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 San Pedro?
Duct repair and sealing in San Pedro typically runs $250 to $450 for minor sealing jobs and $650 to $2,200 for larger repairs, with most single-family homes landing near $900. A whole-home duct replacement sits well above that, usually starting around $3,000. The exact figure depends on how many seams are leaking, whether the ducts run through a crawlspace or attic, and how accessible the problem areas are.
We give free estimates on every job, so you’ll have a real number before anyone touches your system. Call (877) 573-0759 to book one.
Key Takeaways
- Minor duct sealing in San Pedro: $250 to $450.
- Moderate repair plus sealing on a typical home: $650 to $1,400.
- Extensive repairs or partial rebuilds: $1,400 to $2,200+.
- Most leaky ductwork wastes 20% to 30% of the air your system produces; sealing it usually pays back in a few cooling seasons here.
- Better equipment means less guessed work. We use Rotobrush contact-vacuum brush systems, Nikro machines, and Abatement Technologies HEPA and negative-air gear to contain what gets dislodged.
Duct Repair & Sealing Cost Breakdown (2026)
Here’s what the main line items cost in the San Pedro market this year. These ranges reflect real work, not a low-ball add-on.
| Service | Typical 2026 Range | What’s Included |
|---|---|---|
| Seal individual joints and seams | $250 – $450 | Mastic and foil-tape sealing on accessible seams, register boots, and plenum connections |
| Seal an entire small, accessible system | $450 – $800 | Full seam and joint sealing on a single-story home with easy attic or crawlspace access |
| Patch or replace a damaged duct run | $350 – $700 | Cutting out damaged flexible or rigid duct and fitting a new section |
| Moderate repair plus sealing (typical job) | $650 – $1,400 | Repairs on several runs, sealing throughout, and reconnecting disconnected boots |
| Extensive repairs or partial rebuild | $1,400 – $2,200 | Multiple failed runs, rerouting around obstacles, re-insulating exposed sections |
| Full duct replacement | $3,000 – $7,500+ | Removing old duct and installing new insulated duct throughout, sized to the system |
| Duct cleaning (often bundled) | $300 – $550 | Rotobrush and Nikro cleaning of the full system before repairs are confirmed |
What drives cost up? Access is the biggest one. Ductwork buried under blown insulation in a low attic takes longer to reach and seal than ductwork running along an open crawlspace. The number of separate leak points matters too. A home with a handful of loose seams is a quick job; a system with collapsed runs, disconnected boots, and crushed flex duct near the furnace is not. Old ductwork from the 1970s and 1980s also fails in predictable ways, and that failure often shows up as cold rooms and high summer bills before anyone crawls up to look.
San Pedro’s climate shapes this more than people expect. The marine layer keeps attics damp with condensation much of the year, and that moisture degrades duct insulation and loosens mastic over time. Homes in the older neighborhoods near the harbor also tend to have flexible duct that’s been sitting in that humidity for decades.
What Affects Duct Repair & Sealing Pricing in San Pedro
Every quote comes down to these factors. Knowing them before you call helps you spot a fair number.
- Number of leak points. Each disconnected joint, cracked seam, or loose register boot adds labor. A handful of small leaks is one price; a dozen is another.
- Access and location. Ducts running through a cramped attic or shallow crawlspace take longer to reach than those running through an open basement or along an easy ceiling chase. San Pedro’s hillside homes often have tight attic spaces that add time.
- Duct material and age. Flexible duct is cheaper to repair than older rigid sheet metal. Ductwork from before the 1990s usually needs insulation work along with the repair.
- Whether cleaning is needed first. We won’t seal over debris or mold. If a system hasn’t been cleaned in years, the scan-and-clean step comes before repair, and that adds to the total.
- Type of sealant. Standard mastic and foil tape are included in most quotes. Guardsman-brand protective coatings, applied to protect duct integrity, cost a bit more but hold up better in damp coastal conditions.
- Containment requirements. We use Abatement Technologies negative-air and HEPA equipment during cleaning and repair, which keeps dislodged particles out of your living space. It’s part of how we work, and it’s baked into the estimate rather than added as a surprise line item.
Leaking ducts also affect your energy bill. The less air escapes into the attic, the less your system has to work during a warm San Pedro summer, and the lower your bill runs. It’s worth checking the cost trade-offs before assuming a repair isn’t worth it. You can read more about Duct Repair & Sealing in San Pedro and what a full inspection covers.
How to Save on Duct Repair & Sealing
There’s no magic discount. The savings come from doing things in the right order and spotting problems before they get expensive.
- Get an inspection before you get a quote. A proper look inside the ducts with real equipment tells you if you’re facing $300 or $1,500. We always start with a full assessment so nothing is guessed at.
- Bundle cleaning and repair. If you need cleaning anyway, having the repair done in the same visit keeps down the cost of a second trip and a second setup.
- Handle leaking seams early. Small leaks are cheap to seal. A detached run that’s been pumping air into a damp attic for two years may need a rebuild.
- Ask about flexible duct repair over replacement. When flexible duct can be patched and sealed rather than replaced, you save substantially. Only whole-system failures justify replacement.
- Watch for our free estimates. Every quote we give is free and doesn’t commit you to anything. Call (877) 573-0759 and we’ll come out and look.
FAQs – Duct Repair & Sealing Cost
How much does duct repair cost in San Pedro?
Most duct repair jobs in San Pedro fall between $350 and $1,400, with the average around $900. Patching a single damaged run usually costs $350 to $700, and a full repair-and-seal job on a typical single-family home lands near $1,000. Call (877) 573-0759 for an exact quote, and remember estimates are free.
Is it cheaper to repair or replace ductwork?
Repair is almost always cheaper. Sealing and repairing a whole system typically costs $650 to $2,200, while full replacement starts around $3,000 and can run past $7,500. Replacement only makes sense when the duct is crushed, badly contaminated, or past 20 years old across the board. For most homes, a proper repair and seal is the better call. Call (877) 573-0759 and we’ll tell you honestly which one your system needs.
How much does duct sealing save on energy bills?
Sealing leaky ducts can cut your heating and cooling costs by 10% to 30%, depending on how bad the leaks were. For a San Pedro home spending $200 a month in the warmer months, that’s often $20 to $60 back. The repair typically pays for itself over a couple of seasons. Call (877) 573-0759 to find out how much air you’re losing.
Can duct repair and cleaning be done in the same visit?
Yes, usually. Bundling a full cleaning with repair in one trip saves you a second service call and a second setup. Cleaning with professional-grade equipment before we seal anything means the ducts are spotless when the work is done. We use Rotobrush contact-vacuum brush systems and Nikro machines, the same gear restoration and HVAC contractors rely on. Call (877) 573-0759 to schedule it.
How long does duct repair and sealing take?
A typical single-family job takes three to six hours, depending on access and the number of repairs. Whole-system work can stretch to a full day. Most jobs are finished in a single visit. Call (877) 573-0759 and we’ll give you a realistic time frame when we quote it.
Why a Proper Estimate Beats a Low Bid
We’ve seen plenty of San Pedro homeowners pay twice: once for a cheap sealing job that didn’t hold, and again for the repair that should have been done the first time. What separates a lasting job is the equipment and the process behind it. We bring contractor-grade systems, not a shop vac and a blower. That means Rotobrush contact-vacuum brush systems that dislodge and capture debris in one pass, Nikro machines trusted by HVAC and remediation contractors, and Abatement Technologies HEPA and negative-air equipment that keeps what gets stirred up out of your living room.
We also handle the full span of duct work in one place: air duct cleaning, dryer vent cleaning, and air duct repair. If we find a crushed run or a disconnected boot during cleaning, we can fix it in the same visit rather than sending you to a second company. And when duct sealing calls for a protective coating, Guardsman-brand products are part of our lineup, so duct integrity gets handled alongside the repair. We’re familiar with Honeywell and Aprilaire air-quality systems too, which matters if your home has whole-house filtration or humidity control tied into the ductwork.
For a broader look at how the company works, see our home page.
If you’ve been burned by a low-price service before, ask us what equipment will show up. That’s a fair question, and the answer tells you a lot about what kind of job you’re getting.
Book a Free Duct Repair Quote in San Pedro
You don’t need to guess what your ducts will cost to fix. Call (877) 573-0759 and we’ll come out, inspect the system, and give you a straight number with no pressure and no surprises. Whether it’s a small leak needing a quick seal or a full repair-and-clean job on an older San Pedro home, we’ll tell you what’s actually wrong and what it takes to fix it. Estimates are free, and the work is done with the same professional-grade equipment the restoration pros use.
Pricing reflects the San Pedro market as of 2026. Air Duct Cleaning San Pedro offers free estimates – call (877) 573-0759.
What Our Customers Say
"Ran a negative air machine on the whole system rather than the shop vac on a stick that the cheap outfit down the road uses. Showed me the before and after photos from inside the trunk line and it was genuinely disgusting."
- Vikram Reddy"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."
- Ernesto Morales"Two guys, about three hours, plastic down at every register, and they wiped the vent covers before putting them back."
- Raj Singh