Most homeowners pay between $1,200 and $8,000 to install or replace ductwork, with final price driven by system size, material, and complexity. This article answers “How much does ductwork cost” and gives clear low-average-high ranges, per-unit pricing, and the main cost drivers for U.S. projects.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Full residential duct replacement (single-family) | $1,200 | $4,500 | $8,000 | Assumptions: 1,200–2,400 sq ft home, standard metal ducts, moderate access |
| New trunk & branch (per linear ft) | $6 per ft | $12 per ft | $25 per ft | Includes materials + labor for straight runs |
| Flexible duct (per supply run) | $40 | $80 | $150 | Per register run, 10–25 ft |
| Air handler to register add-on (per register) | $75 | $140 | $300 | Includes boot, collar, balancing |
Typical Total Price For Replacing Residential Ductwork
Full-system replacement for a typical single-family home usually costs $1,200-$8,000 depending on square footage and number of supply/return runs. A common mid-range job for a 1,800 sq ft house runs $3,500-$5,500.
Assumptions: Midwest labor rates, standard 8–12 supply runs, sheet-metal ducts, attic access.
Breakdown Of Major Quote Components For Ductwork
Understanding line items helps compare quotes and spot padding. Materials, labor, equipment, and delivery/disposal typically account for over 90% of the total.
| Materials | Labor | Equipment | Delivery/Disposal |
|---|---|---|---|
| $300-$2,500 (sheet metal, flex, insulation) | $600-$4,000 ( ; $75-$125 per hour) | $50-$400 (scaffolding, lifts, power tools) | $50-$400 (old duct disposal, haul-off) |
How Size, Layout, And Material Change The Final Quote
Square footage, number of zones, and duct material create the biggest swings in price. Expect costs to jump sharply above 2,500 sq ft, with jobs >3,500 sq ft commonly 30–70% higher than average.
Two niche drivers: linear footage (runs over 200 linear ft add $6-$15 per additional ft) and attic vs. crawlspace access (attic work can add $300-$1,200 for safe staging).
Labor Time, Crew Size, And Typical Installation Duration
Labor is a major cost line and affects scheduling and daily rates. A small residential replacement usually needs 10–24 hours of crew time; expect 1–3 installers depending on job complexity.
Hourly rates range $75-$125 for HVAC technicians; a 2-person crew at $90/hr each for 16 hours yields labor around $2,880 (16 × $180). Assumptions: average local rates, normal access.
Real-World Quote Examples With Specs And Totals
Concrete examples help set expectations. Three realistic quotes illustrate how scope and material choices change totals.
| Job | Specs | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Small replacement | 1,000 sq ft, 8 runs, some flex | 12 | Flex runs $60 each | $1,200-$1,800 |
| Mid-size rework | 1,800 sq ft, new trunk & branches, sheet metal | 20 | Trunk $15/ft, runs $100 each | $3,500-$5,500 |
| Large/full redo | 3,600 sq ft, multi-zone, new insulation | 40 | Sheet metal $18/ft | $6,500-$10,500 |
Add-Ons, Prep Work, And Hidden Fees That Raise Price
Expect extra charges for specialty items and site complications. Common add-ons: sealed seams, improved insulation, balancing, and new registers — each can add $50-$500.
Other items that affect the invoice: diagnostic fees ($75-$200), code-required repairs, attic floor protection ($100-$400), and rush scheduling premiums (10–25% surcharge).
Practical Ways To Cut Ductwork Price Without Major Compromise
Buyers can reduce cost by controlling scope and timing. Options that save money: repair runs instead of full replacement, choose flexible insulated ducts for short runs, and bundle ductwork with HVAC unit replacement for contractor discounts.
Other tactics: get at least three detailed written quotes, prepare access (clear attic/crawlspace), accept off-peak scheduling, and skip cosmetic register upgrades to save 10–30% on labor and materials.