How Much Does It Cost to Reroute Ductwork? [2026 Data]

In 2026, the national average cost to reroute ductwork is $4,500. Most homeowners spend $1,500 to $9,000, with the spread driven by home size, duct run length, and the accessibility of your existing ductwork.

Ductwork Rerouting Cost Factors: What Affects the Price?

Several variables shape the total cost to reroute ductwork, and knowing them helps you build a realistic budget before work begins. The sections below break down how each factor affects your final price.

Duct Material

The type of ductwork material you choose is one of the most direct cost drivers, with prices ranging from $1 to $3 per linear foot for non-insulated flexible ductwork up to $13 per linear foot for sheet metal. Costs vary significantly depending on the material, as shown in the breakdown below.

Duct Length

The total length of new ductwork required directly affects your material costs, which run $1 to $13 per linear foot depending on the material type. Longer runs mean more material purchased, so minimizing unnecessary duct length where possible is one of the most straightforward ways to keep costs down.

Return Air Drop Replacement or Addition

A return air drop is the duct that channels air from your living spaces back to the HVAC system for reconditioning, and it typically includes filters that remove dust and contaminants to support indoor air quality. Modifying an existing return air drop adds $300 to $400 to your project cost. If your rerouting requires a second return air drop to be installed, expect that figure to roughly double.

Labor

Labor is a major portion of your total rerouting cost, with ductwork installers typically charging $5 to $10 per linear foot for labor alone. Projects involving hard-to-reach spaces, such as a small crawl space, can push labor costs toward the higher end of that range due to the additional time and specialized tools required.

Ceiling and Drywall Repair

Rerouting ductwork often requires opening up walls or ceilings to access the duct system, so repair costs should be part of your budget from the start. The cost of drywall repairs averages $150 to $330, while ceiling repairs can range from $300 to $1,200 depending on the extent of the work. Costs vary by repair type, as shown in the table below.

Mold and Asbestos Issues

Discovering mold or asbestos during a ductwork rerouting project can add significant unplanned costs, so scheduling an HVAC inspection before work begins is a smart way to surface any hazardous issues early. Testing and inspection costs range from $200 to $650 for mold and $250 to $700 for asbestos, while remediation and removal run considerably higher, from $450 to $6,000 for mold remediation and $700 to $2,200 for asbestos removal.

Permits

Obtaining the necessary permits is often a mandatory part of rerouting ductwork, and skipping this step can create compliance issues down the line. Your HVAC professional will typically be familiar with local permit requirements and can handle the application process on your behalf.

Why Should I Reroute My Ductwork?

There are various reasons why homeowners should consider rerouting ductwork. One of the most common reasons is poor placement. This happens when the original ductwork isn't configured optimally, which can cause certain spaces to lack proper heating, cooling, and airflow. 

Another reason to reroute ductwork is air leaks caused by worn-out areas and poorly connected ducts. Although patching leaks can help, rerouting is sometimes necessary to ensure the ductwork's position doesn't make it vulnerable to future leaks.

Rerouting your home's ductwork has a huge benefit of maximizing energy efficiency, which translates to long-term cost savings.

Other perks of rerouting ductwork include improved household air quality, moisture control, and more comfortable temperature control.

Why You Should Hire an Air Duct Installer

Hiring a duct installer near you accounts for 75% to 85% of the cost of installing an air duct. Although this accounts for the majority of the installation cost, you'll want to hire a professional to ensure it's done correctly, thereby avoiding harm to your indoor air quality.

Here's why it's ideal to hire an air duct pro

Air duct installation is a multifaceted project, so here's why you should hire a pro:

• A pro can determine if your old air ducts were installed poorly and determine if rerouting the ductwork would improve airflow.

• Old air ducts can contain mold or asbestos, which are dangerous to remove and should be left to the pros.

• Rerouting ductwork may require opening up walls or ceilings to access the space, something a pro can get right the first time around, so as to lower your repair costs.

• Installing air ducts is a physically tedious, lengthy process, especially if it's difficult to access the ducts.

• You may need specialized tools to reach into smaller spaces, which is something a pro has on hand.

• Your professional is familiar with the steps required to obtain a permit for your area and will handle the permit application on your behalf.

• They're also aware of any local building regulations that need to be followed.

• High-quality ductwork can increase your HVAC system's efficiency by up to 30%.

Cost of Common Add-Ons

There are some common add-ons associated with the cost to move HVAC ductwork, and these additions can enhance the efficiency of your HVAC system or improve indoor air quality.

HVAC Inspections

HVAC inspections cost $70 to $500 depending on your home's size and system type, and you may need one before rerouting to check for harmful substances or after to confirm your system is running efficiently. Scheduling an inspection at both stages gives you the clearest picture of your system's health throughout the project.

Cleaning Existing Ductwork

Air duct cleaning costs $150 to $780 depending on the size and type of your ducts and the number of air vents in your home. Since your ducts are already being accessed during a rerouting project, bundling a cleaning at the same time is a practical way to improve air quality and system efficiency without a separate service call.

Duct Insulation

Insulating any new ductwork keeps your system more energy efficient and helps prevent utility bills from climbing over time. Duct insulation costs $1 to $6 per square foot of ductwork, making it a relatively affordable upgrade to add while the work is already underway.

Adding Vents

Rerouting ductwork often means relocating an existing air vent or adding a new one to maintain consistent comfort and prevent hot and cold spots throughout your home. Adding a new air vent costs $250 to $500 per vent, so factor this into your budget if your rerouting plan changes where conditioned air is delivered.

How to Save Money on Rerouting Ductwork

To save money on ductwork rerouting, consider these cost-effective strategies:

• DIY where possible: If you have the necessary skills, tackle simpler tasks yourself, like adding duct insulation or moving air vents .

• Multiple quotes: Obtain quotes from multiple HVAC professionals to compare prices and ensure you're getting a competitive rate.

• Choose a more affordable duct material: Sheet metal is one of the most pricey duct materials, whereas fiberglass or flexible ducts cost less.

• Bundle services: If you have multiple HVAC needs—like air duct cleaning or HVAC inspection—bundling services with one provider may result in overall project cost savings.

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 extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on 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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