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AC ductwork replacement will usually cost around $3,200 to $5,000. The cost is determined by factors including the square footage size of your home, where the ductwork will need to be installed or replaced, and the number of vents needed.  

The cost of the duct material can vary by region and is subject to the type of material, its specifications such as inside diameter, the linear footage and whether it is insulated or non-insulated. Here is an example of ductwork material costs 

• Flex duct replacement costs range from $39.95 to $170.00 for 25 feet of R 4.2 insulated material with a 4-inch to 18-inch inside diameter 


• Duct board replacement costs for 60 linear feet for a home with R6, 8-inch diameter flexible polyester material may range from $7.03 to $10.10 per linear foot. 

Ductwork installation can be done as a DIY project should you feel you are capable of handling it. However, you will want to have some experience doing this kind of HVAC installation project, if it’s done incorrectly it can end up costing quite a bit more than the price it would have been to have a professional come in and replace the ductwork efficiently and correctly.

If the area where you need to install ductwork is in an area that is hard to get to, we highly suggest hiring a professional to complete the ductwork replacement or installation instead. Being able to access your home’s ceiling will be necessary for ductwork replacement. 

Sizing duct work on your own can be a tedious and complicated task. Sometimes it’s best to leave it to a ductwork replacement company to get the most accurate sized duct work that works perfectly with your central AC unit and furnace to regulate home temperatures efficiently. You need to know the following: 

• Square footage of your home. 


• Square footage of each individual room in your home. 


• Cubic feet per minute calculations (explained below.) 


• Duct’s Sizing Friction Loss Rate 

HVAC systems work a lot more efficiently when the ductwork you use is the right size for your home. Install duct sizes that are too small, and your system will have to work harder to keep your home heated and cooled. If your duct sizing is too big, the velocity will be compromised, meaning you may not be able to feel it through the air vents. 

Use our ductwork sizing calculator and guide to learn more. 

Installing or repairing AC duct unit can become an urgent situation when your home’s temperature is not being maintained efficiently. A ductwork installation can become a pricey HVAC project and you want to make sure your ductwork contractor is qualified and reliable before committing to any job. 

Here are a few things you can do to start  your search for a reliable ductwork installation contractor in your area: 

• Ask your family and friends for a recommendation on someone they have used in the past and what kind of experience they had with local contractors. 


• Check the Better Business Bureau site for local AC installer ratings. 


• Let Modernize help you find the best contractor for your AC ductwork installation job and help you compare quotes from installers in your area. 

Yes, it is always good to hire a licensed or certified HVAC professional as they have proven work skills and experience. Working with them will ensure that both major and minor details of the projects will be taken care of efficiently. 

At Modernize, we perform regular quality checks with our contractors to maintain standards. This includes  

• Reviewing business profiles and customer feedback received. 


• Performing background checks on contractor companies. 


• Local licenses, certificates and policy adherence needed by contractors. 

We quickly and easily connect you with trusted local hvac repair contractors so you can get real quotes, compare prices, and hire the best fit for your hvac project.