Whole-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.
Before
After
Before
After
Before
AfterFast, Reliable Air Duct Repair Across Citrus
If your registers are puffing dust every time the AC kicks on, or rooms at the far end of the house never seem to cool, you’re likely looking at failed ductwork. In Citrus, the usual culprit is flex duct that has cooked brittle in attic heat that routinely climbs past 140°F, then split at the joints. That lets post-fire ash and attic dust get pulled straight into your air supply. We repair and replace ductwork across Citrus, CA with written pricing before work starts and a written guarantee on every repair. Call (980) 447-2498 for a straight answer and a free estimate.
Key Takeaways
- Duct repair in Citrus typically runs $350 – $900 for targeted joint sealing and short flex-run replacement; full replacement of main trunk lines runs $1,200 – $4,000 depending on home size and access.
- Homes in Citrus, pressed against the Angeles National Forest fire corridor, collect gray-tinged ash inside plenums and duct runs that flatter San Gabriel Valley neighborhoods simply do not see at the same concentration.
- Brittle 1950s – 70s flex duct in 140°F attics is the single most common failure we find in Citrus ranch homes.
- Every repair carries a written guarantee and a free second visit if the fix doesn’t hold. The price is set in writing before we touch the system.
Why Linden Air Duct Cleaning Is Citrus’s Preferred Air Duct Repair Company
Linden Air Duct Cleaning has been serving homeowners since 2004, and our Air Duct Repair crews know exactly what Citrus ductwork looks like after fire season. It’s gray. It’s fine. And it coats supply plenum interiors in a way techs don’t see in Azusa or Glendora set back from the mountain front. That’s because Citrus sits directly under the Angeles National Forest fire corridor, and when fires like the 2020 Bobcat Fire burned in the hills above the community, fine combustion particulate made its way into thousands of duct systems.
Every technician who arrives at your door in Citrus is background-checked, identity-verified, and photo-badged under the Threshold Standard. Before the visit, you get the tech’s name and photo. At the door, they show a photo ID badge. No mystery subcontractors, no unbranded vans. The techs also drive marked vehicles and wear clean uniforms, so you always know who is walking up your driveway.
We serve the whole Citrus foothill pocket, from homes off Citrus Avenue and Barranca Avenue near the mountain front to the residential streets south toward the 210 and the 10 freeway corridors and the neighborhoods around Gladstone Street, Base Line Road, and Foothill Boulevard. Our crews stock the flex duct, collars, mastic sealant, and plenum materials most commonly needed on Citrus’s mid-century ranch stock, which means most repairs happen in a single visit.
Phones are answered by a live person around the clock. No voicemail loops, no callback queues. When a homeowner calls us from Citrus at 7 a.m. or 11 p.m., a real human picks up and schedules the visit. Marcus Veale leads our team, and the standard he set is simple: name and photo before arrival, photo ID at the door, written price before work, written guarantee on every repair.
Air Duct Replacement in Citrus
Air Duct Replacement in Citrus means removing failed sections of flex or rigid duct and installing new, properly sealed runs sized to your system. It’s the right call when the existing duct has split at multiple joints, baked brittle in the attic, or collected so much post-fire ash and fine particulate that cleaning alone won’t fully restore clean airflow.
In Citrus, full replacement of a main trunk line and branch runs typically runs $1,200 – $4,000 depending on home size, attic access, and how much old material has to be removed. A single short run of replacement flex, including collar, hangers, and mastic seal, usually lands between $350 and $650. We put that price in writing before any work begins, so there are no surprise invoices when the job is done.
What Gets Replaced and Why
A replacement involves more than swapping flex. We remove the failed material, inspect the remaining duct with a camera, seal the plenum connections, and re-support every run so it doesn’t sag or kink. In Citrus attics, ultraviolet exposure isn’t the issue; heat degradation is. That’s why we spec a flex duct rated for high attic temperatures and seal every joint with mastic, not tape, which separates and fails within a season or two in this climate.
Signs You Need Replacement Rather Than Repair
If a camera inspection shows splits in more than roughly a third of your supply runs, replacement of those sections is almost always cheaper over two years than chasing repairs. If rooms on the far side of the house never cool, if registers puff dust that smells faintly of burned material, or if the system runs in 100-degree heat and the attic is the hottest room in the house, you likely have systemic duct failure rather than one bad joint.
Ductwork Repair in Citrus
Ductwork Repair in Citrus addresses isolated failures: a split flex joint, a disconnected collar at the supply plenum, a run crushed by stored boxes, or a return that has pulled loose from the wall cavity. Targeted repair typically costs between $250 and $550 for a single joint or connection when access is reasonable and the surrounding duct is still sound.
The key to repair in Citrus is doing a camera inspection before sealing anything. If one joint has separated, the duct next to it is often about to do the same. We inspect, show you what the camera sees, and then repair only what’s failed while being honest about what’s going to fail within a season or two. Citus homeowners get to decide with their own eyes.
Source Removal, Not Just Sealing
If post-fire ash has already made its way into the supply and return ducts, sealing the joint alone leaves that contamination inside. That’s why our repairs include source removal on the affected run under negative pressure using Rotobrush and Nikro equipment. We pull the contaminants out, then seal the system. Fogging a sanitizer over the top without removing the source is an upsell we don’t push, because in Citrus’s heat, the microbial growth comes right back after the next long AC cycle.
Sealing the Plenum
The plenum is the box where conditioned air leaves the air handler and enters the ductwork. In Citrus foothill homes, the supply plenum is where technicians routinely find gray-tinged ash residue after mountain fire seasons. Sealing the plenum correctly, replacing the collar, and re-attaching the flex with mastic and zip ties rated for heat is the difference between a repair that holds and one that blows open by August.
Trusted Brands We Service in Citrus
Our Citrus crews service and replace ductwork on systems built around all major furnace, air handler, and heat pump brands. For cleaning and source-removal work, we run professional-grade Rotobrush and Nikro negative-pressure extraction equipment, which matters a lot when you’re pulling fine ash and combustion particulate out of duct runs in foothill homes. We also keep Guardsman and Abatement Technologies air-quality products available for homeowners who want filtration upgrades after we’ve repaired the leaks. Because our techs stock common flex sizes, collars, and mastic on the truck, most Citrus repairs happen same visit, not “after we order the part.”
Common Air Duct Repair Problems We See in Citrus Homes
- Split flex joints from attic heat. Citrus attics routinely pass 140°F in summer, and the flex duct installed in the 1960s and 70s was never rated for that kind of sustained exposure. The outer jacket cracks, the inner liner tears, and the joint opens, pulling attic air and dust straight into the supply stream.
- Gray post-fire ash infiltration. Because Citrus sits directly under the Angeles National Forest fire corridor, supply plenum interiors routinely collect ash after significant mountain fire seasons. That ash settles, then gets blown into living spaces every time the fan cycles on.
- Disconnected returns. Mid-century ranch homes in Citrus often have return runs routed through wall cavities and attic spaces. When the connection at the return plenum separates, the system pulls attic air, which in this foothill pocket means 140-degree air, and the AC works harder while rooms stay warm and dusty.
- Fogging upsells that hide failed ducts. Companies in the San Gabriel Valley sometimes sell a $99 “sanitizing fog” as a fix-all for musty smells and dust. Without source removal and joint repair, that fog coats the problem instead of fixing it. The odor returns after the first long heat cycle, and the homeowner is out the money.
Pricing for Air Duct Repair in Citrus, CA
A single duct joint repair or short flex-run replacement in Citrus typically costs $250 – $550. Repair across multiple runs usually lands between $600 and $1,200. Full replacement of main trunk and branch ductwork on a typical 1,500 – 2,200-square-foot Citrus ranch home runs $1,800 – $4,000. Attic access, system size, and how much post-fire ash has to be removed from the plenum all affect the final number. You’ll get a written price before any work begins, every time. We don’t quote a low teaser and inflate it on the driveway. Call (980) 447-2498 for a free estimate and an honest conversation about what your ducts actually need.
We Also Serve Cities Near Citrus
Linden Air Duct Cleaning serves the wider region around Citrus, including Los Angeles, San Diego, San Jose, and San Francisco. Homeowners anywhere in our service area get the same written pricing, background-checked technicians, and written guarantee on every duct repair. If you’re just outside Citrus, call us and we’ll let you know how soon we can get a crew to your neighborhood.
Serving Citrus, CA - Our Local Coverage Area
We’re based in the Citrus area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Repair in Citrus
If a camera inspection shows intact duct with only surface dust and ash, a cleaning under negative pressure is enough. If joints have separated or flex has split, cleaning won’t fix the problem, because the contamination keeps getting pulled in from the attic the moment the system runs again. Repair comes first. Call (980) 447-2498 and we’ll tell you which one you actually need after seeing the duct ourselves.
Citrus sits in the eastern San Gabriel Valley air basin, where the mountains trap moisture, ozone, and fine particulate. Combine that with near-constant AC cycling from June through September and you get repeated condensation cycles inside duct runs. Microbial growth feeds on the fine organic particulate and ash that Citrus ducts collect, especially in flex runs that have small tears letting humid attic air in. Coastal LA homes move more air and collect less fine combustible particulate, so the same growth takes far longer to develop.
No. Fogging without source removal coats microbial growth instead of removing it. Without agitation tools and negative-pressure extraction, the contamination stays in the duct. In Citrus’s long, hot cooling seasons, the problem returns after the next heat cycle. A proper remediation removes the material, then repairs the leak that was feeding it moisture. Pay for source removal; skip the fog.
If the outer jacket is cracked and the inner liner feels brittle, replacement is the honest answer. That material was not built for 140°F attic temperatures and has already lived through fifty-plus Citrus summers. Repairing one joint on a run that will split elsewhere within a year is not money well spent. We’ll show you the camera footage and give you a written price either way.
We don’t guess. We perform a camera inspection and, when needed, an air-quality assessment with professional instruments. Fine post-fire particulate shows up as gray film on plenum walls and inside flex lining. The camera sees it directly, and you see the same footage. If we find it, we’ll quote source removal and repair. If we don’t, we’ll tell you that too.
Call Linden Air Duct Cleaning for Duct Repair in Citrus, CA
We know what failed ductwork looks like in Citrus because we’ve pulled it out of hundreds of foothill ranch homes. Split flex, gray ash, disconnected returns, plenums never sealed properly in the first place. The fix starts with a camera inspection and a written price. Every repair is covered by a written guarantee with a free second visit if the fix fails. You know who is coming to your door before they arrive, and the price before they start. Call (980) 447-2498 for a free estimate. A live person answers.
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving Citrus since 2004.