Discover the factors influencing air duct replacement cost in Washington, D.C. Learn how to save money and make an informed decision for your home's comfort.
How Much Does Air Duct Replacement Cost in Baltimore? [2026 Data]
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Highlights
Sheet metal is the most common air duct material in houses, but it has the highest price.
Ductwork in crawl spaces costs the most to replace, and ductwork in exposed areas costs the least.
Labor takes up 60% of the total cost to replace air ducts, while materials make up the other 40%.
Air duct replacement costs in Baltimore, Maryland, fall around $1,078 on average, but you could see prices ranging from $458 to $1,699 depending on your home’s size, the layout of your air ducts, and the materials you choose. Permit fees can also increase your costs, while labor takes up a bulk of the cost to replace air ducts.
Air Duct Replacement Cost Factors
The biggest factors that influence air duct replacement costs in Baltimore, MD, include the size of your home, the location of your ducts, and the duct materials. Below is a closer look at how each of these factors affects your final cost.
Size
The size of your home directly affects air duct replacement costs. Larger homes require more duct materials and labor to replace the entire air 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:
| House Size in Square Feet | Average Cost |
|---|---|
| 500 | $700–$1,100 |
| 1,000 | $1,400–$2,300 |
| 1,500 | $2,100–$3,400 |
| 2,000 | $2,800–$4,500 |
| 2,500 | $3,500–$5,600 |
| 3,000 | $4,200–$6,800 |
| 3,500 | $4,900–$7,900 |
Inventory data from Realtor.com shows that the median household size across the country is 1,875 square feet. For the Baltimore area, homes are just over 1,850 square feet, putting them slightly smaller on average. Prices for air duct replacements in Baltimore are close to national averages as a result.
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. Baltimore homes can have ducts in many different locations. 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:
| Location | Average Cost |
|---|---|
| Attic | $2,200–$5,600 |
| Basement | $1,800–$3,100 |
| Crawl space | $3,000–$7,300 |
| Ceiling | $1,000–$4,000 |
| Exposed | $700–$3,000 |
| Wall | $1,000–$4,000 |
Duct Material
The material you choose for your replacement ducts affects both their cost and longevity. The most commonly used duct material in Baltimore, MD, is sheet metal (aluminum or 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. Since Baltimore experiences subtropical temperatures, with high heat and humidity during the summer months, it benefits homeowners to choose a water-resistant material like metal rather than fiberglass, insulated flexible, or fiberboard ducts. With this in mind, here’s a breakdown of air duct replacement costs based on duct material:
| Duct Material | Average Cost per Linear Foot | Pros | Cons |
|---|---|---|---|
| Flexible (non-insulated) | $1–$3 | Lowest cost | Fragile, energy inefficient |
| Flexible (insulated) | $2–$4 | Low cost, increased energy efficiency | Fragile, prone to mold |
| Fiberboard | $4–$6 | Quiet, comes insulated | Poor airflow efficiency, less durable |
| Fiberglass | $4–$6 | Durable, quiet | Loose fibers can enter airway, prone to mold |
| Sheet metal | $7–$13 | Mold-resistant, durable, high efficiency | High cost, noisy |
HVAC Pro Costs
Hiring an HVAC pro in Baltimore, Maryland, runs between $50 and $110 per hour. Some pros prefer to charge by the project, charging 40% for the materials and 60% for the labor. This means that, for a $1,000 project, you’re paying $400 on materials and another $600 on labor.
You’ll find that HVAC technicians with more experience have higher costs than less experienced technicians. For complex air duct replacement work in an older home, go with an experienced pro who does ductwork. For smaller projects, you can save costs by working with a newer professional.
Permits
Baltimore technicians can also help you acquire the necessary building permits. According to the Baltimore City Department of Legislative Reference, the cost for a building permit starts at $50 for a one- to two-family dwelling, or $0.30 per square foot of altered space.
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.
Does Air Duct Replacement Increase Home Value?
If your home’s air duct system is very old, it can decrease your home’s value. The opposite is also true—replacing it can help improve your home’s value. However, most homes don’t see a noticeable increase in home value for an average air duct replacement project. If you’re hoping to see a high return on your investment, it’s best to work with a Baltimore property appraiser or energy auditor to determine which parts of your home will give you the biggest payoff.
For example, upgrading an old HVAC system has an ROI of 5% to 7%, so upgrading it alongside your air ducts can make a bigger difference on the value of your home after all is said and done.
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 Baltimore, MD
4.6★ avg. • 1.1k total reviews
- Yosi A.
Great company came serviced my unit and got my heat working
VICTORY HVAC LLC - Ellen R.
Good morning. We woke up yesterday with no heat, brrrrr. So we looked for a local business and we found this company. Mike came out the same day, the part we needed was around the airport he got it, came here this morning at 7:30, like he said and we now have heat! Mike is honest,...
All Around Heating and Cooling LLC - Mike G.
My HVAC air conditioning was not cooling my condo. The technician climbed a ladder to check my outdoor unit on the roof and noticed that the outdoor unit was not coming on. He discovered a loose wire and tightened it to fix the problem. He also checked the unit pressure and found that the...
SRM MECHANICAL LLC - Paul H.
During a heat wave, my air conditioner frozen, so I frantically called Evolution Heating & Cooling. Quickly upon arrival, their expert assessed the situation and promptly set out to resolve it. A clogged filter and low refrigerant were the reasons. He fixed everything that needed fixing and...
Evolution Heating & Cooling, LLC - Carla H.
I was blown away by how much cleaner the air in my home feels after Space Air Duct Cleaning came through. They were thorough and very respectful of my space. Great service!
Build Up Remodeling and Construction - Michael P.
We hired Paramount Heating & Air Conditioning to replace our entire HVAC system, which was very outdated. Not only was the work done flawlessly, but the whole experience was an absolute pleasure, from start to finish. During the estimate phase, Allan carefully considered the size and nature...
- Wendy R.
I had no heat and no clue who to call. Called one company who put me on hold for about 20 minutes so, did not consider them. I simply picked the Turlington Company, using a Google search. Amazing! Simply Amazing. William came within an hour. Told me that my problem was that I needed 2 AAA...
- Adam M.
Kenneth was very helpful and prompt. The air conditioning going out this time of year is no joke, and Kenneth responded swiftly and patiently. The project ended up being more complicated and expensive than I would have hoped, due to the previous owner's hire, but Kenneth resolved and...
- Sharina T.
I had the best experience with Hecomo Heating & Cooling. My house's AC/heating system stopped working all of the sudden and the temperatures at the time were 90 degrees and up. I was desperate looking into many different companies. Many of them, came over to my house and did estimates at...
Hecomo - Max R.
I just had a high efficiency heating and air conditioner installed and could not be any happier. the price was great and the service was perfect. they were on time and when they left the basement was spotless. Phill and Jim were great to work with. I would use them anytime.
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