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 Dimas
Air duct cleaning in San Dimas typically runs $350 – $650 for a full residential system and is usually completed in a single visit with before-and-after photo documentation. We’re the Air Duct Cleaning team at Hollis, and we’ve been working in the San Gabriel Valley long enough to know that San Dimas homes present a specific set of challenges you won’t find in newer construction cities. Our crews dispatch from the Los Angeles office and carry Rotobrush rotary systems, Nikro negative-air machines, and camera inspection gear built for the original galvanized and flexible ductwork common in neighborhoods from downtown San Dimas to the foothill tracts near Via Verde. If your vents are pushing dust, your system’s working harder than it should, or you’ve just come through another Santa Ana wind event, call us at (361) 326-5060. We’ll give you a written price before any work starts, and every job carries our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is San Dimas’s Preferred Air Duct Cleaning Company
We’ve built our reputation in San Dimas on showing up inside the quoted window, pricing in writing, and leaving the site clean. That’s The Garrison Standard, and it’s how every Hollis location operates, including ours serving San Dimas.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. The price we write down before any work begins is the price you pay at the door. No estimates that balloon once we’re inside.
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 scheduling.
Our 365-Day Done Right Promise covers every job in writing for a full year. If the work fails, we return and make it right at no charge, including a free second visit. In a trade where many competitors won’t put guarantees on paper, we do.
Vent Cleaning in San Dimas
V Cleaning in San Dimas starts with understanding what your system is actually moving through your home. In this city, that often means decades of accumulated dust in original ductwork, seasonal pollen from the San Gabriel foothills, and fine particulate from Santa Ana wind events that pushes ash and debris deep into supply and return lines.
A typical residential vent cleaning in San Dimas runs $250 – $450 for supply and return registers, or $350 – $650 when bundled with full duct cleaning and camera inspection. We don’t price per vent. One flat price per system, agreed before we touch anything.
Supply vs. Return Vent Cleaning
Supply vents push conditioned air into your rooms. Return vents pull air back to the handler. In San Dimas’s older tract homes, return vents often sit low on walls where they collect more debris, and their larger size means more surface area for buildup. We clean both, but we inspect the returns first because they’re usually worse than homeowners expect.
Register Removal and Deep Cleaning
We remove each register, clean behind the boot where dust cakes against the drywall, and check for disconnected flex duct at the collar. In 1960s and 1970s San Dimas construction, these connections were often taped rather than sealed with mastic, and the tape has long since failed.
Air Duct Repair in San Dimas
Air Duct Repair in San Dimas is often the necessary step before cleaning can do any good. Original flexible duct runs from the 1960s through 1980s have hardened, cracked, or collapsed at joints, and galvanized steel trunks have separated at seams. Cleaning a crushed or disconnected run without fixing it first is a waste of your money.
Repair costs in San Dimas typically range from $200 – $500 for reconnection and sealing of accessible runs, and $800 – $1,800 for replacement of collapsed flexible duct or corroded galvanized sections in attics or crawl spaces. We camera-inspect before quoting so you know exactly what you’re paying for.
Crushed and Disconnected Flex Duct
Original flexible duct in San Dimas tract homes was often strung too tight across attic trusses or compressed under insulation. Over decades, the wire helix fatigues and the run collapses. Our camera finds these spots, and we replace with properly supported new flex or rigid duct where access allows.
Galvanized Trunk Sealing and Mastic Application
Original galvanized steel trunks in San Dimas homes were assembled with snap-lock seams and spot welds, not sealed joints. We brush clean, then seal every seam and joint with duct mastic rated for 25 years, which is why we also offer Duct Sealing in San Dimas as a standalone service. This stops the conditioned air leakage that makes your system run longer and your bills climb higher.
Trusted Brands We Service in San Dimas
We carry professional-grade equipment and filtration products from Rotobrush, Nikro, Aprilaire, and Guardsman on every San Dimas job. Rotobrush rotary brush systems handle the agitation work inside original ductwork without damaging aging materials. Nikro negative-air machines maintain proper containment pressure so debris doesn’t escape into your living space during cleaning. For filtration upgrades, we stock Aprilaire media cleaners and Guardsman HEPA systems sized for the multi-zone HVAC setups common in newer San Dimas foothill homes. We don’t have to order parts and make you wait. Our vans carry the inventory to complete most repairs and upgrades same visit.
Common Air Duct Cleaning Problems We See in San Dimas Homes
- Post-Santa Ana ash infiltration. After the Santa Ana winds, calls spike in older neighborhoods near the foothills where original ductwork acts like a sieve for fine ash and dust that settles deep in the system, coating blower wheels and recontaminating cleaned ducts within weeks if the return side isn’t addressed.
- Collapsed original flexible runs. The 1960s – 80s tract homes throughout central San Dimas used early flexible duct that hardens and collapses at bends and supports, creating dead zones where no air flows and mold can form from condensation.
- Equestrian property dander loads. Homes near the foothills with horses on property or nearby accumulate animal dander and fine trail dust that standard MERV 8 filters cannot capture, leading to rapid recontamination unless the air handler is upgraded to HEPA filtration during cleaning.
- Disconnected joints at wye fittings. Original installations often used friction-fit connections at branch takeoffs without mechanical fastening, and decades of thermal cycling have loosened these joints, dumping conditioned air into attics and crawl spaces before it reaches your rooms.
Pricing for Air Duct Cleaning in San Dimas, CA
Full residential air duct cleaning in San Dimas runs $350 – $650 for a typical single-system home up to about 2,500 square feet. Larger homes, multi-zone systems, or properties with separate guest houses fall in the $700 – $1,200 range. Commercial duct cleaning for small offices, retail, or equestrian facilities starts around $800 and scales with system complexity.
What moves the price: accessibility of attic or crawl space runs, whether camera inspection reveals crushed or disconnected duct requiring repair before cleaning, and whether you add filtration upgrades like Aprilaire or Guardsman HEPA systems. We do not quote per vent. One flat price per system, written down before any work starts, and it does not move at the door.
Every San Dimas estimate is free. Call (361) 326-5060 and we’ll schedule a walkthrough.
We Also Serve Cities Near San Dimas
Our crews work throughout the San Gabriel Valley, including Air Duct Cleaning in San Dimas and neighboring La Verne, Glendora, Covina, and Azusa. Each community has its own housing stock and climate factors, and we adjust our approach accordingly. Same written pricing, same 365-Day Done Right Promise, same live-answer scheduling.
Serving San Dimas, CA - Our Local Coverage Area
We’re based in the San Dimas 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 Dimas
The Santa Ana winds push fine ash and particulate from the Angeles National Forest and dry chaparral directly into outdoor HVAC intakes, and original ductwork in foothill neighborhoods filters poorly. We see a predictable spike in calls each autumn from homeowners who notice dust reappearing within days of surface cleaning. Call (361) 326-5060 for a camera inspection that shows you what’s actually inside your system.
We find hardened flexible duct that has collapsed at supports, galvanized steel trunks with unsealed seams leaking conditioned air into attics, and accumulation of decades of dust, pollen, and sometimes rodent debris. Camera inspection reveals the damage that surface cleaning misses. Repair and sealing typically runs $200 – $500 for accessible reconnection work, or $800 – $1,800 for full replacement of collapsed runs.
Properties with horses or near equestrian facilities accumulate fine trail dust and animal dander that standard MERV 8 filters cannot capture, leading to rapid recontamination after cleaning. We address this by upgrading filtration at the air handler to HEPA-grade Aprilaire or Guardsman systems during the cleaning visit, not as an afterthought. The upgrade adds $150 – $400 to a typical job but prevents the cycle of repeated cleanings.
We camera-locate the damage, remove the failed section, and replace it with properly supported new flexible duct or rigid metal where access allows. Every joint gets mechanical fastening and mastic sealing, not tape. The work is priced in writing before we start, and it’s covered by our 365-Day Done Right Promise. Most repairs in San Dimas attics run $200 – $500.
Every three to five years for typical households, but every one to two years for homes near the foothills, properties with horses, or after major Santa Ana wind events that push ash deep into the system. Homes with original 1960s – 80s ductwork should start with camera inspection and repair, then establish a cleaning interval based on what the first inspection reveals. Call (361) 326-5060 to schedule your initial assessment.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving San Dimas and the San Gabriel Valley since 2004.