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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AfterFast, Reliable Air Duct Cleaning Across San Marino
Air duct cleaning in San Marino typically runs $350 – $750 for a full residential system, with most jobs completed in a single visit. We’re the local crew that understands what your home actually needs. Our Air Duct Cleaning team dispatches from our Los Angeles office and serves San Marino properties directly, whether you’re in a 1920s estate off Huntington Drive, a mid-century ranch near Lacy Park, or a condo association along Lorain Road. Call (361) 326-5060 for a free written estimate.
San Marino’s housing stock isn’t like the rest of the San Gabriel Valley. Most homes here were built between 1920 and 1970, many by name architects, with original plaster walls, hardwood floors, and ductwork that predates modern standards. That means our technicians show up prepared for gravity ducts, unlined attic runs, and materials that require a lighter hand than the aggressive rotary brushing you’ll get from a coupon crew. We’ve cleaned systems on Virginia Road, worked stacked HVAC closets near the Huntington Library grounds, and navigated the tight crawl spaces under raised foundations throughout the city. We know the difference between a routine cleaning and a preservation job.
Why Hollis Air Duct Cleaning Is San Marino’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our San Marino customers return because we treat their homes like the specific, often historic, structures they are. Roy Castellanos leads our operation with a simple standard: arrive inside the quoted window, price it in writing before touching anything, and leave the site clean.
Our technicians are background-checked and uniformed. You know who’s walking in before they arrive. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for a scheduling question.
Every job carries our 365-Day Done Right Promise in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. The price we write down before work starts is the price you pay. It does not move at the door.
We coordinate regularly with San Marino HOA management companies, architectural review boards, and property managers who need documentation that work was completed without altering original systems. That familiarity saves time and prevents the access headaches that stall jobs in other cities.
Vent Cleaning in San Marino
Vent Cleaning in San Marino means more than vacuuming registers. In this city, it often means extracting decades of compacted debris from original ductwork that was never designed for modern airflow, plus the wildfire ash and pollen that Santa Ana winds push through outdoor intakes year after year. A typical residential vent cleaning here runs $180 – $340 per system, depending on how many supply and return branches serve the home and whether we need HEPA-contained negative-air equipment to protect finished interiors.
Supply vs. Return Vent Work
Supply vents push conditioned air into your rooms. Return vents pull it back. In San Marino’s older homes, returns are often oversized and unlined, making them prime collection points for ash, rodent debris, and degraded fibrous material. We inspect both with a camera before agitating anything, so we know what’s loose and what’s structural.
Condo and Stacked Vent Systems
Many San Marino condo buildings have stacked or interleaved duct runs shared between units. Cleaning one vent line without isolating the others can push debris into a neighbor’s supply. We seal and isolate each branch before starting, and we coordinate with your HOA or property manager so the whole stack gets addressed, not just the visible half.
Air Duct Repair in San Marino
Air Duct Repair in San Marino frequently involves preserving original systems rather than replacing them. The city’s Architectural Review process and preservation-minded homeowners expect ductwork to be cleaned, sealed, and reused where possible, a standard that practically never applies in neighboring San Gabriel Valley cities. Typical repair work here runs $250 – $600 for sealing and patching original runs, or $800 – $1,500 when we need to rebuild crushed or disconnected sections while maintaining the original routing through plaster walls and unlined attics.
Sealing and Mastic Work
Original gravity and early forced-air ducts in San Marino often leak at joints and seams. We use duct sealing mastic, a thick, flexible compound that bridges gaps without the toxicity of old tape adhesives. For historic systems, this preserves airflow and prevents the suction of attic dust into living spaces without altering the duct’s original construction.
Crushed and Disconnected Runs
Decades of remodels in San Marino’s large attics and raised foundations have left many ducts crushed by storage items or disconnected by prior contractors who didn’t understand the original layout. Our camera inspection finds these breaks before we start cleaning, so we can repair them rather than blow debris through the gap into your walls or a neighbor’s unit.
Trusted Brands We Service in San Marino
We carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration products from Honeywell, Aprilaire, and Guardsman. For San Marino customers, this means we stock the HEPA filters, sealing mastics, and agitation tools that match your specific system rather than ordering parts and making you wait. A Rotobrush rotary system handles the gentle agitation that original 1920s ductwork demands. Nikro negative-air machines maintain containment when we’re working in finished rooms with plaster walls that can’t be opened. When we recommend a filtration upgrade, we size it to your actual airflow, not a generic square-footage chart.
Common Air Duct Cleaning Problems We See in San Marino Homes
- Original 1920s gravity ducts lined with degraded fibrous material. Generic crews often mistake this lining for ordinary dust and attack it with aggressive brushes, dislodging fibers that end up in your supply air or a neighboring unit. We identify the material with a camera first and select tools that clean without destroying.
- Wildfire ash accumulation from Santa Ana wind events. The 2020 Bobcat Fire layered fine ash into outdoor intakes and unlined attic ducts throughout San Marino. Standard residential vacuums can’t remove it. We use HEPA-contained negative-air systems with proper filtration to extract it without redistributing it through your home.
- Stacked HVAC closets with shared returns in condo buildings. If your HOA management company isn’t included in access coordination, the crew cleans only your unit while the shared return stays loaded with debris. We require written access agreements for shared systems before we start.
- Dryer vents routed through common roof chases, shared attics, or party walls. These pathways collect lint for years because no single owner claims responsibility, creating a fire risk the association technically owns. We document the condition and provide the written report your HOA needs to authorize cleaning.
Pricing for Air Duct Cleaning in San Marino, CA
A typical full residential duct cleaning in San Marino runs $350 – $750. Condos and smaller systems with limited access often fall at the lower end. Large estates with extensive original ductwork, multiple HVAC zones, or the need for HEPA-contained negative-air equipment due to degraded lining or wildfire ash run toward the higher end. Commercial and HOA common-area cleaning is priced per system after inspection.
We do not quote per-vent teaser prices that balloon once the technician is inside. We give one flat price per system, agreed in writing before work starts. What affects your price: the number of supply and return branches, whether the ductwork is original and requires preservation-grade handling, the presence of rodent debris or fire ash that demands contained extraction, and whether shared or stacked systems require coordination with neighbors or HOA management.
Call (361) 326-5060 for a free written estimate. We’ll inspect your system with a camera, explain what we found, and give you a price that doesn’t move.
We Also Serve Cities Near San Marino
Our crews work throughout the San Gabriel Valley, including San Marino and neighboring San Gabriel, Alhambra, Pasadena, and South Pasadena. Dispatch and scheduling are coordinated from our Los Angeles office, with local technicians serving each community. If you manage properties in multiple cities, we can schedule coordinated inspections across your portfolio.
Serving San Marino, CA - Our Local Coverage Area
We’re based in the San Marino 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 San Marino
The association typically owns and must maintain dryer vents that pass through roof chases, shared attics, or party walls, even though individual owners use them. We provide a written condition report with photo documentation that your board or property manager can use to authorize cleaning and allocate reserve funds. Call (361) 326-5060 if you need an inspection for your HOA.
Yes, but only if we can isolate each branch and coordinate access to the full stack. We seal supply and return lines at each junction before agitating anything, and we require written access agreements for shared systems. Cleaning one unit without isolating the others pushes debris into neighboring supplies. We won’t start a partial job.
Not when it’s done correctly. The city’s Architectural Review process expects original ducts to be preserved, and our technicians are trained to identify degraded fibrous lining, unlined attic runs, and gravity-system construction before selecting tools. We use gentle rotary agitation or contained negative-air methods rather than aggressive brushing that can destroy historic material. Camera inspection comes first.
They matter. San Marino’s dry climate and Santa Ana wind patterns push dust, pollen, and wildfire ash directly into outdoor air intakes. The 2020 Bobcat Fire layered fine ash into ductwork throughout the city that standard vacuums couldn’t remove. We see it on camera inspections on homes near Huntington Drive and throughout the hills. HEPA-contained extraction is often necessary.
HOAs and property managers need before-and-after photos, a written scope of work, confirmation that original systems were preserved per Architectural Review standards, and proof that shared or stacked systems were fully addressed rather than partially cleaned. We provide all of this as standard on every San Marino job. Call (361) 326-5060 to discuss documentation requirements for your building.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving San Marino and the San Gabriel Valley since 2004.