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 Cleaning Across Sunnyvale
Air duct cleaning in Sunnyvale typically runs $350 – $650 for a full residential system and $800 – $2,400 for commercial jobs, with most homes scheduled within a few days of calling. We dispatch crews from our San Francisco Bay Area office and serve Sunnyvale neighborhoods directly, including the Heritage District, Ponderosa, and Cherry Chase. Our Air Duct Cleaning team knows the local housing stock: mid-century Eichlers and ranch homes with slab-buried galvanized ductwork that demands rotary agitation and camera inspection, not a quick vacuum job. Call (361) 326-5060 for a free written estimate.
Why Hollis Air Duct Cleaning Is Sunnyvale’s Preferred Air Duct Cleaning Company
We’ve been part of the Garrison Partners family since 2004, and our crews have handled enough Sunnyvale slab-on-grade homes to know what the work actually requires. The 365-Day Done Right Promise covers every job in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit.
Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any equipment touches your system. It does not move at the door. Phones are answered by a live person 24 hours a day, 7 days a week.
We serve Air Duct Cleaning in Sunnyvale with the same equipment commercial crews use: Rotobrush rotary brush systems, Nikro negative-air machines, and HEPA filtration from Abatement Technologies and Guardsman. We explain what each tool does and why it matters for your specific ductwork.
Commercial Air Duct Cleaning in Sunnyvale
Commercial Air Duct Cleaning in Sunnyvale covers office parks along Mathilda Avenue, retail spaces near downtown, and light industrial facilities near the Lawrence Expressway corridor. These buildings typically use larger-gauge galvanized trunk lines with flex drops to individual zones, and they accumulate construction dust from the constant renovation cycle in Sunnyvale’s commercial core. A full commercial cleaning runs $800 – $2,400 depending on system size and access.
Office and Retail Systems
Office buildings in Sunnyvale often run VAV boxes with reheat coils that clog with fine dust from nearby construction. We use Nikro negative-air machines to maintain containment during cleaning, protecting occupied spaces from cross-contamination.
Post-Construction and Remodel Cleanup
Sunnyvale’s building boom leaves substantial debris in new and renovated commercial ducts. We perform source removal with rotary agitation followed by video inspection to verify debris clearance before the space reopens.
Air Duct Cleaning Services in Sunnyvale
Air Duct Cleaning Services in Sunnyvale address a specific regional problem: original uninsulated galvanized ductwork buried in slab foundations, common in Eichler and ranch homes from the 1950s through 1970s. These systems develop cracked concrete penetrations that pull in silica dust and soil gas, and their lapped joints leak unless properly sealed after cleaning. Residential full-system cleaning runs $350 – $650.
Slab-Duct Rotary Cleaning and Camera Inspection
We run Rotobrush rotary agitation tools through slab-buried supply and return lines, then verify with video inspection. This catches cracked plenum concrete that vacuum-only crews miss entirely.
Supply and Return Duct Sealing
After source removal, we seal lapped joints with mastic rated for metal ductwork. Without this step, dust re-enters within months. The Garrison Standard requires it on every Sunnyvale job with original galvanized systems.
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.
Trusted Brands We Service in Sunnyvale
Our equipment roster includes Rotobrush rotary brush systems, Nikro negative-air machines, and HEPA filtration from Abatement Technologies and Guardsman. These are the same tools commercial crews use, not hardware-store gear. We stock filtration products from Honeywell, Aprilaire, and Guardsman for fast turnaround on Sunnyvale jobs, and we explain what each component does for your specific system before we start.
Common Air Duct Cleaning Problems We See in Sunnyvale Homes
- Silica dust infiltration through cracked slab ducts. Sunnyvale’s slab-on-grade construction leaves supply and return lines vulnerable to concrete cracking from seismic settling and dry rot. Fine silica dust enters through these gaps and circulates year-round.
- Mold spore baking after winter damp spells. Sunnyvale’s cool, wet winters let mold colonize evaporator coils and air handlers. The first hot September spell bakes those spores into supply ducts, producing the characteristic hot-dust smell our crews hear about from Heritage District homeowners.
- Unsealed lapped joints in original Eichler ductwork. Mid-century galvanized ducts were joined with overlapping seams, not sealed connections. Cleaning without post-removal sealing lets debris re-enter immediately.
- Soil gas and radon pull through return plenum cracks. After the 2018 EPA radon zone map update, cracked concrete around slab-return plenums became a documented concern in Sunnyvale’s older housing stock. Camera inspection identifies these pathways.
Pricing for Air Duct Cleaning in Sunnyvale, CA
A typical residential full-system cleaning in Sunnyvale runs $350 – $650. Commercial systems range from $800 – $2,400 depending on square footage and duct complexity. Slab-buried ductwork with camera inspection and plenum sealing adds $150 – $300 because the protocol requires rotary agitation tools, video verification, and concrete crack repair that raised-foundation homes simply don’t need.
We give one flat price per system, agreed in writing before work starts. No per-vent pricing. No add-ons at the door. You’ll see before-and-after photos of your own ducts. Call (361) 326-5060 for a free written estimate.
We Also Serve Cities Near Sunnyvale
Our crews work throughout the South Bay, including Mountain View, Santa Clara, Cupertino, and Los Altos. Each community has different housing stock and duct configurations, and we adjust our protocol accordingly.
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 in Sunnyvale
Every 3 – 5 years for most Sunnyvale ranch and Eichler homes, but every 2 – 3 years if you have slab-buried ductwork with known concrete cracking or if you’ve done recent remodeling nearby. The silica dust infiltration through slab cracks accelerates contamination beyond what raised-foundation homes experience. Call (361) 326-5060 and we’ll assess your specific system.
Slab-buried ducts require rotary agitation tools, camera inspection, and often plenum sealing to address concrete cracks that pull in soil gas and silica dust. San Jose’s older housing stock includes more raised foundations with accessible crawl spaces, so the protocol is simpler. The extra $150 – $300 covers equipment time and materials that slab construction demands. Call (361) 326-5060 for a written quote on your specific home.
It’s mold spores that colonized your evaporator coil and air handler during winter damp spells, then got baked into the ductwork during the first hot weeks of September. We see this constantly in Heritage District Eichlers with original slab ducts. The fix is coil and air handler cleaning combined with duct source removal, not just masking the odor. Call (361) 326-5060 to schedule inspection.
Yes. We use Nikro negative-air machines with HEPA filtration on every job, maintaining containment at the air handler while Rotobrush rotary tools agitate debris from the duct walls. This meets NADCA source-removal standards and prevents cross-contamination into your living space. Call (361) 326-5060 to confirm protocol details for your home.
They can almost always be cleaned if the metal is structurally intact. The critical step most crews skip is sealing the lapped joints with mastic after source removal. Without sealing, dust re-enters within months. We inspect with cameras first, clean with rotary agitation, seal every joint, and verify with post-cleaning video. Replacement is only necessary if the metal has corroded through or collapsed. Call (361) 326-5060 for camera inspection and written options.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Sunnyvale and the San Francisco Bay Area since 2004.