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.
Fast, Reliable Air Duct Cleaning Across Duarte
Air duct cleaning in Duarte typically runs $380 – $680 for a full single-family system, and most jobs take between four and six hours. If you live below the 210 Freeway or up in the foothills, your ducts are collecting two very different kinds of contamination, and knowing which one applies to your street changes how often you should clean and what filtration you should run. We’re Hollis Air Duct Pasadena, and we’ve worked in enough Duarte homes to know the difference between freeway soot and Santa Ana ash before we even open a register. Call (626) 469-5477 for a written quote before any work starts.
Why Hollis Air Duct Pasadena Is Duarte’s Preferred Air Duct Cleaning Company
Duarte homeowners call us because the price we quote is the price on the invoice. That simple rule, written into The Garrison Standard, matters more here than most places. Duarte’s housing stock is split between 1950s – 70s ranch homes with original sheet metal ducts and newer foothill subdivisions built within the last two decades. Both need real source removal, not a glorified vacuum pass, and both get it from our Air Duct Cleaning team.
Every technician who pulls up to a home near Royal Oaks Drive or along Huntington Drive is background-checked, uniformed, and works from a written scope. Roy Castellanos runs the crew with one rule: arrive inside the quoted window, price it before touching it, leave the site cleaner than we found it. That’s not marketing language. It’s an operational checklist.
The 365-Day Done Right Promise backs every job in writing. If the cleaning fails within a year, meaning the system re-contaminates due to something we missed, we return and redo the work at no charge. That includes a free second visit, not a pro-rated discount or a rebooking fee. For a Duarte homeowner who has been burned by a low teaser price that doubled at the door, that written promise is the difference between calling us and scrolling past.
Styles & brands we work with
Air Duct Repair in Duarte
Air Duct Repair in Duarte usually means collapsed flex runs, separated joints on original 1960s sheet metal, or return plenums pulling attic air through gaps. We see all three constantly, especially in ranch homes where decades of thermal cycling and a few earthquake seasons have loosened connections that were never sealed properly in the first place. Typical repair work runs $220 – $480 per section or connection, and full duct sealing with mastic runs $900 – $1,600 depending on system size and accessibility.
Collapsed Flex Run Replacement
Older Duarte ranch homes often had flex duct added during remodels, and in attic spaces that hit 130 degrees in summer, that flex sags, kinks, and eventually collapses. We cut out the failed section, install properly supported replacement duct, and seal the connections with mastic, not tape. Tape dries out and fails within a few years. Mastic stays flexible and holds.
Supply Plenum Sealing
When the supply plenum leaks, conditioned air dumps into the attic instead of your living room. We see this most often in foothill Duarte homes where wind-driven pressure changes stress the plenum joints. We clean the surfaces, apply mastic sealant, and verify the seal with a static pressure reading before we pack up.
Ductwork Cleaning in Duarte
Ductwork Cleaning in Duarte means full source removal from both the supply and return sides, not just brushing the visible register openings. We run a negative-air machine to put the system under vacuum, then agitate the duct walls with rotary brush systems or compressed air tools so debris gets pulled to the collection unit rather than blown into the house. A complete system cleaning for a typical Duarte ranch home runs $380 – $560; larger two-story or foothill homes run $500 – $680.
Source Removal Method
The negative-air approach matters because Duarte’s fine dust is finer than what you’d find in coastal cities. Freeway soot and decomposed granite particles under 10 microns settle deep in supply runs and won’t come out with a shop vacuum. Negative air with HEPA filtration captures that particulate at the source and keeps it out of your living space during the job.
Return Duct Deep Cleaning
Return ducts pull unconditioned air from hallways and rooms back to the air handler. In Duarte homes below the 210, returns pick up a gray film of brake dust and tire particulate that recirculates through the system every time the blower cycles. We clean returns separately from supplies to prevent cross-contamination during the job.
Trusted Brands We Service in Duarte
Our crews run professional-grade equipment from Rotobrush for mechanical agitation and Nikro for negative-air collection, with filtration components from Honeywell and Aprilaire available for system upgrades. We’re not using hardware-store gear, and that matters when you’re pulling decades of San Gabriel Valley dust out of 1960s sheet metal. Because we stock common duct sizes and replacement flex locally, most Duarte repairs that need a section replaced are done the same day without waiting on a parts shipment.
Common Air Duct Cleaning Problems We See in Duarte Homes
- Santa Ana ash loading in foothill systems: Homes above Royal Oaks Drive and near the Fish Canyon trailheads collect decomposed granite dust and wildfire ash that can pack a half-inch of silt inside supply ducts in under 18 months. Blower motors strain against the restriction and high-limit switches start tripping.
- Traffic soot below the 210 Freeway: Homes near Huntington Drive and the 210 corridor pull in fine tire and brake particulate that settles deep in return runs. Low-MERV filters let it through, and once it’s settled, a light brushing won’t remove it. This requires full source removal.
- Original 1960s sheet metal with failed seals: Duarte’s ranch-era homes often have ductwork that was never sealed properly. Joints leak conditioned air into attics and crawlspaces, which pulls more dust into the system and shortens the interval between cleanings.
- Dryer ducts on rural lots: Long, multi-elbow dryer runs under ranch-style crawlspaces collect Duarte’s fine dust quickly. What starts as a normal lint pathway becomes a fire load when mixed with the dry particulate that blows through this valley every fall.
Pricing for Air Duct Cleaning in Duarte, CA
A full single-family duct cleaning in Duarte runs $380 – $680 depending on system size, number of returns, and contamination level. Supply-duct-only cleaning runs $250 – $400. Return-duct deep cleaning adds $120 – $220. Duct sealing with mastic runs $900 – $1,600 for a typical ranch home. Video inspection, which we recommend for homes that haven’t been cleaned in five or more years, runs $95 – $150 and shows you exactly what’s inside before we quote the job. The quote is written, free, and does not move once we’re on site. Call (626) 469-5477 for an exact number.
See the difference
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AfterWe Also Serve Cities Near Duarte
Our crews work throughout the San Gabriel Valley, including Duarte itself along with Monrovia, Arcadia, Temple City, and El Monte. If you’re in a neighboring city and dealing with the same Santa Ana dust or freeway particulate, the process is identical: written quote, uniformed technician, 365-day guarantee in writing.
Serving Duarte, CA - Our Local Coverage Area
We’re based in the Duarte 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 Cleaning in Duarte
Foothill homes in Duarte should be cleaned every 2 – 3 years, and homes below the 210 should be cleaned every 3 – 4 years. That’s shorter than the national average because Santa Ana winds inject fine ash and granite dust directly into attic venting and return plenums. If you’re changing a MERV 13 filter every four weeks during fall wind season, your cleaning interval is overdue. Call (626) 469-5477 and we’ll camera-inspect before recommending a schedule.
Yes, and the difference is measurable. Homes within a quarter mile of the 210 show visibly darker duct interiors, with brake dust and tire particulate settling into supply runs. The fix is not more frequent brushing; it’s better filtration at the return and a proper source removal cleaning. We’ll quote both so you know the full cost before any work begins.
Yes, and we do it regularly throughout Duarte. Original sheet metal ducting is actually easier to clean thoroughly than flex duct, provided the joints haven’t separated badly. We inspect each accessible section, seal any obvious leaks with mastic while we’re in there, and camera-inspect the finished result. The cleaning won’t damage 60-year-old metal when done with proper agitation under negative pressure.
Because Santa Ana winds carry decomposed granite dust from the San Gabriel Mountains directly into your attic vents and return plenum. That dust loads the filter within weeks, not months. The real problem is that some of it bypasses the filter entirely when return leaks are present. We seal the returns first, then clean the system. A sealed return plus a clean duct run keeps your filter from turning gray in a month. Call (626) 469-5477 for a free quote.
Newer foothill homes typically have better-sealed systems with flex duct, so they hold up longer between cleanings but still load with mountain dust during wind events. Older ranch homes have leaky sheet metal that pulls attic air continuously, meaning they need sealing work more than they need cleaning. We diagnose which one applies to your system before we quote, because a cleaning alone won’t fix a leaking return. The quote is written and free at (626) 469-5477.
The Duarte Split: Two Contamination Zones, Two Cleaning Strategies
Duarte’s geography splits the city into two distinct contamination profiles, and the cleaning strategy should follow that line. Homes below the 210 Freeway deal with traffic-related particulate: fine soot, brake dust, rubber from tires, all of it under 10 microns and all of it settling into return ducts that pull air from hallways and living spaces near the roadway. Homes in the foothills, particularly those off Royal Oaks Drive and up toward the Fish Canyon area, deal with a different load: decomposed granite dust and occasional wildfire ash blown down from the San Gabriel Mountains during Santa Ana events. That ash is abrasive and electrically charged, which means it clings to duct walls and blower blades in a way traffic soot doesn’t. A foothill home can blind a system in 18 months without a cleaning. A freeway-adjacent home takes longer but the particulate is finer and penetrates deeper into the return side. Both need source removal, but the filtration advice differs. Foothill homes benefit from a heavier filter run at the return, like a MERV 13 from Honeywell or Aprilaire, because the ash load arrives in bursts during wind season. Freeway-adjacent homes do better with a sealed return system and a MERV 11 minimum, because the soot is constant but lower volume. We spell this out on every Duarte quote because the wrong filter in the wrong zone just moves the dust around instead of stopping it.
What We Found on Royal Oaks Drive
In a ranch home off Royal Oaks Drive near the foothills, our crew pulled the registers and found a half-inch of fine gray silt caked inside the supply ducts. That’s ash and decomposed granite from repeated Santa Ana blows, not ordinary household dust. We ran a Rotobrush agitation tool under negative pressure with HEPA filtration, then camera-inspected the air handler. After clearing the blower motor and replacing a collapsed flex run, the homeowner’s MERV 13 filter stopped clogging within two weeks, and static pressure dropped to normal. That’s the difference between cleaning the duct surface and removing what’s actually restricting airflow. We do the second thing.
Key Takeaways for Duarte Homeowners
- Full duct cleaning in Duarte runs $380 – $680 for a single-family home, with written pricing before work starts.
- Foothill homes need cleaning every 2 – 3 years due to Santa Ana ash and granite dust; freeway-adjacent homes can stretch to 3 – 4 years but need sealed returns.
- The 365-Day Done Right Promise covers every cleaning in writing. If something we miss causes re-contamination within a year, we return and fix it at no charge.
- Original 1960s sheet metal ducts are cleanable, but they usually need joint sealing at the same time to stop pulling attic dust.
- Call (626) 469-5477 for a free, written quote. A live person answers around the clock.
Call Hollis Air Duct Pasadena for Duarte Air Duct Cleaning
Whether you’re below the 210 dealing with freeway soot or up against the foothills fighting Santa Ana ash, we’ll give you a written price, a uniformed technician who arrives inside the quoted window, and a 365-day guarantee in writing. That’s The Garrison Standard, and it applies to every Duarte job we do. Call (626) 469-5477 now for a free estimate. You’ll talk to a person, not a voicemail.
Written by Roy Castellanos, Owner at Hollis Air Duct Pasadena, serving Duarte and the San Gabriel Valley. Drafted by the team at Hollis Air Duct Pasadena.