The average cost to replace ductwork is $1,400 to $5,600, depending on the house size. Air duct installation costs $25 to $55 per linear foot or $270 to $500 per duct. HVAC ductwork repair costs $200 to $700 for minor leaks.
Ductwork lasts 10 to 20 years on average before it needs replacing. Most ducts need work when replacing HVAC systems more than 15 years old or when upgrading to bigger or higher-efficiency units.
Signs to repair or replace ductwork:
Replacing ductwork takes 1 to 2 days on average or up to 4 days for larger homes or complex projects. Installation time depends on the home's size, age, number of HVAC units, duct type, and crew size. Allow more time when wall or ceiling repairs are necessary.
Ductwork is a large piping system that sends heated or cooled air from HVAC units throughout the home. Duct vents are long tubes or rectangular sheet-metal channels made of fiberglass, steel, PVC, or aluminum. These rigid or flexible ducts are in ceilings, attics, basements, and crawl spaces.
There are three main types of ductwork:
You should replace ductwork when replacing an AC unit if the ducts are moldy, more than 20 years old, or cracked. AC upgrades often require new ductwork to fit bigger systems properly. HVAC installers inspect ducts first and recommend cleaning, repairing, or replacing ducts as needed.
DIY ductwork replacement is illegal in most states without a license. Hire certified HVAC contractors for duct installation and repairs.
Start by searching our list of ductwork companies, then compare reviews and costs. After finding and contacting services:
Ask to see their certifications from:
After asking questions and verifying their credentials, hire the best ductwork installation contractors in your area.
When hiring a duct installer, ask them the following questions:
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Ask questions, confirm their availability, and hire the right pro when you're ready.