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
See the difference
Before
After
Before
After
Before
AfterHow Much Does Duct Repair & Sealing Cost in Hawthorne?
Duct repair and sealing in Hawthorne typically runs $350 to $650 for a single disconnected or leaking joint or a small section of failed ductwork, while larger jobs that involve resealing a whole branch run or replacing significant lengths of flexible duct generally land between $900 and $2,400. These are estimated ranges for the Hawthorne market in 2026, and the written estimate you receive after we look at your system sets the final price. Duct work that sounds like it’s whistling, rooms that never quite get comfortable, and dust that comes back a day after you clean all point to the same handful of causes, and the repair cost tracks how far the leak or damage has spread.
We’re a duct-and-vent specialist, not a generalist HVAC company that offers duct work on the side. That matters for pricing because we test, seal, and repair the full system rather than selling a cleaning and calling the leak fixed. Call (855) 473-3133 for a free estimate. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday.
Duct Repair & Sealing Cost Breakdown (2026)
Here’s how the numbers break down by line item in Hawthorne. Expect real range depending on how accessible the ductwork is and how much of it has failed. These are typical estimates, not quotes.
| Line Item | Typical Estimated Range |
|---|---|
| Diagnostic inspection and leak test (credited toward the same-visit repair) | $0 – $150 when bundled |
| Resealing a single joint or small leak with mastic and mesh | $120 – $250 |
| Reconnecting a disconnected duct run | $200 – $450 |
| Small section repair (under 10 linear feet of flex or rigid duct) | $350 – $650 |
| Branch run replacement (10-30 linear feet) | $650 – $1,400 |
| Full trunk line reseal with low-toxicity sealant | $900 – $1,800 |
| Whole-system reseal (larger homes, multiple branches) | $1,400 – $2,400 |
| Rerouting ductwork around an obstruction or into a new room | $800 – $2,200 |
| Duct repair combined with full air duct cleaning | Add $300 – $600 to the repair |
What pushes a job from the low end toward the high end? Access. Ducts in an attic or crawlspace of an older Hawthorne house, or runs buried behind finished drywall, take longer to reach and take more care to seal without tearing anything up. Contamination is the other big one. If a leak has been pulling dust, attic air, or moisture into the system for a while, sealing the gap isn’t enough; the system needs to be cleaned properly first. That’s why we bring Rotobrush and Nikro extraction equipment rather than assuming a shop vac and a tube of mastic will do it.
The repair-only range is sometimes the whole story, sometimes not. If the leak is minor and localized, resealing stands alone. If the underlying duct has torn, sagged, or come apart at a joint, the fix is structural.
What Affects Duct Repair & Sealing Pricing in Hawthorne
No two Hawthorne systems price the same way, even in houses of similar size on the same street. A few things move the number:
- Duct material and condition. Older rigid metal ductwork seals cleanly with mastic and mesh. Flexible duct that’s torn or kinked usually gets replaced, which costs more but lasts longer. We tell you which one your system needs before we start.
- Location and accessibility. Attic runs and tight crawlspaces slow the work. Ducts directly overhead in an open basement or garage take less time. The Hawthorne housing stock varies widely here, and a 1950s bungalow and a newer build rarely present the same access.
- Number of leaks found. A single disconnected joint is one price. Finding six or eight small leaks along the trunk line is another. Testing the system first gives you an honest count instead of an estimate built on guesses.
- Whether contamination is in play. A leak that’s been drawing unfiltered air into the return side pulls dust, allergens, and sometimes moisture into the ducts. Contamination-sensitive jobs call for equipment like our Abatement Technologies extraction gear, and that’s a real cost factor.
- Whether air-quality upgrades make sense now. Thick filtration or humidity control from Honeywell or Aprilaire can be installed in the same visit while ductwork is open. You don’t have to do it in the same visit, but if you want to, it’s cheaper than a second trip.
- Time since last cleaning. A system that’s never been cleaned takes longer to seal properly. You can’t seal a dirty system and expect the seal to hold. Dust buildup gets addressed first.
Keep in mind that our local climate shapes the problem in a specific way. Hawthorne has mild weather year-round, so many homes run the HVAC system far less than in hotter inland areas. Low runtime can cause small leaks to go unnoticed for longer, letting dust and attic air infiltrate the return side quietly until a room stops heating or cooling the way it used to. What looks like a system failure is often just ductwork that’s been quietly leaking for years.
How to Save on Duct Repair & Sealing
The biggest savings come from catching leaks before they spread and asking for the repair and cleaning in the same visit. Here’s what actually moves the price:
- Get the whole system tested, not just the room that’s struggling. A single-leak repair is cheaper than multiple-leak repairs, but only if you find all the leaks before you start sealing. Testing first means one trip and one written estimate.
- Ask for repair and cleaning together. Combining major duct repair with full air duct cleaning costs less than scheduling them separately, since we’re already set up and in the system.
- Fix leaks before they contaminate the system. A leaky joint that’s pulling attic air in is a future cleaning job. Sealing it now avoids that added cost.
- Consider air-quality upgrades at the same time. If you’ve been meaning to add better filtration or a humidity-control component from Honeywell or Aprilaire, doing it while the ductwork is open avoids a return visit and its labor.
- Check dryer vent at the same time. A clogged dryer vent is a fire risk, and clearing it during a duct service visit is less than a standalone appointment. It’s a documented residential fire hazard, and we treat it that way.
- Get a written estimate before any work begins. Free estimates mean you know the number before we start. Call (855) 473-3133 and we’ll schedule a look.
One more that readers don’t think about: keep up with filter changes. A clogged filter strains the system and can worsen airflow so the ducts behave as if they’re leaking. That’s cheap preventive care that supports the repair.
If you’re comparing providers, insist on seeing what equipment they’ll bring. A shop vac and a spray bottle of sealant is not duct repair. Rotobrush and Nikro systems are professional extraction equipment used in commercial and restoration-grade duct cleaning, and Abatement Technologies gear signals readiness for contamination-sensitive jobs. Guardsman products in the lineup point to post-clean protection and surface treatment. Equipment quality is a fair proxy for whether the job will actually be done completely.
FAQs – Duct Repair & Sealing Cost
How much does it cost to repair and seal ductwork in Hawthorne in 2026?
Expect an estimated $350 to $650 for a single repair or small section, and $900 to $2,400 for a full branch or whole-system reseal, depending on access and how many leaks are found. Minor joint reseals can come in under $250. The written estimate sets the final price, and there’s no charge for the estimate itself. Call (855) 473-3133 for an exact number on your system.
Is it cheaper to repair ductwork or replace the whole system?
Repair and reseal almost always costs less than replacing an entire duct system, and it’s the right call when the ductwork is structurally sound. Most Hawthorne homes with a leak or two and decent ductwork land in the $350 to $1,400 repair range. Replacement only makes sense when the ducts have failed across a large portion of the system, are badly contaminated, or the layout itself is the problem. We’ll tell you which category your system falls into after testing. Call (855) 473-3133 to get that inspection scheduled.
Why does duct sealing cost more in some Hawthorne homes than others?
Access is usually the difference. Attic and crawlspace runs in older Hawthorne houses take longer to reach and reseal than ducts in an open, accessible space, and the labor follows the time. Contamination-sensitive jobs also cost more because they require commercial-grade extraction equipment like our Abatement Technologies units. Two homes of similar size can land at very different prices for reasons that have nothing to do with square footage.
How do I know if I actually need duct repair, or just a cleaning?
A cleaning handles dust and debris; a repair handles leaks, tears, and disconnected runs. If a room won’t heat or cool, if the system whistles, or if dust returns within a day of cleaning, you likely have a leak rather than just buildup. A leak test during inspection tells you which. We run the test first so you’re not paying for cleaning that won’t fix the problem. Call (855) 473-3133 to book the test and get a clear answer.
Can you repair my ducts and clean the system in one visit?
Yes, when scheduling allows. Repair and cleaning in the same visit typically costs less than two separate appointments and avoids the second setup labor. Combining the two also makes sense because you can’t seal a dirty system and expect the seal to hold. If your job is contamination-heavy, we’ll tell you upfront how long it will take and how we plan to sequence it. Call (855) 473-3133 and we’ll get you on the schedule.
What to Expect When You Call
When you call (855) 473-3133, we ask what your system is doing: rooms that don’t heat or cool, whistling, dust returning, cold spots. From there we schedule a look. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. We’re closed Saturday. On the visit, we test for leaks and check the duct system, then give you a written estimate that separates the repair from any cleaning or air-quality work, so you can see exactly what each part costs.
If ductwork has come apart or torn, we reseal or replace it properly with the right materials. If it’s contaminated, we clean with professional extraction equipment. If you want thicker filtration or humidity control, we install Honeywell and Aprilaire components in the same visit. Better air starts with what’s inside your walls, and the goal on every Hawthorne job is the complete system: ducts, vents, and the connections between them. No cheap corner-cutting, no selling a cleaning to fix a leak.
Frequently Asked About Hawthorne Duct Service
If you’re comparing this page to what other local providers quote, you’ve probably noticed most won’t show you a range. We do because the ranges are useful and because we’re confident the estimate will match after we see the system. Our team has been serving Hawthorne since 2014, and our duct cleaning Hawthorne service covers the full system the same way this repair work does. For readers comparing both repair and cleaning, that page is the starting point. And if you’re looking at broader coverage or nearby neighborhood service, see Hawthorne for what we cover locally.
Written by Duct Cleaning Hawthorne, serving Hawthorne since 2014.
Pricing reflects the Hawthorne market as of 2026. Duct Cleaning Hawthorne offers free estimates – call (855) 473-3133.
Contact
Call (855) 473-3133 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. We’ll test your ductwork, give you a written range, and tell you honestly whether you’re looking at a reseal or something heavier. Start with a call.
What Our Customers Say
"They photographed every return and supply before starting and sent me the file afterward. No upsell to a sanitizing treatment I didn't need."
- Steve Brooks"Fair price and thorough work. They ran about an hour and a half past the estimated finish time, so don't schedule anything tight after."
- Sanjay Reddy"Fair price, competent work. The guy wasn't especially chatty and I had to ask twice to get a real explanation of what he'd done. Not a dealbreaker, just noting it."
- Arjun Patel