How often should I replace the ductwork in my house?

Author: Taryn Medhurst  |  Last update: Wednesday, April 22, 2026

How long should ductwork last? You should replace your ductwork every 15 years because the materials deteriorate over time, impacting HVAC performance and indoor air quality.

How do I know if my ductwork needs to be replaced?

10 Tell-Tale Signs Your Home Needs New Air Ducts
  1. Old Age. Just like any other equipment, the ductwork system also gets old. ...
  2. Strange Noises. ...
  3. Increased Utility Bills. ...
  4. Poor Air Quality. ...
  5. Hot and Cold Spots. ...
  6. Dirty Ducts. ...
  7. Poor Performance of a New HVAC Unit. ...
  8. Punctures and Dents.

Is replacing ductwork worth it?

Replacing the ducts helps eliminate contaminants and promotes healthier air throughout your home. Safety concerns associated with old or damaged ducts, such as fire hazards or backdrafting, can be addressed by replacing the ductwork and ensuring proper ventilation.

Should 20 year old ductwork be replaced?

Visible Damage

Over time, ducts may develop holes and cracks, resulting in a loss of conditioned air. While minor damage can be repaired, extensive damage in ductwork over 15 years old may warrant duct replacement.

What is the life expectancy of ductwork?

Ductwork has a maximum lifespan of 20-25 years, and starts to deteriorate around year 15. If your ductwork is more than 15 years old, you may need to have the ductwork inspected to see if it is time to replace it. If it is older than 25 years, you almost certainly need to replace the ductwork.

Do I have to replace my ductwork when I get a new air conditioning system?

How much should it cost to replace ductwork?

Duct replacement costs typically range from around $20–$60 per linear foot, based on our team's market research. For example, if your home has 100 feet of ductwork, a complete replacement can cost between $2,000 and $6,000.

How do I know if I have bad ductwork?

Visible damage or problems

Look for cracks and gaps in the joints, seams, and connections of your ductwork. Holes in these areas increase air loss, higher energy consumption, and draw in dust, pollen, and other particles.

Does homeowners insurance cover ductwork?

Your homeowner's insurance won't cover cleaning, repairing or replacing your ductwork. What does a home warranty cover when it comes to AC units and ductwork?

Can I replace ductwork myself?

However, DIY ventilation replacement is a task you should leave to an HVAC expert. Doing this task on your own isn't recommended because: Faulty installation will waste energy. Air leaks can cause your utility bills to rise.

How often should ducts be cleaned?

Experts advise having your air ducts cleaned every 2 to 3 years to prevent many maintenance and health problems before they start. However, homes with pets or children with allergies should have their air ducts professionally cleaned more frequently than the recommended average.

Is it better to clean or replace air ducts?

The EPA says regular ductwork cleanings are typically unnecessary. You'll want to get your ductwork cleaned if you have mold or pests. Replace your ductwork if you have major damage or an extreme mold infestation.

How long does it take to replace ductwork in a house?

The time it takes to replace air ducts in a house depends on the size of your home and the complexity of the duct system. Most residential jobs can be completed within one to two days. During our initial assessment, we'll provide a more accurate timeline based on your specific situation.

How much does it cost to check for duct leaks?

The average duct leakage test costs $325, though most homeowners spend between $115 and $450 depending on home size and ductwork accessibility. However, several other factors can influence what you'll pay.

Is replacing ductwork messy?

The Mess Is Minimal

If you don't have ducts, the spots that will see the most change are the closets and the attic, where we'll be running the ductwork. We'll have to cut a few holes in your ceiling to install vents and returns, but that's a very minor thing to do to drywall.

How can I tell how old my ductwork is?

Finding the Manufacturer Date on Your Commercial HVAC

Sometimes the manufacturer birthdate will be listed as MFR DATE. If that is the case, then you know the age of the equipment. If the MFR DATE isn't listed then look at the model and serial number that is given specifically for each piece of equipment.

Does replacing ductwork increase home value?

Yes, installing a new HVAC system can increase your home value by 5% to 7% with a return on investment (ROI) of about 30%. This projected increase is especially true if you replace your current setup with an energy-efficient system, providing additional benefits to future buyers in the long run.

What is the cost to replace ductwork?

The average cost of ductwork installation is from $1,400 to $5,600. ¹ You can expect to pay $25 to $55 per linear foot. 2 No two ductwork replacement projects are identical, as every home has different requirements.

Should ductwork be replaced after 20 years?

Key Takeaways. Ductwork typically requires replacement every 10-15 years, and delaying this can compromise airflow and energy efficiency. Visible and subtle signs, including excessive dust, strange noises, and increases in energy bills, can indicate deteriorating ductwork that needs repair or replacement.

Do you have to tear out walls to replace ductwork?

In many situations, ductwork can be replaced without ripping out walls. There are ways to access the ducts, such as through your attic or basement, without taking down any existing walls. In some instances, though, small areas of the wall may need to be removed in order to access the ducts.

How much does a new HVAC system cost?

According to HomeGuide.com, the average cost to replace the HVAC units is $5,000 to $11,000; to replace the units with ductwork runs between $7,000 and $16,000 in total.

Does HVAC system include ductwork?

This system is responsible for heating and cooling your home and includes products like furnaces, air conditioners, heat pumps as well as ductwork, thermostats and other home comfort controls. While the world of HVAC might seem complicated, it doesn't have to be confusing for homeowners.

How long do AC units last?

While every unit is different, and every homeowner has a different understanding of when their central air conditioner is broken beyond repair, it's fair to say that, with proper maintenance and care, you can expect a good 15 to 20 years of cooling from a new high efficiency air conditioning system.

How do you know if your ductwork needs to be replaced?

Signs That You Need Air Duct Replacement
  1. Noisy HVAC Operation. ...
  2. High Energy Bills. ...
  3. Uneven Heating or Cooling. ...
  4. Having A Dusty Home. ...
  5. Smelling Mold and Mildew in Your House. ...
  6. Having A Problem with Pests. ...
  7. Having Respiratory Problems. ...
  8. Seeing Debris Around The Vents.

How often do air ducts need to be cleaned?

Just like any other HVAC system, air ducts require regular maintenance to ensure maximum efficiency. As a general rule of thumb, the National Air Duct Cleaners Association (NADCA) recommends air duct cleaning every 3 to 5 years. With certain methods, that cleaning recommendation can be extended to 6 to 8 years.

How long does it take to replace ductwork?

The ductwork project takes between 1 to 4 days. The ductwork is mostly impacted by the size of the project. If there are no unexpected challenges, then the system will take only a few days to install. In some cases, the installation can be completed in one day.

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