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
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After
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Before
AfterHow Much Does Duct Repair & Sealing Cost in Carmel Valley?
Duct repair and sealing in Carmel Valley typically runs $350 to $1,200 for most homes, with a single leak repair starting around $180 and a full-house sealing job with mastic and mesh landing near $1,400. Homes here with larger or older systems, or long attic runs exposed to coastal fog, tend to land in the middle of that range. You’ll see the number in writing before we start, so there’s no surprise on the invoice.
Call (855) 338-0352 for a free estimate. We’ll walk your ducts, measure the leaks, and give you a flat number the same visit.
Why Duct Leaks Show Up Fast in Carmel Valley Homes
Carmel Valley sits close enough to the ocean that cool, damp air pushes into attics and crawlspaces most nights, then dries out in the afternoon sun. That wet-dry cycle works on duct tape, mastic, and flex duct joints the same way it works on a fence: it loosens, cracks, and pulls apart over a few seasons. The result is a system that leaks 20% to 30% of the air you’ve paid to condition, especially on longer runs through unheated attic space.
We see it most in homes built in the 1990s and 2000s, where the original foil tape is now brittle and the flex duct has sagged. Pelican Bay, Del Mar Heights, and Rancho Santa Fe homes with long horizontal attic runs are common repair calls for us. The fix is rarely dramatic. It’s a matter of sealing the joints and connections that have given up, then confirming the system holds pressure with a duct blaster test.
Duct Repair & Sealing Cost Breakdown (2026)
Here’s what the work looks like line by line, priced for the Carmel Valley market in 2026. These are real ranges for the work, not teaser numbers.
| Service | Typical Price Range | What It Covers |
|---|---|---|
| Single leak repair (one joint or run) | $180 – $340 | Locate, seal, and pressure-check one isolated failure |
| Section replacement (flex or rigid) | $300 – $650 | Replace a damaged run, reconnect, and seal |
| Mastic + mesh sealing (whole system) | $850 – $1,400 | Seal every accessible joint, boot, and connection |
| Aeroseal-style interior sealing | $1,400 – $2,300 | Seal from inside the ducts, no attic crawl needed |
| Duct cleaning before repair | $350 – $650 | Remove debris so new seals hold; Rotobrush/Nikro |
| Rerouting a crushed or kinked run | $400 – $900 | New path around obstructions, reconnect to trunk |
| Duct blaster test (pre/post leak measurement) | $150 – $300 | Measured leak percentage before and after work |
| Insulation wrap on bare runs | $200 – $500 | Seal and insulate exposed attic ductwork |
What pushes a job toward the higher end? Access. A crawlspace with a 24-inch clearance takes longer than a walkable attic, and a system with 20 joints to seal takes longer than one with 8. Older homes in Carmel Valley with rigid metal ducts sometimes need more labor because the joints are harder to reach and the old sealant has to be cleaned off first. Homes with newer flex systems are generally faster to seal and less expensive.
The number that matters on a repair like this isn’t what we charge. It’s what leaking ducts cost you every month until they’re fixed. A duct system leaking 25% on a $180 monthly heating bill means $45 of that heating is going into your attic. Sealing pays for itself in most homes within two years, often one.
What Affects Duct Repair & Sealing Pricing in Carmel Valley
Six things move the number up or down on a typical job here:
- Access to the ductwork. A walkable attic in a Del Mar Heights ranch home is faster to service than a cramped crawlspace with 18-inch clearance. Access alone can swing a quote by $200 to $400.
- Number of leaks and joints. Sealing one leak is a $200 job. Sealing twelve is closer to $1,000. The duct blaster test tells us which number we’re dealing with before we quote.
- Material: flex vs. rigid. Rigid metal ducts last longer but take more time to seal properly at every joint. Flex duct is faster to seal but more prone to sagging and kinks, which are their own repair.
- System age and condition. A 30-year-old system will often have several problems at once: failed tape, sagging runs, and a crushed section behind the air handler. Each adds time to the job.
- Coastal climate and attic conditions. The damp-dry cycle near the ocean breaks down old tape and mastic faster than in dry inland areas. We replace more failed foil tape here than most inland shops do.
- Whether cleaning is needed first. If the ducts are full of debris or rodent droppings, we clean before we seal. A seal over debris fails. Our Rotobrush and Nikro systems handle the clean, and we come back and seal afterward. Clean it. Repair it. Done.
We don’t leave a job half-finished. If we find damaged ductwork during a cleaning, we can repair it while we’re there instead of sending you to another company. That’s the difference between a technician who cleans and a company that finds the problem and fixes it.
How Duct Sealing Works (and Why We Don’t Hand You a Roll of Tape)
Every sealing job starts with a duct blaster test: we pressurize the system, measure the leak rate, and find the weak points. Then we seal with mastic, mesh, or Aeroseal depending on how the leaks are spread. The seal has to hold against pressure, humidity, and temperature changes for years, and cheap foil tape does not do that. It peels off in 3 to 5 years, especially in a coastal attic.
After sealing, we run the duct blaster again to confirm the leak percentage dropped. If it didn’t, we didn’t do the job right. That second test is what separates a real seal from a temporary patch.
If you have a whole-home filtration unit, we’ll work around it. We’re trained on Honeywell and Aprilaire systems, and we know how to seal a return-side connection without disturbing the filtration housing. That compatibility matters more as more Carmel Valley homes add high-efficiency filtration.
For a deeper dive on the repair process itself, see our Duct Repair & Sealing in Carmel Valley page, where we walk through what a repair visit looks like from start to finish.
Should You Repair or Replace Your Duct System?
Repair is almost always the right call if the ductwork is under 20 years old, the leak count is low, and the material is sound. Replacement makes more sense when the system is on its last legs: multiple crushed sections, failing insulation everywhere, or ducts that were never sized correctly to begin with. A duct blaster test tells you which situation you’re in. Without that test, anyone quoting you replacement is guessing.
For most Carmel Valley homes we see, repair and sealing lands at 15% to 30% of what a full replacement would cost, and it fixes the leaks that drive the bills. We’ll always tell you if replacement is the honest answer. We won’t sell you a full system when a $900 sealing job solves the problem.
How to Save on Duct Repair & Sealing in Carmel Valley
Practical ways to keep the number down without cutting corners:
- Get the duct blaster test first. A $150 to $300 test tells you exactly what’s leaking and prevents an over-quoted job. We include it in every repair estimate.
- Combine cleaning and repair in one visit. If your ducts need cleaning anyway, do both at once. We charge one trip instead of two, and the seal holds better on clean ducts.
- Seal before you insulate. Sealing first, then wrapping the runs, gets you a bigger efficiency gain than insulation alone. Sealing is the highest-return dollar in the whole job.
- Fix small leaks early. A $180 joint repair now beats a $900 section replacement in 3 years. Small leaks grow.
- Ask about your filtration setup. If you have a Honeywell or Aprilaire system, mention it up front. It changes how we approach the return-side sealing, and knowing saves time on the visit.
- Book a free estimate. We’ll walk your system, measure the leaks, and quote a flat number. Call (855) 338-0352.
One more way to save: don’t skip the duct cleaning before sealing. Sealing over debris or rodent damage fails within a season. We clean with commercial-grade equipment first, so the seal holds. It looks like an added cost up front and turns out to be the cheaper path.
Where Duct Repair & Sealing Fits With Air Duct Cleaning
Most Carmel Valley homes that need repair also need cleaning, and the two services run well together. Cleaning removes the debris, dander, and dust that build up over years. Sealing closes the gaps that let new dust and attic air back in. Doing both in one visit means one trip and a system that’s clean and sealed. If you haven’t had your ducts cleaned in over 5 years, that’s the clearest sign to combine the two.
If you’re in a property where you suspect the system has drawn in outdoor air, pest debris, or smoke residue, our home page has the full picture of what we handle, including Abatement Technologies filtration equipment for elevated air quality situations. Those jobs get a different level of care, and we price them by scope after an inspection.
FAQs – Duct Repair & Sealing Cost in Carmel Valley
How much does duct repair cost in Carmel Valley?
Duct repair in Carmel Valley typically runs $180 to $650 for a single leak or failed section, and $850 to $1,400 for whole-system mastic and mesh sealing. Larger systems, crawlspace access, and older rigid metal ducts push the number higher. Call (855) 338-0352 for a free, flat-rate quote on your actual system.
Is duct sealing worth the money in Carmel Valley?
Yes, in most homes. A duct system leaking 20% to 30% wastes that much of your heating and cooling dollar every month. Sealing typically pays back in 1 to 2 years in this market, and the attic conditions here make leaks worse over time. Call us for a duct blaster test to see what your system is losing before you commit to a repair.
How long does duct repair and sealing take?
Most duct repair jobs in Carmel Valley finish in 3 to 6 hours, or a full day if we’re sealing the entire system and rerouting a run. Cleaning and sealing together usually runs one long day. We’ll tell you the expected time when we quote the job, so you can plan around it.
Will sealing my ducts fix high energy bills in Carmel Valley?
Often, yes, if your ducts are leaking and you’ve already ruled out equipment problems. Leaking ducts are one of the top causes of high heating and cooling bills in this climate, and a duct blaster test confirms whether that’s your problem. If the test shows significant leakage, a sealing job is a real, measurable fix. Call (855) 338-0352 for a free estimate.
Do you clean the ducts before sealing, or after?
We clean first, then seal. Sealing over dust, debris, or rodent damage causes the seal to fail within a season. We clean with commercial-grade Rotobrush and Nikro systems, then seal with mastic, mesh, or Aeroseal. Clean, repair, done. Call for a free estimate and we’ll walk your system to see which approach fits.
Book a Free Duct Repair & Sealing Estimate in Carmel Valley
If you’re hearing whistling at the vents, seeing dusty rooms after you’ve cleaned, or paying for heat that never reaches the far side of the house, a duct leak is the usual culprit. We’ll walk your system, run the duct blaster, and give you a flat number before we touch anything. If it’s a cleaning job, we clean. If it’s a repair job, we repair it in the same visit. Professional-grade equipment, and a company that finds the problem and fixes it.
Call (855) 338-0352 for a free estimate. We answer the phone, we quote in writing, and we don’t leave the job half-finished. Clean it. Repair it. Done.
Pricing reflects the Carmel Valley market as of 2026. Maple Air Duct offers free estimates – call (855) 338-0352.
What Our Customers Say
"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."
- Andres Reyes"Found a disconnected run in the crawlspace while they were in there and told me about it rather than cleaning around it."
- Mark Quinn"They photographed every return and supply before starting and sent me the file afterward. No upsell to a sanitizing treatment I didn't need."
- Ruben Rodriguez