Redo Ductwork Cost for Typical U.S. Homes 2026
Homeowners replacing or reworking HVAC ductwork typically pay between $1,200 and $12,000 depending on scope; the average full replacement runs about $4,500-$6,500. This article estimates redo ductwork cost and lists the main drivers so buyers can compare quotes and budget accurately.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Partial repair (repair/patch) | $150 | $400 | $900 | 1-3 registers, minor leaks, access in attic/crawl |
| Partial replacement (single run) | $400 | $1,200 | $3,000 | 10-30 linear ft, new flex or sheet metal |
| Full replacement (single-story, 1,200-2,000 sq ft) | $2,500 | $5,500 | $9,500 | Includes registers, insulation, balancing |
| Extensive rework (multi-level/poor access) | $6,500 | $9,800 | $12,000+ | Rerouting, new trunk lines, zoning, permits |
Total Price Buyers Typically Pay For Replacing Ductwork In A Single-Story Home
For a 1,200–2,000 sq ft single-story home, expect a total price of $2,500-$9,500. This assumes standard 8-10 registers, average attic access, and conventional materials (flex duct and metal trunk lines). Assumptions: Midwest labor rates, standard materials, normal access.
Per-unit breakout for that scenario: main trunk replacement $8-$14 per linear ft, branch flex ducts $4-$9 per linear ft, new register $25-$75 each, balancing and sealing $200-$600.
How Ductwork Quotes Break Down By Materials, Labor, and Equipment
Material and labor usually split roughly 50/50 on moderate jobs; equipment and disposal add the rest.
| Materials | Labor | Equipment | Delivery/Disposal | Contingency |
|---|---|---|---|---|
| $300-$3,500 (sheet metal, flex, insulation) | $400-$4,500 ( typical) | $75-$500 (tools, lifts) | $50-$400 (haul, dumpsters) | $200-$1,000 (unexpected access or repairs) |
Which Site Variables Change The Final Duct Replacement Quote Most
Access and linear footage are the two biggest price drivers: attic access vs inside walls and total duct linear feet. Examples: jobs under 200 linear ft often fall in the low-to-average range; jobs over 400 linear ft push into the high range due to time and material.
Other numeric drivers: number of registers (under 8 vs 12+), number of levels (single vs multi-story adds $1,000-$3,500), and duct diameter—large metal trunks cost $10-$20 per linear ft more than small trunks.
How Material Choices—Sheet Metal, Flex, Or Duct Board—Affect Price
Choosing flex for branches and sheet metal for trunks gives the best cost-performance balance for most homes. Typical pricing: flex duct $4-$9 per linear ft, galvanized sheet metal $8-$18 per linear ft, insulated duct board $6-$12 per linear ft. Higher-grade spiral duct runs $12-$25 per linear ft.
Durability and leakage: sheet metal has lower leakage but higher labor; flex is cheaper but may need more supports and careful installation to avoid performance loss.
Practical Ways To Cut The Price When Redoing Ductwork
Limit scope and prepare the site: patching and sealing existing runs, replacing only failed sections, and clearing attic access save significant money. Strategies: bundle with an HVAC tune-up, replace only trunk lines, or convert close-by runs rather than full system replacement.
Other cost-reduction moves: schedule work off-season for lower labor rates, provide contractor access (remove insulation, clear attic), and accept standard register styles instead of premium grilles.
How Regional Differences And Seasonality Change Duct Replacement Pricing
Expect 10%-30% higher prices in coastal and high-cost urban areas compared to rural Midwest rates. Example deltas: Northeast/West Coast +15%-30%, Southeast/Midwest -5%-10% relative to national average. Peak HVAC season (spring/fall) can add rush premiums of $200-$800 on top of quoted prices.
Assumptions: pricing comparisons assume similar job scope, materials, and house size.
Common Add-Ons, Permits, And Time Estimates That Increase The Final Invoice
Allow for permit fees, duct cleaning, and balancing when budgeting—these add $150-$1,200 to most jobs. Typical time: partial repairs 1-4 hours, single-run replacements 4-12 hours, full system replacement 1-3 days depending on crew size.
| Item | Typical Fee | When It Applies |
|---|---|---|
| Permit | $0-$400 | Local code or major rerouting |
| System balancing | $150-$600 | After replacement to tune airflow |
| Duct cleaning | $200-$800 | Older systems or mold/dust concerns |
| Emergency/rush | $200-$900 | Service needed within 24-48 hours |
Sample Real-World Quotes To Compare When Getting Estimates
Comparing three realistic quotes helps buyers spot missing line items and unreasonable low bids.
| Scenario | Specs | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Repair Only | Patch 3 leaks, 6 registers | 2-4 hrs | Labor $75/hr, materials $150 | $150-$450 |
| Partial Replace | 30 linear ft trunks, flex branches | 8-12 hrs | Trunk $12/lf, flex $6/lf | $900-$2,200 |
| Full Replace | 1,600 sq ft, 12 registers, attic work | 16-36 hrs | Mix $8-$14/lf | $4,800-$8,800 |