Are your energy bills too high? Is your home too hot in some rooms and too cold in others? If so, your air ducts might be the problem. Replacing old or damaged ductwork can help make your home more comfortable and save you money.
But how much does air duct replacement cost ? In this blog, we’ll break it down for you in simple terms.
What Is the Average Air Duct Replacement Cost?
The average cost to replace air ducts in a home is about $1,250. But the price can be anywhere from $450 to $2,200, depending on your home and what needs to be done.
What Affects the Price of Air Duct Replacement?

1. Size of Your Home
Bigger homes need more ductwork. That means more materials and more labor, which means higher costs.
- Small home (1,000–1,500 sq ft): $450–$800
- Large home (3,500–4,000 sq ft): $2,200–$5,500
2. Type of Ducts
There are different kinds of ducts, and each type has a different cost:
- Flexible Ducts: Easy to install and cheaper – $1,800 to $4,600
- Sheet Metal Ducts: Stronger but more expensive – $2,900 to $8,000
- Duct Board: Insulated and quiet – $1,500 to $4,300
3. Labor Costs
You also pay for the people who install the ducts. Labor usually costs $25 to $55 per foot of duct.
If it’s hard to reach the ducts, like in small attics or tight spaces, the price can go up.
4. Extra Parts
Sometimes you also need to replace or add vents, covers, or insulation. This can add a few hundred dollars to the final price.
When Should You Replace Air Ducts?

You may need new ducts if:
- They are more than 15–20 years old
- You notice holes, rust, or cracks
- Airflow is weak in some rooms
- Your energy bills suddenly go up
- You hear whistling or banging sounds
Should You Repair or Replace?
Sometimes, fixing your ducts is cheaper than replacing them. But if your ducts are really old or badly damaged, replacement is better in the long run.
Cost to Repair Ducts:
- Basic repairs like sealing leaks can cost $835 to $3,000
- It depends on how much work is needed
Cost to Replace Ducts:
- Full replacement costs around $1,250 on average
- You get better airflow and lower bills
Ways to Save Money on Duct Replacement
- Get 2 or 3 quotes from different HVAC companies
- Do it during off-seasons like spring or fall when prices are lower
- Replace only the worst parts if the rest of your ducts are still okay
- Bundle services (like replacing your HVAC system and ducts together)
Is It Worth It?

Yes! New ducts can:
- Make your home more comfortable
- Improve air quality
- Lower your energy bills
- Help your HVAC system work better
It’s a good investment, especially if your current ducts are old or leaking air.
Conclusion
Replacing air ducts can cost between $450 and $2,200, depending on your home size, duct type, and labor. The average cost is about $1,250. While it might seem like a big cost at first, new ducts can save you money and make your home feel much better.
If your air feels stuffy, some rooms don’t stay cool or warm, or your power bill keeps going up — it might be time to check your ductwork. For professional, reliable, and thorough air duct cleaning services, trust Vent Guys to get the job done right. Visit Vent Guys to learn more about our services.
FAQs
1. How long do air ducts last?
Most air ducts last 15 to 20 years. After that, they can leak or get damaged.
2. Can I replace ducts myself?
It’s possible, but it’s not easy. It’s safer and smarter to hire a pro.
3. How can I tell if my ducts are leaking?
Look for rooms that stay hot or cold, higher energy bills, and odd noises from your vents.
4. Will new ducts lower my power bill?
Yes! If your old ducts were leaking, new ones can save you money on energy every month.
5. Do I need to replace my whole system too?
Not always. If your HVAC system is in good shape, just the ducts may need work.