |
| Permits | $50 | $250 | $600 | Municipal requirements vary |
| Delivery/Disposal | $50 | $250 | $700 | Old duct disposal sometimes included |
| Accessories & Sealants | $40 | $200 | $600 | Adhesives, mastic, tape |
| Warranty / Overhead | $60 | $350 | $900 | Labor warranty and business overhead |
Pricing Variables
Price depends on duct material, insulation needs, and system design. Two niche drivers often push costs higher: (1) duct size and length, measured in CFM and linear feet; (2) accessibility, such as attic clearance or crawlspace routing, which can add hours of labor. For example, in homes with tight attic space, contractors may bill more per linear foot due to maneuvering time.
Assumptions: region, duct layout complexity, labor hours. A typical house with a mid sized furnace and 3 zones may require 40–80 linear feet of ductwork and 4–6 hours of skilled labor per crew day.
Per unit costs can appear as $/sq ft or $/linear ft. A common range is $4–$12 per linear foot for basic flexible ducts in accessible spaces, rising to $20–$40 per linear foot for rigid metal ducts with complex routing and higher insulation needs.
Regional Price Differences
Prices vary by region, urban vs suburban, and rural markets. In the Northeast and West Coast, material and labor premiums commonly push totals higher. The South often presents lower baseline rates, while the Midwest sits between. Regional deltas can be ±15–30% from a national average, depending on access, crew availability, and permit costs.
Labor & Installation Time
Labor costs are driven by crew size, hours, and task difficulty. A two-person crew typically completes a partial replacement in 1–2 days, while a full replacement with multiple zones may require 3–5 days. Install time depends on attic access, duct routing, and sealing quality. A rough rule of thumb uses hours × hourly rate to estimate labor cost.
Additional & Hidden Costs
Unexpected items can elevate the budget. Extra insulation, air sealing beyond duct envelopes, or upgrading to code-compliant materials may add to the price. If a home has asbestos or needed duct cleaning before installation, costs can climb. Hidden costs often appear as permit fees or disposal charges that differ by locale.
Real-World Pricing Examples
Below are three scenario cards to illustrate practical budgeting.
- Basic: Partial replacement of supply runs in an accessible attic, 40–60 linear feet, flexible ducts, 1 zone. Labor 1–2 days. Total $3,000–$5,000. Per linear foot $75–$100.
- Mid-Range: Full home reroute with rigid metal in accessible spaces, 80–120 linear feet, insulation, 2 zones. Labor 3–4 days. Total $6,000–$9,500. Per linear foot $85–$125.
- Premium: Comprehensive system redesign, multiple zones, high-efficiency materials, complicated routing in tight spaces, 150–220 linear feet. Labor 5–7 days. Total $10,000–$15,500. Per linear foot $100–$140.
Assumptions: region, specs, labor hours.
Budget planning should also account for potential maintenance improvements, such as enhanced sealing or a diagnostic air balance after installation. A post installation test ensures the system operates within intended airflow and efficiency targets, which can add small ongoing costs but reduce future energy use.
