Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
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Before
After
Before
After
Before
AfterHow Much Does Duct Repair & Sealing Cost in Durham?
Duct repair and sealing in Durham typically runs $350 to $1,500 for most homes, with the widest share of jobs landing between $450 and $850. Small patch-and-seal jobs on accessible flex duct often come in at the low end, while replacing sections of collapsed or disconnected trunk line, sealing a large attic run, or repairing ductwork buried in finished ceilings pushes toward the top. The written estimate sets the final price, and we give that estimate free.
That range reflects the real work: finding the failure, getting to it, and sealing the system so the repair holds. A duct that’s leaking into a crawlspace or attic isn’t fixed by tape alone. It needs the right materials for the duct type, a seal that survives Durham’s humidity swings, and a check that the whole system is balanced once the patch is in.
Key Takeaways
- Most Durham duct repair jobs fall between $350 and $1,500, with $450 to $850 being the common middle.
- Sealing a whole system usually costs less per leak than chasing individual gaps one at a time.
- We use Rotobrush and Nikro commercial equipment, plus Abatement Technologies air scrubbers to contain what comes loose during the work.
- Repair found during a cleaning gets handled in the same visit, not handed off to a second contractor.
- Free estimates, upfront pricing, and fast dispatch from 7am to 7pm, Sunday through Friday.
Duct Repair & Sealing Cost Breakdown (2026)
Here’s how the numbers break out for the Durham market. These are typical ranges, not a quote for your house. Ductwork varies too much from home to home for a flat price, and the estimate you get in person is the one that counts.
| Job | Typical Range |
|---|---|
| Single leak or joint seal (accessible flex or sheet metal) | $120 – $260 |
| Reconnect a disconnected duct run | $180 – $400 |
| Patch or replace a short section of damaged duct | $250 – $600 |
| Seal an entire supply or return system (mastic and mesh) | $450 – $1,100 |
| Replace a collapsed or crushed trunk line section | $600 – $1,500 |
| Repair plus full duct cleaning in one visit | $550 – $1,400 |
| Dryer vent clearing and repair (safety service) | $150 – $350 |
What moves a job up or down the range comes down to access and material. A leak in a basement ceiling that opens with a panel is quick. The same leak buried behind drywall in a finished bonus room takes longer and costs more. Flex duct is faster to replace than rigid sheet metal, but rigid duct holds up better and seals tighter when it’s done right. If the repair turns up during a cleaning visit, you’re often saving the cost of a second trip, which is why we handle both in one stop.
Sealing a whole system usually costs less than people expect relative to chasing leaks piece by piece. Individual seals add up fast, and each one means another visit. A single sealing pass on the supply and return lines catches the small gaps that individually seem cheap but together leak more air than the one big hole you can see.
What Affects Duct Repair & Sealing Pricing in Durham
Durham homes carry a mix of ductwork from different eras, and that variety is the biggest reason two similar-looking houses can get very different estimates. Here’s what actually drives the number on your invoice.
- Where the duct sits. Attic runs in Durham’s summer heat take a beating, and crawlspace ducts sit in damp air. Both are harder to reach and harder to seal durably than duct in a conditioned basement, which adds labor.
- The duct material. Flex duct is quick to cut out and replace. Rigid sheet metal takes more time to fit and seal but tends to last longer. Older homes around Durham sometimes have duct board, which needs different repair methods.
- How many failure points there are. One disconnected joint is a small job. Ten leaking joints scattered across a large system is a sealing project, and it’s priced as one.
- Access. Duct behind an access panel is straightforward. Duct sealed up in a finished ceiling or tight mechanical closet means more time, more care, and sometimes opening and closing a wall.
- Whether cleaning is needed first. You can’t seal over a dirty, contaminated duct and expect it to hold. If the system is loaded with debris, cleaning comes first, and the repair follows in the same visit.
- System size. A small single-story ranch has far less ductwork than a larger two-story home with multiple zones, and sealing scales with the length of the runs.
Durham’s climate plays a role worth naming. The long humid summers keep crawlspaces damp, and damp ductwork is where seals fail first. Duct tape that looks fine in a dry climate peels away here. We seal with materials built for this, and that’s part of why a repair done right holds through the season. If you want the cleaning side handled alongside the repair, our duct cleaning in Durham covers what happens before any seal goes on.
How Much Does Duct Sealing Save on Energy Bills?
Sealing leaking ducts can lower heating and cooling costs because you stop paying to condition air that never reaches your rooms. The exact savings depend on how leaky your system is and how much of it sits in unconditioned space like an attic or crawlspace. A home with obvious gaps and disconnected runs has far more room for improvement than a system that’s already tight.
We won’t quote a percentage or a dollar figure, because that’s a number tied to your house, your equipment and your usage. What we can tell you is that a sealed system delivers what it’s supposed to, and the comfort difference is often what homeowners notice first: rooms that were always too hot or too cold start to even out once the leaks are gone. Air quality starts at the duct, and a system that isn’t leaking into your attic or crawlspace isn’t pulling that air back in, either.
Why We Use Commercial Equipment on Residential Jobs
The gap between a proper duct repair and a cheap one usually comes down to the tools on site. Consumer-grade vacuums and generic tape don’t hold up, and they don’t catch what a repair stirs up. We run the same class of equipment used in hospital and commercial remediation work.
- Rotobrush contact cleaning reaches duct surfaces that a shop vac can’t, so repairs go onto clean duct instead of sealing debris in place.
- Nikro industrial vacuums pull a sustained, high-volume vacuum that keeps the system under negative pressure during the work.
- Abatement Technologies air scrubbers run on every job, capturing displaced contaminants in the work area instead of letting them settle back into the home.
- Honeywell and Aprilaire indoor air quality products let us connect the cleaning and repair work to long-term filtration and humidity control, so the fix lasts.
- Guardsman-grade protective treatment extends the value of a visit beyond the day it happens.
Commercial-grade equipment, residential pricing, is the short version. We found it, we fix it is the other. When a cleaning turns up crushed duct or a run that’s come loose, we repair it on the same visit instead of telling you to call another contractor and start the process over.
Should You Repair Your Ducts or Replace Them?
Repair is usually the right call when the duct is intact but leaking, disconnected, or damaged in a few spots. Replacement makes more sense when the system is collapsed in large sections, made of failing material throughout, or so poorly laid out that patching won’t fix the airflow. A repair that costs $450 on a sound system is almost always the smarter money than a full replacement.
The honest answer comes from looking at the duct. That’s why we inspect before we quote, and why the estimate is free. If repair will hold, we tell you. If the damage is broad enough that replacement is the better path, we’ll say so and explain why, rather than selling a patch that fails next season.
How to Save on Duct Repair & Sealing
There’s no shortcut around doing the work properly, but there are smart ways to keep the bill down without cutting corners.
- Get it seen early. A small leak sealed now stays a small job. Left alone, the leak grows, and the duct around it degrades.
- Combine visits. If your ducts need cleaning, do it alongside the repair. Handling both in one visit beats paying for two separate trips.
- Point us to the problem. If you’ve noticed a specific room that’s always cold or a particular vent that barely blows, tell us. It shortens the hunt and puts our time where it counts.
- Clear the access. Moving stored boxes out of the way of the attic hatch or crawlspace opening means less time spent clearing before we can reach the duct.
- Ask about dryer vent at the same time. A dryer vent isn’t a maintenance item, it’s a fire-prevention item, and clearing it during the same visit saves a trip.
Estimates are free, so there’s no risk in getting a real number instead of guessing. Call (866) 486-6152. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. A call outside dispatch hours is booked into the next opening, Sunday through Friday, 7am to 7pm.
What Happens When You Call
You’ll talk to someone who can ask the right questions and get your job on the schedule. We answer 24/7, and fast dispatch runs from 7am to 7pm, Sunday through Friday. Same-day service is often possible when the schedule allows. When a technician arrives, they inspect the duct, find the failure points, and give you a written estimate before any work starts. Upfront pricing means no surprises when the job is done.
Our technicians have up to 13 years of experience with residential and light-commercial ductwork, and they work with the full range of materials Durham homes have. If you’re a property manager handling several units, we can scope the work across a building and price it per unit. If you’re a homeowner with one failing run in the attic, that’s a straightforward job too.
FAQs – Duct Repair & Sealing Cost
How much does duct repair cost in Durham?
Duct repair in Durham typically ranges from $350 to $1,500, with most jobs between $450 and $850. A single seal or reconnect sits at the low end, while replacing a collapsed trunk section or sealing a full system lands higher. Call (866) 486-6152 for an exact quote, since estimates are free.
Is it cheaper to repair or replace ductwork?
Repair is usually cheaper and the better choice when the duct is sound but leaking or disconnected. Replacement runs more and makes sense only when large sections have failed or the system layout is the real problem. A repair in the $450 to $850 range on a healthy system beats replacement in almost every case. Call (866) 486-6152 to find out which one fits your duct.
How much does duct sealing cost in Durham?
Sealing a full supply or return system in Durham usually runs $450 to $1,100, depending on system size and access. Sealing the whole system at once costs less than sealing leaks one at a time. Call (866) 486-6152 for a free estimate on your home.
Can you come today?
Same-day service is often available, with fast dispatch from 7am to 7pm, Sunday through Friday. We answer the phone 24/7, and a call outside dispatch hours gets booked into the next opening. Call (866) 486-6152 to check availability for your address.
Does duct repair include cleaning?
Not automatically, but combining them in one visit usually costs less than two separate trips. A repair plus full cleaning typically runs $550 to $1,400 in Durham. You can look at the Duct Cleaning Durham page for what the cleaning step involves before any seal goes on. Call (866) 486-6152 to price both together.
Where We Work Across Durham
We handle duct repair and sealing for homes and light-commercial buildings throughout Durham and the surrounding area. Whether you’re near downtown, out in the neighborhoods around Duke, or in the newer subdivisions on the edges of the county, the work and the materials are the same. Durham homes range from older properties with rigid metal duct to newer builds with flex runs, and our technicians adjust the repair method to match what’s actually in the system.
If you’re not sure whether your street is in our area, call and ask. If you want the broader picture of everything we offer, the Durham page lays out the full set of services for this market, and it’s a good place to start before you book.
Get a Free Duct Repair Estimate in Durham
Duct repair and sealing in Durham runs $350 to $1,500 for most homes, and the only way to know exactly where your job falls is to have it looked at. Estimates are free, pricing is upfront, and we give it to you in writing before any work starts. Our technicians have up to 13 years of experience, we run commercial-caliber equipment on every visit, and we fix repair problems in the same stop instead of sending you to a second contractor.
Call (866) 486-6152 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Pricing reflects the Durham market as of 2026. Duct Cleaning Durham offers free estimates – call (866) 486-6152.
Written by the team at Duct Cleaning Durham.
What Our Customers Say
"Three other companies in Durham either didn't pick up or wanted to schedule me for the following week. These guys had someone out the next morning."
- Devon Dawson"Asked a lot of questions before he came out, which I thought was a good sign. Turned out he was right about what the problem probably was, so it was a quick fix once he got here."
- Travis Gallagher"My wife's allergies had been bad in this house since we moved in. It's been two months since they did the ducts and it's noticeably better. Not a miracle, but real."
- Ruben Salazar