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
AfterAir Duct Cleaning Company in Sunnyvale, CA
Full-system air duct cleaning in Sunnyvale typically runs $380 – $620 for a standard single-family home, with most jobs completed in one visit. What drives the price here isn’t the size of the house alone; it’s the age and type of ductwork. Sunnyvale’s concentration of mid-century Eichler and ranch homes means original galvanized steel ducts, slab-on-grade construction, and decades of silica infiltration that newer cities simply don’t face. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews handle these conditions regularly. Call (361) 326-5060 for a free estimate.
Why Sunnyvale Homes Are Different
Sunnyvale’s housing stock is dominated by mid-century Eichler and other ranch-style homes built between 1950 and 1975. Many still run on original rigid metal ductwork with lapped joints and no insulation. After decades of seismic settling and dry rot, these systems leak heavily and are often contaminated with construction debris from nearby remodel booms.
The slab-on-grade construction common here creates a problem raised-foundation cities rarely see: ducts buried beneath concrete floors. Fine silica dust infiltrates through cracks in the slab, requiring specialized rotary equipment to extract. In the Heritage District, we’ve found that cracked return-air plenums can draw in radon-laced soil gas, a problem that intensified after the 2018 EPA radon zone map update. On hot September afternoons, that overheated dust smell is the giveaway.
Sunnyvale’s climate adds another layer. Mild, dry summers and cool, wet winters mean HVAC systems run year-round. Low humidity and occasional winter rains create a cycle where mold spores bloom in damp months, then get baked into ductwork during the first hot spells. This means coil and duct cleaning needs differ from more consistently dry or humid regions nearby.
Our Main Sunnyvale Services
Most Sunnyvale homeowners call us for one of three jobs. Each has its own page with full details.
Air Duct Cleaning in Sunnyvale
We clean the full supply and return network using a Rotobrush rotary brush system combined with negative-air extraction from Nikro machines. In Sunnyvale, we pay special attention to slab-duct runs where silica dust accumulates, and we inspect Eichler return plenums for concrete cracking that can pull in soil gas. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in Sunnyvale
Dryer Vent Cleaning in Sunnyvale
Dryer vent cleaning in Sunnyvale addresses the lint buildup that restricts airflow and creates fire risk, especially in older homes where vent runs were routed through walls or under slabs without proper access points. We use rotary brushes and high-velocity air tools to clear the full run, including rooftop terminations common in Eichler neighborhoods. Dryer Vent Cleaning in Sunnyvale
Duct Sealing in Sunnyvale
Duct sealing targets the leaks at joints, seams, and connections that waste conditioned air in Sunnyvale’s aging metal ductwork. We apply mastic sealant and mechanical reinforcement to lapped joints that have loosened over decades, with particular attention to slab-duct penetrations where settling has opened gaps. Duct Sealing in Sunnyvale
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 Sunnyvale
We stock parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman for fast turnaround on replacements and upgrades. See our brands for the full roster.
Pricing for Air Duct Cleaning Company in Sunnyvale, CA
| Service | Typical range in Sunnyvale |
|---|---|
| Standard residential air duct cleaning (single system) | $380 – $620 |
| Deep cleaning with slab-duct rotary extraction | $520 – $780 |
| HVAC coil and blower cleaning | $180 – $290 |
| Dryer vent cleaning (standard run) | $140 – $220 |
| Dryer vent cleaning (extended or rooftop run) | $220 – $340 |
| Duct sealing (mastic, per system) | $450 – $720 |
| Return plenum repair/reinforcement | $280 – $450 |
| Whole-home filtration upgrade | $320 – $580 |
What pushes Sunnyvale prices toward the higher end: slab-duct access difficulty, heavy silica contamination requiring extra extraction time, and radon-mitigation-related plenum repairs. What keeps them lower: straightforward ranch layouts with accessible attics. Either way, the price is written down before any work starts and does not move at the door.
Neighborhoods We Serve in Sunnyvale
We work across Sunnyvale’s full range of housing eras, from original Eichler tracts to newer infill near the Caltrain corridor. Most calls come from these areas:
- Heritage District
- Lakewood Village
- Ponderosa Park
- Sunnyvale West
- Ortega Park area
Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Sunnyvale locally. Most appointments are available within 3 – 5 business days.
Service Area – Cities Near Sunnyvale
Our crews regularly work the full corridor between the bay and the foothills. We also serve Mountain View, CA to the north, Santa Clara, CA to the east, Cupertino, CA to the south, and Los Altos, CA to the west. If you’re unsure whether your address falls in our range, call and we’ll confirm.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
No permit is required for standard cleaning or sealing in Sunnyvale. Only duct replacement or structural modification triggers permit requirements through the city’s Building Division. If our inspection reveals work that needs permitting, we’ll note it in writing and explain the process. Call (361) 326-5060 to schedule an inspection.
We typically schedule within 3 – 5 business days, with dispatch coordinated from our Bay Area office. Emergency calls for blocked dryer vents or failed HVAC airflow get priority when safety is a factor. Call (361) 326-5060 to check current availability.
Yes. We’ve completed jobs in multiple HOA-managed communities and provide the written scope and insurance documentation most associations require. We do not enter common mechanical areas without proper HOA approval, and we’ll coordinate directly with your property manager if needed. Call (361) 326-5060 to discuss your building’s requirements.
Ready for a free estimate? Call Hollis Air Duct Cleaning at (361) 326-5060. We’ll give you a written price before any work starts, and every job is backed by our 365-Day Done Right Promise.
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 Sunnyvale Customers Say
"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."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O.