New air ducts cost varies widely depending on home size, material, and installation complexity; most U.S. homeowners pay between $1,200 and $8,000 for full duct replacement. Assumptions: single-family home, standard 2-3 ton HVAC, normal attic/crawlspace access. This article lists realistic low-average-high price ranges and the main drivers that change quotes.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Partial duct replacement (few runs) | $400 | $1,200 | $3,000 | Per few runs or branch replacements |
| Full duct replacement (typical 1,800 sq ft) | $2,000 | $4,800 | $10,000 | Includes plenums, main trunks, and registers |
| Flexible duct per linear foot | $4 | $6-$9 | $12 | Includes insulation and fittings |
| Sheet metal duct per linear foot | $8 | $12-$18 | $30 | Galvanized, durable, requires fabrication |
| New registers/grilles | $15 | $45 | $120 | Per fixture, basic to decorative |
Typical Total Price For New Residential Air Ducts
For an average single-family U.S. home (1,500–2,200 sq ft) replacing the entire duct system, buyers usually pay $2,000-$10,000 with $4,000-$6,000 common in many markets. Assumptions: 10–14 supply/return runs, moderate attic access, mid-grade flex or some sheet metal. Expect partial repairs for isolated runs to cost $400-$3,000 depending on how many branches are replaced.
Materials, Labor, Equipment, Disposal Shown In A Typical Ductwork Quote
Quotes break down into clear line items that explain where money goes; understanding these helps compare bids accurately.
| Materials | Labor | Equipment | Delivery/Disposal | Overhead |
|---|---|---|---|---|
| $300-$3,500 (flex, sheet metal, fittings) | $600-$4,000 (crew labor) | $100-$800 (cranes, lifts, power tools) | $50-$500 (haul, disposal, dumpster) | $150-$1,000 (markup, permits) |
Labor often makes up 35–60% of the total price on replacement jobs because of access, sealing, and balancing work.
How Size, Run Length, And Material Grade Change Final Quotes
Three variables strongly alter cost: total square footage served, linear feet of runs, and material grade (flex vs. sheet metal). Homes under 1,200 sq ft typically see full system replacement costs of $1,200-$3,500, while homes over 3,000 sq ft often exceed $7,000.
Examples of numeric thresholds: replacing under 100 linear ft of duct runs is usually <$1,200; 100–300 linear ft is $1,500-$5,000; over 300 linear ft often goes above $6,000. Choosing Class 1 insulated flex at $4-$9 per ft is cheaper than custom spiral or rectangular sheet metal at $12-$30 per ft.
Practical Ways To Reduce The Price On New Ductwork Installations
Control scope and timing to cut costs: replace only damaged runs, avoid moving major structure, schedule work off-peak, and prep access points beforehand. Getting three written quotes and asking contractors to price both flex and sheet metal options typically saves 10–20%.
Other savings: consolidate punch list items to one visit, accept contractor-recommended standard registers ($15-$45) instead of premium grills, and perform basic attic access clearing yourself to reduce labor hours.
How Prices Differ By U.S. Region And Market Type
Regional labor and material differences matter: coastal urban markets (Northeast, West Coast) run 15–35% higher than Midwest and parts of the South. A $4,800 mid-range job in the Midwest might cost $5,500-$6,500 in a major coastal metro.
Rural jobs can add delivery fees or minimum charges; expect a 5–15% premium for long travel distances or small, remote jobs. Assumptions: local wage and truck rates variation.
Typical Job Time, Crew Size, And How Hourly Rates Affect The Final Quote
Most full duct replacements take 1–4 days with a 2–4 person crew; partial jobs take 2–12 hours. Labor rates vary $75-$125 per hour for skilled HVAC techs in many U.S. markets. On-site labor hours often determine final cost—20–60 crew-hours for a typical full replacement is common.
If a contractor charges $90/hr with two techs for 30 hours, labor is roughly $5,400 before taxes and overhead.
Real-World Quote Examples With Specs, Hours, And Totals
Example A: Partial branch replacement—3 flexible runs, 30 linear ft total, 4 hours crew time. Materials $120, labor $300, disposal $40, total $460.
Example B: Full replacement for 1,800 sq ft house—12 supply/4 return runs, 220 linear ft flex + new plenum, 40 crew-hours. Materials $1,200, labor $3,600, equipment/disposal $300, overhead $600, total $5,700.
Example C: High-end duct rebuild with sheet metal for 2,500 sq ft, 350 linear ft, specialty fittings. Materials $4,200, labor $6,000, equipment $700, permits $300, total $11,200. These examples show how scope and material choices move totals from under $500 to over $11,000.