How Much Does Ductwork Repair Cost? [2026 Data]

In 2026, the national average starting cost for ductwork repair is $100, with most homeowners paying between $200 and $2,100 depending on the repair type, duct material, and where the problem is located in the home. If your technician needs to open walls or floors to reach the damaged ductwork, budget for the added cost of patching those surfaces as well.

Ductwork Repair Cost Factors: What Affects the Price?

Repairing your home's ducts is often the right call when they're aging, showing signs of bad ductwork, or losing efficiency, with most repairs falling between $200 and $2,100 depending on the repair type, duct material, and location. The repair type is the primary pricing driver, while the duct material determines how accessible and complex the fix will be. Where the ductwork sits in your home, whether in an open basement or buried inside walls, directly shapes how much labor the job requires.

Type of Repair

The type of repair your ductwork needs is the single biggest factor in what you'll pay, with costs ranging from $100 to $300 per vent for straightforward vent repairs up to $1,125 to $3,345 for mold remediation. Common mid-range repairs include leak sealing at $375 to $700, hole repairs at $150 to $400, and clog removal at $200 to $600. Rust or corrosion repairs run $200 to $500, though that damage often signals a larger ventilation problem that could push costs higher. Here is a breakdown of average repair costs by type:

Vent

A dented or otherwise compromised vent can allow too much or too little airflow, and adjustable vents may not operate correctly. Repairing or replacing damaged vents is pretty straightforward, and it costs between $100 and $300 per vent.

Leak

Vibrations, accidental bumping, corrosion, and age can all create leaky spots within the ductwork system. The cost to seal duct leaks of various types runs from $375 to $700, depending on accessibility and the scope of the work.

Hole

Discovering that your ducts have a hole or two in them is common, especially in flexible duct types. Movement, vibrations, vermin, and corrosion can all create holes, both large and small. Repair costs hover between $150 and $400.

Rust or Corrosion

Water and condensation can cause rust or corrosion in your home's ductwork. While the cost to repair this type of damage is between $200 and $500, the condition is often a sign of a bigger ventilation problem that could incur much higher costs.

Condensation

Condensation can lead to mold or mildew problems. If your ductwork is experiencing condensation inside or out, it's likely time to have your HVAC technician examine why it's happening. Often, repairs for the condition cost between $200 and $900. However, there may be more issues to contend with than the immediate problem.

Loose

Vibrations in the HVAC system and accidental damage can knock pieces of your home's ductwork loose, creating leaks or parts that simply don't work anymore. Repairing the situation costs about $100 to $450.

Damage or Collapse

Collapse damage results from ductwork being struck by something. However, flexible ductwork can collapse due to age and wear. Depending on the severity of the damage, expect costs of between $150 and $2,000 to put it all back together.

Clog

Dirty air filters or debris is another common duct problem. Removing clogs costs $200 to $600, which includes your duct pro locating the blockage.

Mold

Hiring a local indoor air quality tester can identify mold in your home's air. Often, mold may also be present in the ductwork system. If that's the case, expect mold remediation costs of between $1,125 and $3,345 to get things back to normal, safe levels.

Infestation

Critters within and around your home's HVAC ductwork can cause all kinds of damage. Additionally, they have to go to the bathroom somewhere. If that somewhere is in the HVAC system, your home's air quality could suffer. Rodent extermination costs between $ 175 and $615.

Here is a breakdown of average ductwork repair costs in 2026 by repair type:

Type of Ductwork

Ductwork falls into three main categories: rigid, flexible, and insulated flexible, and repair costs vary across each type depending on the material's vulnerability and how easily a technician can access the damaged section. Here is how repair costs break down by ductwork material:

Rigid

Despite its rigid nature, aluminum and steel solid-type ductwork is prone to several types of damage. Vibrations, bumping, and corrosion top the list of culprits, which can cause leaks, looseness, and collapse. Repair costs for rigid ductwork range between $300 and $2,100, depending on the type of damage and its extent.

Flexible

Flexible ductwork is common in modern homes and is excellent for routing through tight spaces. Unfortunately, that routing ability can also complicate repair work due to access issues. Subject to similar types of damage as rigid ducts experience, repair costs average from $100 to $800.

Insulated Flexible

Some flexible ductwork is insulated with various insulation types. Rodents seem to enjoy nibbling these types of materials in particular. However, insulated flexible ducts can also experience the same types of damage as other duct types and cost between $200 and $1,200 to repair.

Here is a breakdown of average ductwork repair costs in 2026 by material type:

Project Size

Your home's overall square footage does not directly drive repair costs, but the length of ductwork involved does, with pricing running $5 to $45 per linear foot depending on the duct type, the repair required, and where the duct sits within the home.

Ductwork Location

Where your ductwork is located within the home is a major cost driver because labor is billed by time, and harder-to-reach ducts take longer to access and repair. Ductwork location plays a major role in total cost, as shown in the breakdown below:

Basement

Duct repairs in basements can be really simple or quite challenging. The difference is whether or not the basement is finished and how easy it is to access the ductwork. For those reasons, costs for basement duct repairs can range from $200 to $3,000.

Attic

Repairing ductwork in an unfinished attic is the easiest place to do the work. Because most attic ducts are easy to reach without too much effort, the repair costs tend to average on the low end of the pricing scale. Expect to pay between $200 and $1,500 for the work.

Crawl Space

Because access can be an issue when repairing ductwork within a home's crawl space, the task can get expensive. Easily accessible crawl spaces can experience low repair costs, while working in difficult areas can raise the price. Crawl space duct repair costs anywhere from $300 to $2,500.

Under House

Ductwork underneath the house features relatively easy access. However, the height of the access space can be problematic and increase the cost of repairs. Expect to pay between $300 and $2,000 for under-house duct repairs.

In Walls and Floors

Most homes taller than a single story feature at least some lengths of ductwork located within walls or floors. Access is almost always an issue when trying to reach these ducts, and often, making holes will require repair afterward.

Additionally, diagnosing and finding the trouble spots can greatly increase the time it takes to complete the work, driving up the price of the job. Expect to pay between $400 and $3.500 on average for repair work. However, the price could be much higher in particularly difficult situations.

Mobile Home

Most mobile home ductwork is relatively accessible. However, many mobile homes feature exterior ducts wrapped in insulation, which could slow down the diagnosis and problem location processes. Mobile home ductwork repair falls between $200 and $1,800.

Here is a breakdown of average ductwork repair costs in 2026 by location within the home:

Maintenance Plans

Annual HVAC inspections and maintenance are a smart way to catch duct problems early and avoid costly emergency repairs, with the cost of HVAC maintenance running $175 to $350 per visit. Depending on how heavily your home relies on the system, scheduling this once or twice a year is a reasonable investment.

Labor

Labor is included in every ductwork repair estimate, with HVAC technicians typically charging $50 to $100 per hour for repair work.

Wall and Floor Repair

When a technician needs to cut into walls, ceilings, or floors to access ductwork, you will need to budget for those surface repairs on top of the duct work itself. Repair type plays a major role in total cost, as shown in the breakdown below:

Additional Repairs or Services

While a technician is already on site for ductwork repairs, it is a practical time to consider upgrades like duct insulation for improved energy efficiency or any other HVAC repairs that need attention, since bundling work can reduce overall costs.

• Duct insulation cost: $1,000 to $2,700

• Damper motor replacement cost: $250 to $450

• Filter change cost: $10 to $50

Crawl Space Encapsulation

If crawl space ductwork is suffering from water or condensation damage such as rust or corrosion, encapsulating the crawl space can address the root cause and protect both the HVAC system and your home's structure. It is not a low-cost solution, but it can prevent recurring damage that would otherwise require repeated repairs.

• Crawl space encapsulation cost: $5,000 to $15,000

Ductwork Repair vs. Replace

In most cases, repairing existing ductwork is less costly than replacing the entire system. However, when a section sustains significant damage, replacing just that part is often worthwhile. The cost to replace ductwork averages between $1,400 and $5,600, while repair costs about $2,100.

On the other hand, if your current duct system is over 20 years old and requires frequent repair, it's likely more cost-effective to simply replace it instead of continuing to pay to fight it.

Why You Should Hire a Ductwork Repair Pro

While DIY is a great way to save on most home projects, ductwork repair is best left to the pros to ensure your system is protected. In many places, HVAC work beyond simple filter changes must be performed by locally licensed HVAC professionals. Local duct installation and repair pros near you can show up to diagnose and fix the issue using the proper tools and materials.

Here's why it's ideal to hire a duct repair pro

Before you crawl into your home's ductwork, consider the following:

• Any work you perform may not be in compliance with code.

• Improper duct repairs create fire risks in your home.

• HVAC systems can contain hazardous materials that you might breathe in or release into your home's air.

• Incomplete or improper duct repair, not covered under warranty, can damage your HVAC system and cause premature failure.

Ways You Can Save Money While Repairing Ductwork

When your ductwork needs repair, there are a few tricks to help control prices.

• Clear the area around where the technician will be working. Doing so can minimize the time it takes to access the ductwork in need of repair, perhaps lowering your invoice amount.

• In many cases of damaged vent covers only, you may be able to simply pick up a new one at a home center retailer and replace it yourself.

• Having a pro perform annual maintenance on your system can greatly reduce surprise duct repair situations.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We’ve surveyed thousands of real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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