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.
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Before
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Before
AfterAir Duct Cleaning Company in Duarte, CA
Hollis Air Duct Cleaning handles whole-system duct cleaning, dryer vent cleaning, and duct sealing for Duarte homeowners, with crews that understand the foothill dust and wildfire ash that collect in local ductwork. In Duarte, the job is different from lower-elevation valley cities because the San Gabriel Mountains funnel mineral dust, oak and pine pollen, and fire-season particulate directly into attic vents and return-air plenums. We dispatch from our Los Angeles office and serve Duarte with background-checked, uniformed technicians who arrive inside the quoted window, price the job in writing before touching anything, and back every job with our 365-Day Done Right Promise. Call (361) 326-5060 for a free estimate.
Why Duarte Homes Are Different
Duarte sits against the San Gabriel Mountains foothills, and that geography changes what we pull out of local ducts. Santa Ana wind events and dry summer heat drive airborne debris down from the Angeles National Forest canyons, loading outdoor intake vents and attic duct runs with mineral dust and wildfire ash that lower-elevation cities like Baldwin Park simply do not see. After a fire season or a hard wind week, our crews routinely find visible ash and fine grit caked in return-air plenums in the foothill-adjacent neighborhoods.
The housing stock reinforces the problem. Much of Duarte was built between the 1950s and 1970s, and those mid-century ranch homes often still run original or first-replacement galvanized and flex ductwork with accessible attic runs that have trapped decades of foothill dust, pollen, and pest debris. Newer infill near the Gold Line corridor brings tighter construction, but even those systems pull the same mountain-sourced air. The dry climate keeps that dust loose, so every time the AC cycles, it recirculates through the house. That is why a standard urban duct-cleaning approach, designed for lint and dander, often misses what is actually in Duarte ducts.
Our Main Duarte Services
Duarte homeowners call us most often for these three jobs. Each has its own page with full details, pricing, and what to expect on the day of service.
Air Duct Cleaning in Duarte
We clean the full supply and return system, from the main trunk lines to each register, using a Rotobrush rotary brush system for mechanical agitation and, where needed, a Nikro negative-air machine to pull loosened debris out under controlled suction. In Duarte, the priority is removing the compacted foothill dust and ash that settles in attic flex runs and main plenums, not just surface vacuuming. We inspect with a camera before and after so you see the difference. Air Duct Cleaning in Duarte
Dryer Vent Cleaning in Duarte
Dryer vent cleaning in Duarte runs from the appliance connection through the exterior termination, clearing lint buildup that restricts airflow and creates fire risk. Many Duarte ranch homes have long vent runs through attics or crawl spaces where lint combines with foothill dust to form dense blockages. We measure airflow before and after to verify the vent is actually clear, not just brushed. Dryer Vent Cleaning in Duarte
Duct Sealing in Duarte
Duct sealing closes the leaks in your supply and return system using mastic and metal-backed tape at joints, seams, and connections. In Duarte’s older ranch homes with galvanized or flex ductwork, decades of thermal cycling have opened gaps that pull hot attic air into the system and blow conditioned air into unused spaces. We pressure-test the system to find the leaks, seal them by hand, and verify the improvement with a second test. Duct Sealing in Duarte
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Duarte
We stock parts and filters from Honeywell, Aprilaire, and Guardsman for common Duarte systems, and we carry Abatement Technologies filtration upgrades for homeowners dealing with heavy foothill dust or wildfire smoke infiltration. Most filter replacements and component swaps ship to our Los Angeles office within 24 hours, so we do not leave you waiting on parts. See our brands for the full roster.
Pricing for Air Duct Cleaning Company in Duarte, CA
| Service | Typical range in Duarte |
|---|---|
| Whole-home air duct cleaning (single system, up to 12 vents) | $350 – $550 |
| Whole-home air duct cleaning (larger home, 13 – 20 vents) | $500 – $750 |
| Dryer vent cleaning (standard through-wall run) | $120 – $180 |
| Dryer vent cleaning (long attic or crawlspace run) | $180 – $260 |
| Duct sealing (single system, manual mastic method) | $400 – $650 |
| Duct sealing with post-test verification | $550 – $850 |
| AC coil cleaning (included with duct cleaning) | $75 – $125 |
| Register/grille deep cleaning (per unit, add-on) | $15 – $25 |
| UV light installation (germicidal, add-on) | $250 – $400 |
| HEPA filtration upgrade (Honeywell or Aprilaire) | $200 – $450 |
In Duarte, prices move up when we encounter heavily compacted foothill dust requiring extra agitation time, or when attic access is limited in older homes with original duct layouts. We write the price down before any work starts, and that number does not change at the door. No per-vent add-ons, no surprise charges once the technician is inside.
Neighborhoods We Serve in Duarte
We cover all of Duarte, from the foothill neighborhoods against the mountain to the newer developments near the Gold Line. Most appointments are scheduled within a few days, with routing coordinated from our Los Angeles office to keep drive times short and arrival windows reliable.
- Royal Oaks
- Duarte Hills
- Northview
- Fish Canyon foothill area
- Gold Line corridor infill
Service Area – Cities Near Duarte
Our crews regularly work the full San Gabriel Valley foothill corridor. We schedule appointments in Monrovia, CA to the west, Baldwin Park, CA to the south, Arcadia, CA to the southwest, and Azusa, CA to the east. Dispatch is coordinated from our Los Angeles office, so foothill cities share the same technician pool and scheduling system.
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 Company in Duarte
No permit is required for standard residential duct cleaning or dryer vent cleaning in Duarte. Duct sealing that involves modifying or extending the HVAC distribution system may need a permit through the city building division; we handle the paperwork on those jobs and include it in the written price. Call (361) 326-5060 if you are unsure which category your job falls into.
We prioritize Duarte appointments when heavy ash loads are reported, scheduling within a few days rather than weeks. Our Los Angeles office coordinates routing to keep foothill-area calls together, so crews do not lose time crossing the valley. Call (361) 326-5060 to get on the list; estimates are free.
We work in every Duarte neighborhood, including gated and HOA-managed communities. Our technicians are background-checked and uniformed, and we carry proof of insurance that most Duarte HOAs require for vendor entry. We schedule directly with you, not through a property manager, and we leave the site clean per The Garrison Code. Call (361) 326-5060 to confirm your community’s access requirements.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Duarte Customers Say
"Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.