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 San Gabriel
Air duct cleaning in San Gabriel typically runs $350 – $650 for a full residential system, and most jobs are scheduled within a few days of your call. We dispatch crews from our Los Angeles office to serve San Gabriel directly, so you’re not waiting on a van driving in from Riverside or Orange County. If you’re in the Mission District, near Valley Boulevard, or up by San Gabriel Country Club, we know the area well enough to park the negative-air rig without blocking your driveway or your neighbor’s.
San Gabriel’s housing stock is dominated by mid-century ranch homes and older bungalows, many of which still have original 1950s-60s ductwork that was installed with inadequate insulation and poor sealing. Because the city sits in the San Gabriel Valley’s notorious smog trap, these leaky ducts pull in outdoor pollutants and distribute them indoors, making duct cleaning and sealing a critical health measure here in a way it isn’t in coastal LA. Our Air Duct Cleaning team has worked on enough of these older systems to know where the problems hide before we open the first register.
Call (361) 326-5060 to schedule a free estimate. We’ll give you a written price before any work starts, and that price does not move at the door.
Why Hollis Air Duct Cleaning Is San Gabriel’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our track record predates most of the duct cleaning outfits advertising on San Gabriel door hangers. That longevity matters because we’ve cleaned ducts in the same San Gabriel neighborhoods year after year, and homeowners remember who showed up on time and who didn’t.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. They follow The Garrison Standard: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. No exceptions.
Every job carries our 365-Day Done Right Promise. If the work fails within a year, we come back and make it right at no charge, including a free second visit. That’s written on every invoice, not mentioned verbally and forgotten.
Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule your Air Duct Cleaning in San Gabriel.
Vent Cleaning in San Gabriel
Vent Cleaning in San Gabriel means removing the built-up dust, pollen, and Valley smog particulates that settle in your supply and return registers, then agitating and extracting debris from the duct runs behind them. Most San Gabriel homes need this every three to five years, sooner if you’ve renovated, had a rodent issue, or notice dust reappearing on furniture within days of wiping it down. A typical residential vent cleaning in San Gabriel runs $250 – $450 for a standard system with 8 – 12 vents.
Supply Vent Cleaning
Supply vents push conditioned air into your rooms. In San Gabriel’s older homes, we often find these partially blocked by decades of settled dust, construction debris from long-ago remodels, and even paint overspray from careless previous owners. We remove each register, brush the duct run with a Rotobrush rotary system, and capture everything under negative pressure so nothing blows back into your living space.
Return Vent and Boot Cleaning
Return vents pull air back to your HVAC unit, which makes them the first collection point for airborne debris. In San Gabriel’s 1950s and 1960s ranches, the return boot is often an unsealed sheet-metal box in a closet or hallway, and it’s rarely been cleaned since installation. We disassemble and clean the boot itself, not just the grate you see.
Air Duct Repair in San Gabriel
Air Duct Repair in San Gabriel addresses the cracked seams, disconnected joints, and rusted-through galvanized steel that plague original ductwork in this city’s older housing stock. Because San Gabriel’s dry summer heat bakes uninsulated 1950s galvanized duct runs until joints crack and seams open, the same leaks that pull in Valley smog also let cool attic air and moisture condense inside the duct – so homes in the Mission District can show microbial growth in a duct system that never touched coastal air, something coastal-LA homes with newer, tighter ductwork rarely see. Repair typically runs $400 – $900 depending on accessibility and extent of damage, with full duct replacement reaching $2,000 – $4,500 for a complete system.
Seam and Joint Sealing
We use Duct Sealing in San Gabriel techniques like mastic and mechanical fasteners to close gaps where original duct tape has dried and failed. Mastic is a thick, fiber-reinforced paste that remains flexible for decades, unlike the cloth duct tape installed on most San Gabriel homes in the 1960s. A properly sealed duct system can improve airflow by 20 – 30 percent in these older houses.
Rusted Section Replacement
Galvanized steel ductwork in San Gabriel’s unconditioned attics rusts from the inside out where condensation collects. We cut out rotted sections and splice in new duct with proper transitions and supports, then seal every joint. The goal is a system that doesn’t pull attic air, dust, and rodent droppings into your supply ducts every time the blower cycles.
Trusted Brands We Service in San Gabriel
Our equipment roster includes Rotobrush rotary brush systems for agitation cleaning, Nikro negative-air machines for source removal with HEPA filtration, and filtration products from Honeywell, Aprilaire, and Guardsman. We stock common replacement parts for San Gabriel’s most prevalent HVAC configurations, including the odd-sized return boots and transition fittings found in post-war tract homes. That local parts inventory means we don’t need to order a specialty fitting and reschedule your job for next week. When we find a cracked plenum or failed flex-duct connection during your cleaning, we can often repair it same visit because the van carries the right materials.
Common Air Duct Cleaning Problems We See in San Gabriel Homes
- Original 1950s galvanized ductwork with failed seams. The dry San Gabriel heat expands and contracts metal ducts until joints crack open. We find attic dust and insulation blowing straight into bedrooms through gaps the homeowner never knew existed.
- Asbestos-wrapped octopus gravity furnace ducts in Mission District and Valley Boulevard homes. These systems require asbestos testing before any disturbance. Cleaning without testing can release friable material into your home. We handle the testing protocol and, if positive, coordinate with certified abatement contractors.
- Valley smog particulate accumulation in return ducts. San Gabriel’s temperature inversions trap PM2.5 and PM10 against the mountains, and leaky return systems pull that pollution indoors. Standard fiberglass filters don’t catch it; it settles in ductwork and recirculates.
- Microbial growth from condensation in cracked, uninsulated runs. Cool attic air meets warm duct surfaces at cracked seams, creating moisture that supports growth. A fogging “sanitiser” kills surface organisms but doesn’t fix the condensation source. Sealing and insulating the duct does.
Pricing for Air Duct Cleaning in San Gabriel, CA
A typical full residential duct cleaning in San Gabriel runs $350 – $650 for a system with 8 – 12 vents, using source-removal methods with rotary brush agitation and negative-air extraction. Commercial systems or homes with more than 15 vents range $750 – $1,400. Air duct repair in San Gabriel typically costs $400 – $900 for localized seam sealing and section replacement, with complete system replacement at $2,000 – $4,500.
What moves the price: accessibility of your attic or crawl space, whether we need to cut access panels in finished ceilings, the presence of asbestos requiring testing, and whether we’re cleaning only or cleaning plus repairing leaks. We give one flat price per system, agreed in writing before any work starts. No per-vent add-ons, no equipment charges that appear after we’re in your home. You’ll see before-and-after photos of your own ducts, not stock images from another job.
Estimates are free. Call (361) 326-5060 and we’ll schedule a walk-through at your San Gabriel home.
We Also Serve Cities Near San Gabriel
Our crews work throughout the San Gabriel Valley, including San Gabriel, San Marino, Temple City, Alhambra, and Rosemead. Scheduling is coordinated from our Los Angeles office, with local dispatch to minimize drive time and keep appointment windows reliable.
Serving San Gabriel, CA - Our Local Coverage Area
We’re based in the San Gabriel 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 Gabriel
Yes, but we test the duct wrap for asbestos before touching it. In San Gabriel’s Mission District and near Valley Boulevard, many homes still have original octopus gravity furnaces with asbestos-wrapped ducts, and disturbing friable wrap without testing creates a serious exposure hazard. Once cleared, we clean the system with rotary brush agitation and negative-air extraction, same as any other duct type. Call (361) 326-5060 to schedule an asbestos assessment with your estimate.
No. A sanitiser fog kills surface organisms but does not remove the rust scale, settled Valley smog particulates, or construction debris that cause recurring dust and odor. In San Gabriel’s older galvanized systems, the source of the problem is physical debris and moisture from cracked seams, not just biological growth. Source removal with mechanical agitation and HEPA-filtered extraction is the only method that actually removes the material. We don’t sell fogging upsells because they don’t solve the real problem in these houses.
San Gabriel’s combination of original uninsulated ductwork, dry-heat seam cracking, and Valley smog creates a unique failure mode. Cracked joints pull in attic air and moisture, which condenses on cool duct surfaces and supports microbial growth. Coastal homes with newer, tighter ductwork rarely see this because their ducts don’t leak attic air. The fix is sealing the leaks first, then cleaning, not just treating symptoms.
Signs include dust returning within days of cleaning, uneven temperatures between rooms, high summer cooling bills, and visible gaps at duct connections in your attic or crawl space. We can run a video inspection to show you exactly where your San Gabriel home’s ducts are failing. The camera doesn’t lie, and we’ll show you the footage before recommending repair. Call (361) 326-5060 to add video inspection to your estimate.
For San Gabriel’s particulate load from Valley smog and pollen, we typically recommend MERV 11 – 13 pleated filters, assuming your HVAC blower can handle the static pressure. Higher MERV ratings trap smaller particles but can strain older blowers. We check your system’s specs during the cleaning and recommend the right filter for your equipment, not just the highest number on the shelf. Guardsman and Honeywell both make filters in this range that fit common San Gabriel retrofit configurations.
Ready to get your San Gabriel home’s ducts cleaned right? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate. We’ll show up in the window we promised, price the job before we start, and stand behind our work for a full year with the 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving San Gabriel since 2004.