Average Ductwork Replacement Cost
Replacing HVAC ductwork typically costs $3,000 to $8,000, depending on the size of the home, duct material, and accessibility of the existing duct system.
Homes with damaged, leaking, or poorly designed ducts may benefit from a full replacement to improve airflow and energy efficiency.
Many homeowners replace ductwork when upgrading their HVAC system. In those situations, it can be helpful to review HVAC replacement cost when estimating the total project budget.
Ductwork Replacement Cost by Home Size
The amount of ductwork required usually depends on the size and layout of the home.
| Home Size | Typical Ductwork Replacement Cost |
|---|---|
| 1,000 sq ft | $3,000 – $4,500 |
| 1,500 sq ft | $3,500 – $5,500 |
| 2,000 sq ft | $4,000 – $6,500 |
| 2,500 sq ft | $5,000 – $7,200 |
| 3,000 sq ft | $6,000 – $8,000 |
Homes with multiple floors or complex layouts may require additional duct runs, which increases installation labor.
Ductwork Replacement Cost by Duct Type
Different duct materials have different replacement costs.
| Duct Type | Typical Cost Per Linear Foot |
|---|---|
| Flexible duct | $10 – $25 |
| Sheet metal duct | $20 – $40 |
| Fiberglass duct board | $15 – $30 |
Metal duct systems typically last longer and provide better airflow, but they cost more to install.
Signs Your Ductwork May Need Replacement
Replacing ductwork is often recommended when homeowners experience:
- uneven heating or cooling between rooms
- high energy bills
- excessive dust inside the home
- damaged or deteriorating ducts
- poor airflow from vents
Old or damaged ducts can reduce the efficiency of heating and cooling systems.
Ductwork Replacement vs Duct Repair
Some HVAC systems only require partial duct repairs instead of full replacement.
| Project Type | Typical Cost |
|---|---|
| Duct repair | $500 – $2,000 |
| Partial duct replacement | $1,500 – $4,000 |
| Full ductwork replacement | $3,000 – $8,000 |
A professional HVAC inspection can help determine whether repair or replacement is the better option.
Homeowners considering system upgrades may also compare air conditioner installation cost or heat pump installation cost when planning larger HVAC projects.
Factors That Affect Ductwork Replacement Cost
Several factors can influence the total project price.
Accessibility
Ducts located in crawl spaces, attics, or unfinished basements are usually easier and cheaper to replace.
Home Layout
Homes with complicated floor plans may require longer duct runs and additional vents.
Insulation and Sealing
Sealing and insulating ducts can improve HVAC efficiency but may increase installation costs.
HVAC System Size
Larger heating and cooling systems require larger ducts to maintain proper airflow.
Homeowners installing new duct systems may also review HVAC installation cost per square foot to estimate the total cost of a full system upgrade.
FAQ
How much does ductwork replacement cost?
Most ductwork replacement projects cost $3,000 to $8,000, depending on home size and duct material.
Is replacing ductwork worth it?
Replacing damaged or leaking ducts can improve HVAC efficiency, reduce energy bills, and improve airflow throughout the home.
How long do HVAC ducts last?
Most duct systems last 15 to 25 years, though poor installation or damage can shorten their lifespan.