Curious about air duct cleaning costs in Denver, CO? Get insights into pricing factors, benefits, and how to tell when it’s time for a good cleaning.
How Much Does Air Duct Replacement Cost in Denver? [2026 Data]
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Highlights
Air duct replacement costs will be higher for larger homes.
Hard-to-access ducts in attics and crawl spaces cost more to replace.
Galvanized steel sheeting is the most common duct material in Denver homes.
The average air duct project in Denver will have a permit fee of $20 to $35.
When it’s time to upgrade your ductwork, you can expect to spend $588 on air duct replacement in Denver, CO. Most air duct replacement projects will range from $278 to $912, depending on factors like your home’s square footage and the type of ductwork you have. Denver homeowners rely on reliable HVAC and ductwork to deliver cool air in the hot summers and warm air during the long, harsh winters, so an efficient system is a must-have.
Air Duct Replacement Cost Factors
When it turns out that you don’t just have dirty air ducts but old, leaking ductwork that needs to be replaced, there are several cost factors to consider. From the size of your home to the type of ductwork you need, here are some factors that influence the cost of installing new air ducts in Denver, CO.
Size
The size of your home directly affects air duct replacement costs. Larger homes require more materials and labor to replace the entire duct system. On average, the cost ranges from $2,000 to $5,000 for a small- to medium-sized home. However, duct replacement can run as low as $1,400 for smaller homes and as high as $9,000 for larger homes. Here’s how the size of your home affects duct replacement costs:
| Home Size (Sq. Ft.) | Cost |
|---|---|
| 1,000–2,000 | $588–$1,800 |
| 2,000–3,000 | $1,800–$5,000 |
| 3,000–4,000 | $5,000–$9,000 |
| 4,000+ | $9,000+ |
Duct Location
If only specific sections of your ductwork need replacement, such as in a renovation project, costs will depend on the location of the damaged or worn ductwork. Replacing ducts in hard-to-reach or concealed areas—like attics, basements, ceilings, walls, or crawl spaces—can increase labor costs. Here’s how the location of the ducts could affect their cost:
| Duct Location | Cost |
|---|---|
| Exposed | $588–$3,000 |
| Wall or ceiling | $912–$4,000 |
| Basement | $1,800–$3,100 |
| Attic | $2,200–$5,600 |
| Crawl space | $3,000–$7,300 |
Duct Material
The material you choose for your replacement ducts affects both their cost and longevity. The most commonly used duct material in Denver, CO, is sheet metal made from galvanized steel.
Sheet metal ducts are durable but pricey. Flexible ducts, on the other hand, are more affordable but may need to be repaired or replaced sooner. Here’s a breakdown of air duct replacement costs based on duct material:
| Duct Type | Cost per Linear Foot |
|---|---|
| Flex (non-insulated) | $1–$3 |
| Flex (insulated) | $2–$4 |
| Fiberglass | $4–$6 |
| Fiberboard | $4–$6 |
| Metal sheet | $7–$13 |
HVAC Pro Costs
Hiring an HVAC pro for air duct replacement makes up 60% of the project total, or about $50 to $110 per hour. Many jobs take five to seven hours to complete, although hard-to-reach air ducts will take longer to replace.
While some DIY projects can save you money on home repairs, it’s always best to leave air duct replacement to the pros. Not only can mistakes lead to costly leaks and quicker repair needs, but DIYing could also void your home insurance policy coverage and your HVAC warranty.
Pro Tip
Quality ductwork will increase the efficiency of your HVAC, sometimes by 20% to 30%. This is because there is reduced air leakage due to better insulation and more optimized airflow. This means your HVAC doesn't have to work as hard to keep the desired temperature, so it uses less energy.
Permits
Your HVAC pro will include the cost of permits in the project total and can handle the application process for you. Building permits from the City of Denver depend on project value.
Projects up to $500 have a $20 permit fee.
Projects from $501 to $2,000 have a $35 permit fee.
Projects of $2,001 to $25,000 have a $35 fee for the first $2,000 in project value, plus $8 for each additional (or fraction of) $1,000, in addition to a plan review fee of 50% of the permit fee.
Let an HVAC repair pro in Denver, CO, handle the air duct replacement so you can kick back and enjoy your more efficient heating and cooling system.
Additional Pros to Consider Hiring
During and after the air duct replacement, you may also need to pay for mold or asbestos testing and removal, insulation installation, and drywall repair. Here are the average costs of these projects for Denver homeowners:
Drywall repair cost: $275–$760
Mold remediation cost: $1,110–$3,120
Asbestos testing cost: $200–$380
Insulation installation cost: $870–$1,980
Does Air Duct Replacement Increase Home Value?
Living in a city with hot summers and long, cold winters, Denver homebuyers prioritize new, reliable HVAC and duct systems. Whether you clean or replace your ducts, efficient ductwork and an HVAC system that is in good condition can make your home more attractive to potential buyers. Even if you’re not selling, new ductwork ensures your HVAC runs smoothly and keeps your energy bills in check.
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 survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from 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.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
Heating and air conditioning services reviews from real Angi homeowners in Denver, CO
4.4★ avg. • 925 total reviews
- Paul D.
M&H Air helped upgrade Gas furnace/ Forced air heating system, by adding new ducts and vents in basement to help create more comfortable living space. Also has provided great preventive maintenance service to my Heating and A/C system!
M & H Air, LLC - Jeremiah M.
⭐️⭐️⭐️⭐️⭐️ I had an amazing experience with High Altitude Heating and Air Conditioning, LLC! Our technician, Bryson, was absolutely fantastic. He arrived right on time, was extremely professional, and quickly diagnosed and fixed the issue. Within no time, my house went from unbearably hot to...
High Altitude Heating & Air Conditioning LLC - Elizabeth S.
This was my first time using this company- they not only checked my air conditioning system but found another leak that they are going to help take care of very quickly
Applewood Plumbing, Heating & Electric - Gary C.
I'm amazed by the professionalism and expertise of this air conditioning service. Their thorough cleaning of my duct vents has made a noticeable difference in the air quality of my home. Highly recommend!
Safe House - Tig G.
Not only did the crew of Behold, Tristan and Kendrick, install a new furnace, but they also installed the Air Conditioning unit, all in one day! They were professional, thorough, friendly and diligent workers. Would hire them any time.
Behold Heating & Cooling Services - Amy C.
I have actually hired A Family Friend on multiple occasions for heating/furnace and AC and they have always been fabulous! Cory is great at communication, very reliable, trustworthy and fairly priced! Would highly recommend!
A Family Friend Heating and Cooling LLC - Beverly F.
I loved the quality of their work. Bothe my air conditioner and furnace was replaced. They were very reliable and easy to work with. I was extremely satisfied.
Foundations Mechanical Services - Daniel G.
We purchased our Furnace/Air conditioning unit combo in 3/2022 by Mountain Breeze Heating & Air, Inc. and we could not have been more satisfied and extremely happy with our decision. First off, the astonishing prices they offer, to the friendliness and knowledgeable customer service...
Mountain Breeze Heating & Air, Inc. - Nellie T.
Tri Peaks Air was very quick to respond and got my heater back up and running. Very professional. They are now my go to. Highly recommend!
Tri Peaks Air - Patrick B.
I highly recommend 303 Heating & Air. Tom showed up first thing the morning after I requested a quote. He told me exactly what was wrong, explained things to look out for in the future and didn't try to upsell me to buy a new furnace like others did without even looking at it. He was back...
303 Heating & Air, Inc.
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