Frequently Asked Questions - Air Duct Cleaning
Straight answers about air duct cleaning in Los Angeles, from cost to process to what actually happens during a job. These are the questions homeowners call us with most, answered the way we'd explain them over the phone.
Pricing & Cost FAQs
Air duct cleaning in Los Angeles typically runs $350 to $750 for a whole-home system, depending on square footage, number of vents, and how long it's been since the last cleaning. Homes under 1,500 square feet usually land on the lower end. Larger homes with multiple HVAC units or heavy buildup from pets, renovation dust, or wildfire smoke settle higher. We give you a written flat price per system before any work starts, so the number you approve is the number you pay. No per-vent pricing games, no surprise add-ons at the door. Call (361) 326-5060 for a free estimate based on your exact home.
Cheap quotes usually mean a quick blow-and-go job that skips the containment setup, the access cuts in the plenum, and the time needed to actually agitate dust out of the duct walls. Some companies quote a low per-vent price, then stack fees once they're in your driveway. Others skip HEPA filtration entirely. A legit whole-system cleaning in Los Angeles takes hours, not twenty minutes. If a quote is half the market rate, ask what equipment they're using and whether the price is locked in writing before they start. We quote a flat system price, in writing, and that's what the job costs.
We charge one flat price per system, agreed in writing before any work starts. Per-vent pricing is how homeowners get surprised. A company quotes $39 per vent, climbs into the attic, and suddenly there are forty vents you didn't know you had. Flat per-system pricing means you know the total before we arrive. It covers every accessible vent, return, trunk line, and the air handler if it's reachable. Call (361) 326-5060 and we'll walk through what your home needs and put the number in writing.
Our flat system price covers all accessible supply and return vents, the main trunk lines, branch runs, and the plenum. We use negative-air containment equipment so the dust we dislodge leaves your home through our HEPA filtration unit, not into your living room. The price also includes inspection of the system while we work, removal of the debris we extract, and a final walkthrough. You get a written price before the job, a full year of coverage on the work under The Garrison Standard, and before-and-after photos so you can see what came out. No hidden fees.
For most Los Angeles homes, yes, especially if you haven't had it done in five years or more. Ducts collect dust, pet dander, construction debris, and in Southern California, a fine layer of particulate from wildfire season and freeway proximity. That gunk recirculates every time your HVAC runs. Cleaning doesn't make your air sterile, but it removes the accumulated load that builds up season after season. It also helps your system push air more freely, which some homeowners notice immediately in rooms that never cooled evenly. The value depends on your home's condition, which is why we inspect before we quote.
Service & Process FAQs
Most homes take three to five hours from setup to final walkthrough. That gives us time to lay down protection, cut proper access points in the plenum if needed, agitate the duct interior with rotating brush systems, and run negative-air extraction so dust doesn't escape into your rooms. Smaller condos and apartments can finish sooner. Older homes with decades of buildup or multiple HVAC units can run longer. We'd rather take the time to do it by the book than rush through a system and leave half the dust in the trunk line. You'll know the timeframe when we schedule.
We connect a HEPA-filtered negative-air unit to your duct system, which puts the system under vacuum while we work. Then we agitate each run with rotating brushes and compressed air tools, loosening debris from the duct walls so the vacuum pulls it out. Access is made through the vent openings and sealed access points cut into the plenum, which we cap and reseal. The debris is collected in our filtration unit outside or in containment, never blown through your home. Before we finish, we inspect the system, show you the collected material, and clean up the work area completely.
You need to be there when the local team arrives to let us in and walk through the job, but you don't have to hover. Most homeowners in Los Angeles work from another room while we're in the attic or crawlspace. We'll need access to the HVAC unit, the return vents, and the attic or basement entry. If you leave mid-job, we'll coordinate a time for the final walkthrough so you can see what was removed and ask any questions. The whole point of our process is that you know exactly what was done before you sign off.
No. Negative-air containment is the reason we can promise a clean work site. The system runs under constant vacuum while we clean, so dust gets pulled toward our filtration unit instead of drifting into your living space. We also lay floor protection at entry points and around the HVAC access areas. Before we leave, the work area is cleaned and squared away, per The Garrison Code. You should not need to dust your furniture after we leave. If you do, we didn't do the job right, and that's covered by our year-long workmanship guarantee.
Most Los Angeles homes do well with a professional cleaning every three to five years. Homes with shedding pets, allergy sufferers, recent renovations, or close freeway proximity may need it closer to every two to three years. If you run your AC heavily through summer, which most Angelenos do, you're moving air through those ducts constantly. A good rule of thumb: pull a vent cover off and look inside. If you see matted dust, pet hair, or a gray coating on the metal, it's time. Call (361) 326-5060 and we'll help you figure out where your system stands.
Yes, when proper tools and technique are used. Flexible duct runs need gentler agitation than rigid metal, and we match the method to the material. The rotating brush systems we run are designed for duct interiors, not the aggressive scrubbing that can tear liner or puncture flex. That's also why we avoid the cheapest equipment on the market, which often does more harm than good. We inspect as we go, and if we find ducts that are already compromised, we'll show you and discuss options before touching them. Duct work is built to last decades. A proper cleaning shouldn't shorten that.
Brands & Parts FAQs
We run HEPA-filtered negative-air machines paired with rotating brush agitation systems, the same approach used in commercial and hospital-grade duct cleaning. Our vacuum and filtration equipment includes units from Nikro, a name in professional duct cleaning equipment, and Abatement Technologies, known for HEPA capture systems. The exact setup varies by job size, but the principle doesn't: contain the dust, pull it out under vacuum, and filter it before it can reach your air. No shop vacs, no blowing dust out through a window. This is professional-grade containment work.
We clean the duct systems those brands connect to. Honeywell and Aprilaire are common in Los Angeles homes, mostly for thermostats, media filters, and whole-home filtration accessories installed at the furnace or air handler. Our job is the ductwork those systems push air through. If you have a Honeywell media cabinet or an Aprilaire filter housing, we clean around it and make sure the surrounding duct runs are clear. If the filter itself is clogged, we'll point it out during the inspection. A high-end filter can't do its job if the ducts feeding it are coated in years of accumulated dust.
It's smart to clean ducts before or right after a new HVAC system is installed, especially in Los Angeles where systems run hard through long summers. Old ducts carry the dust, construction debris, and years of accumulated particulates from the previous system. Hook a new furnace or air handler to dirty ductwork and it starts pulling that load through the new coil from day one. That's why many homeowners schedule duct cleaning around a replacement. It protects the new equipment, improves airflow, and gives the whole system a clean start. We coordinate regularly with HVAC installs across the city.
Licensing & Insurance FAQs
Every location operating under the Hollis Air Duct Cleaning name is required to hold the license and insurance their state mandates. We're part of the Garrison Partners family, and that standard is non-negotiable for every independent local business that carries the brand. Before a local team arrives for your job, they've met the network's requirements for coverage and compliance. You're welcome to ask the local team for their specific license information when they arrive for your estimate. The Garrison Standard exists so that no matter which location serves you, the baseline is the same: licensed, insured, and working by the book.
Licensed and insured means accountability. A company that carries proper insurance protects your home if something goes wrong during the job. A company with nothing to lose has no reason to be careful. In Los Angeles, duct cleaning doesn't require a specialized state license the way HVAC contracting does, which is why we require more of the locations in our network than the law does. When you call (361) 326-5060, you're connected with a local team that meets the Garrison Partners standard for licensing and insurance in their area, whatever local law requires and then some.
Emergency & Response FAQs
True emergencies in duct cleaning are rare, but we do handle urgent situations like post-fire smoke contamination, flood-related duct saturation, or vermin infestation that needs immediate attention. The local team nearest you can prioritize your job based on what we find when you call. Our phone line is open Monday through Friday from 7:00 AM to 7:00 PM and Sunday from 7:00 AM to 7:00 PM. Call (361) 326-5060 and explain the situation. If it's urgent, we'll do everything we can to expedite the estimate and get a local team scheduled quickly.
Call us as soon as you can. Water in ductwork saturates the dust and debris already inside, turning it into a paste that hardens as it dries and creates conditions for mold growth in humid Los Angeles air. The sooner we can inspect and extract the moisture, the better the outcome. Depending on the extent of the damage, the local team may recommend cleaning after drying or addressing sections of ductwork that need replacement. This is one situation where waiting genuinely makes the problem worse. Our line is open every day of the week except Saturday, so call (361) 326-5060 and we'll get a local team on it.
Yes, and Los Angeles homeowners know this isn't hypothetical. Wildfire smoke pushes fine particulate through windows, doors, and HVAC intakes, and a portion of that settles in ductwork where it lingers long after the sky clears. Post-fire cleaning requires the same HEPA negative-air approach we use on every job, but often with additional filter changes due to the fine ash load. If your home was near a recent burn area and you smell smoke when the system runs, that's particulate sitting in the ducts. We can inspect, show you what's in there, and clean it out properly.
Our phone line is open Monday through Friday, 7:00 AM to 7:00 PM, and Sunday from 7:00 AM to 7:00 PM. We're closed Saturday. When you call, a live coordinator answers and connects you with the local Hollis Air Duct Cleaning team that covers your address. Scheduling is done around those hours, and the local team will set an arrival window they'll honor. If you miss us outside those hours, leave a message and we'll call back the next business morning. No automated phone trees, no waiting on hold through a menu. (361) 326-5060.
DIY vs. Professional FAQs
You can clean the parts you can see, but not the parts that matter. Removing vent covers and vacuuming what's reachable is fine maintenance, but the trunk lines and branch runs need professional negative-air equipment to actually dislodge and extract accumulated debris. Home vacuums and shop vacs don't pull enough air to clear a duct run, and DIY attempts often loosen dust without capturing it, which just redistributes it through the home. The job also requires access cuts and resealing that need proper materials. If you're handy, you can keep vent covers clean. The system itself needs a pro.
It can be, mostly due to attic access, crawlspaces, and HVAC equipment. Duct systems in Los Angeles homes are often in tight attics with exposed insulation, wiring, and framing. Moving through those spaces with improvised tools risks falls, electrical contact, and damaged equipment. There's also the respiratory side of it: agitating years of accumulated dust without HEPA containment sends a cloud of particulates right into your living space, which is worse than leaving it alone. Professional duct cleaning is one of those services where the equipment matters more than the intention. We wear proper protection, run containment, and do the job by the book.
Warranty & Guarantee FAQs
Every Hollis Air Duct Cleaning job is covered by The Garrison Standard, which includes a full year of workmanship guarantee. If something we cleaned fails within that year, if a system we serviced doesn't perform as it should due to our work, we come back and make it right at no charge. The guarantee is written, not verbal, so you know exactly what's covered before you pay. It covers the work we performed and the areas we accessed. That's the standard every Garrison Partners location operates under, and it's the reason we stand behind it in writing, not just in conversation.
The Garrison Standard is the operating code every location in the Garrison Partners family agrees to work under. It's five commitments: show up inside the window we gave, price in writing before any work starts, do it by the book the first time, leave the site clean and squared away, and stand behind the work for a full year. Those aren't marketing phrases. They're the rules each independently owned Hollis Air Duct Cleaning location lives by. When you call (361) 326-5060, you're connected with a local team that agreed to those terms before they ever put the name on a van.
Tell us and we'll make it right. The Garrison Standard has a one-year workmanship guarantee attached to every job, and that guarantee is the mechanism for exactly this situation. If something was missed, if a section of ductwork wasn't cleaned to standard, or if the site wasn't left the way it should be, the local team returns and corrects it at no charge. You don't have to argue your case through layers of a national call center. The local team that did the job is accountable for the work, and the brand stands behind them. Call (361) 326-5060 and we'll get it addressed.
Written by Roy Castellanos, owner at Hollis Air Duct Cleaning, serving Los Angeles with the Garrison Standard and the full weight of the Garrison Partners network behind every job.
Still Have Questions?
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(361) 326-5060