Frequently Asked Questions - Air Duct Cleaning in North Hollywood, CA
Straight answers to the questions we hear most from homeowners across North Hollywood, Toluca Lake, and the surrounding Valley. If you don't see yours here, call (833) 589-9715 and ask us directly.
Pricing & Cost FAQs
Most single-family homes in North Hollywood run between $350 and $650 for a full-system cleaning, based on the number of furnaces, the size of the home, and how much buildup is in the ducts. Condos and apartments typically fall on the lower end, while larger Valley homes with multiple returns and long runs cost more. The number of vents matters less than the layout and accessibility. Every job gets a free written estimate before any work begins, so the price you agree to is the price you pay. Call (833) 589-9715 and we'll walk you through what applies to your house.
Low teaser quotes in this industry almost always come with a catch. A company advertises a per-vent price that sounds reasonable, then arrives and discovers mold, debris, or an inaccessible return that suddenly doubles the invoice. We don't price that way. Our estimate covers the whole system at one flat price, agreed before a single panel is opened. If a quote in the Valley looks dramatically lower than the $350 - $650 range typical here, ask what exactly it includes and whether the crew is insured. Cheap duct cleaning is often worse than none at all.
We price per system, not per vent. The idea of a per-vent rate sounds simple, but it creates exactly the kind of bait-and-switch pricing that gives this industry a bad name. A North Hollywood home might have 12 vents, a Sherman Oaks condo 8, and a Woodland Hills estate 25. Per-vent pricing punishes the larger home for having more ductwork. Our written estimate reflects the actual work: furnace count, access points, and how dirty the system is. One flat price, set before the tech arrives.
Yes. The estimate costs you nothing and carries no obligation. We come out, look at your system, and tell you exactly what it needs and what it will cost. If you decide not to move forward, you're not out a dollar. We'd rather you know the real number up front than wonder what hidden fees will appear later. Call (833) 589-9715 to schedule yours.
It can, and we recommend it for most North Hollywood homes. Lint buildup in a dryer vent is a fire hazard and a common cause of dryers running long cycles and still leaving clothes damp. We'll inspect the dryer exhaust while we're there and quote it as a separate line item so you always know what you're approving. The main duct cleaning covers supply and return ducts, registers, the air handler, and the plenum. The dryer vent is a different run of pipe and we treat it as its own scope of work.
Dirty ducts don't force your AC to work much harder, but a badly clogged evaporator coil and blower will. When we clean the system, we clean those components too, and that's where the efficiency gain lives. In a Valley summer, when your AC runs for hours every day from June through September, a clean blower and coil move air more freely. You may notice the house cools faster and the system cycles less often. The bigger win for most homeowners is air quality: less dust settling on furniture a week after cleaning, and less of that musty smell when the AC kicks on.
Service & Process FAQs
We start by walking through your home to see the system: where the furnace sits, how many returns feed it, whether you have a crawlspace or attic runs. Then we connect a high-powered vacuum to the main trunk line to create negative pressure, and go duct by duct with rotary brushes and air whips to dislodge the dust, pet hair, and construction debris that settle in Valley homes. The registers get wiped or replaced, the blower and evaporator coil get cleaned, and we show you before-and-after photos so you can see the work. Most jobs take two to four hours depending on system size.
Plan on two to four hours for a single-system home. A condo with a short duct run can be done in about two hours. A larger two-story house with multiple furnaces and long attic runs might take a full half day. The factors are the number of systems, how accessible the ductwork is, and how much buildup has accumulated. We'll give you a realistic window in the estimate. We don't rush the job to hit a slot, and we don't pad the time to look busy. The system gets cleaned thoroughly, and the photos prove it.
Not much. Clear a path to the furnace and the return registers if you can, and move any fragile items near floor registers so the tech has room to work. If you have pets, keep them in a room or with you during the visit. The process creates some noise from the vacuum and brushes, but it doesn't spread dust through the house, the negative pressure system keeps everything contained. We'll walk the property with you at the start so you know exactly where we'll be and what we're doing.
For most homes here, yes. The Valley sits in a bowl, and what settles in that bowl settles in your ducts. Dust from the 101 and 170 corridors, pollen from mature trees in Toluca Lake, pet dander, and the fine grit that blows in from the west end of the Valley it all cycles through your HVAC system every time the fan runs. If you see dust on furniture days after cleaning, if your vents have visible buildup, or if someone in the house has allergies that flare indoors, cleaning the ducts removes the reservoir that keeps recirculating that particulate. A clean system is easier to keep clean, and you'll see it in how fast the furniture dusts build back up.
North Hollywood and the surrounding Valley have a few things working against you. The dry climate means fine particulate stays airborne longer than it would in a humid coastal spot. Winds off the hills carry grit into the neighborhood. And older homes, which make up a big share of the housing stock here near NoHo and into Van Nuys, often have leaky ductwork that pulls attic dust into the living space. A duct cleaning plus a check of the seals and connections is the most direct fix. If the dust comes back within days, the ducts are usually the source.
You can vacuum the registers and wipe the vent covers, but that's surface work. The actual duct runs sit behind walls, in attics, and under floors, places you can't reach with a shop vac. Professional equipment matters: the vacuum systems we use, including units built by Abatement Technologies and Rotobrush, pull far more airflow than anything you can rent, and they capture the debris rather than stirring it up. The rotary brushes dislodge built-up film that a household vacuum won't touch. If you've never had the ducts cleaned in a home you've lived in for years, a professional cleaning is the only way to actually clear the system rather than just the last foot of it.
Brands & Parts FAQs
We run professional-grade negative air machines and rotary brush systems from manufacturers like Abatement Technologies and Rotobrush. These aren't rental units; they're built for the kind of repeated, daily use a Valley service company needs. The vacuum is sized to pull the full volume of the duct run, and the brushes are matched to the duct dimensions, so the agitation actually reaches the walls where debris sticks. The equipment choice matters as much as the technique. You can have great gear and still do a sloppy job, which is why the before-and-after photos are part of every visit.
Only when a system actually needs it, and always with the homeowner's informed approval. The default job is mechanical: vacuum, brushes, air whips. If we find mold growth or a persistent odor source, we'll explain what we found, what the options are, and the cost before anything is applied. We don't push sanitizers as an add-on upsell, and we don't spray anything into a duct system without you seeing the reason first. Every product we might use is applied by a trained tech following the label and the manufacturer's instructions.
No, and the difference shows in the result. The machines we use from Guardsman and Nikro are designed for full-system cleaning: powerful enough to pull negative pressure through long Valley duct runs, with HEPA filtration on the exhaust so nothing escapes back into your living space. Cheaper portable units often just stir dust around. The filter rating matters too, a HEPA-filtered negative air machine captures particles a standard filter lets pass through. When you pay for duct cleaning, the machine doing the work is a big part of what you're buying.
Licensing & Insurance FAQs
We carry insurance and every pro working under our name is required to hold the license and insurance the state of California requires. Air duct cleaning isn't a trade with a single statewide contractor's license class, which is exactly why you should ask any company for proof of insurance before they walk through the door. A crew with no insurance is your liability when something goes wrong. We're glad to provide our documentation on request. Call (833) 589-9715 and we'll answer whatever credential questions you have before you book.
Every person who works under the Onyx name goes through a screening process before they're sent into a home. We understand you're inviting a stranger into your house, and we take that seriously. The person who arrives at your door is the person dispatched to your job, with the equipment on the truck and the paperwork in hand. If you ever have a question about who's coming or what they'll be doing, the coordinator on the phone can tell you before the visit.
We serve North Hollywood and the surrounding Valley full time. This is our home turf, from the NoHo Arts District up to Burbank, over through Toluca Lake and Studio City, west into Sherman Oaks and Woodland Hills, and the rest of the San Fernando Valley. When you call, a live coordinator answers and connects you with the team that handles your neighborhood. We're not a call center that sells your job to whoever is nearby. The people who clean your ducts know the Valley, know the housing stock, and know what lives in the ducts here.
Same-Day Service & Response FAQs
Often, yes. We keep technicians staged across the Valley and can usually get someone out the same day you call, especially if you reach us earlier in the day. When same day isn't available, we'll find the next opening that works. Call (833) 589-9715. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. We're closed Saturday. If you call on a Saturday or outside dispatch hours, a live coordinator still answers and books you into the next opening. You'll never hit voicemail and never wonder whether anyone heard the message.
Yes. We're closed on Saturday for fieldwork, but the phone is answered. A live coordinator will take your call and book you into the next available slot, Sunday through Friday, 7am to 7pm. You won't get a recording or an answering service that promises a callback that never comes. Call (833) 589-9715 and a person picks up.
A live coordinator answers and asks a few quick questions: what kind of home you have, whether it's one system or two, and what you're noticing, dust, smells, poor airflow. Then we schedule a visit at a time that works for your schedule. The estimate is free. If you want to move forward, the price is set by the written estimate before work starts. The whole conversation takes five minutes and you'll know exactly what happens next.
Warranty & Guarantees FAQs
We stand behind the work and we show you the proof while we're still in your home. Before the tech packs up, you'll see before-and-after photos of your actual ducts, not a stock image from a website. If something doesn't look right or you have a concern after the visit, call us and we'll address it. Our goal is a system that stays clean and a customer who doesn't feel like they guessed on a service they couldn't see. The photos are the guarantee's backbone.
Because you'll see it. We photograph the interior of your ducts before and after cleaning, and we walk you through those photos while the tech is still on site. You'll see the buildup before, the clean metal after. You can also check the registers: the covers should be wiped clean, and the first few inches you can see into the duct should be free of dust. If you ever want to verify a specific area, ask, and the tech will show you. A company that won't show you the inside of your ducts is a company you shouldn't have hired.
We don't sell you a paper warranty that's designed to expire before you need it. What we promise is this: the system is clean when we leave, and you'll see proof of it before you pay. If something wasn't done right, call us and we'll make it right. That's the practical version of a warranty for a service like this, and it's the one we've kept since 2013.
Every three to five years for most homes here, sooner if you have pets that shed heavily, you've done renovation work, or someone in the house has significant allergies. The Valley's dry, dusty air means systems here load up faster than they do in wetter climates. New construction and remodels are a special case: drywall dust and sawdust get pulled into the returns and settle in the ducts, and that first big cleaning after a remodel makes a real difference. If you've never had the ducts cleaned since you moved in, that's your starting point regardless of how long it's been.
Written by the team at Onyx Duct Cleaning, serving North Hollywood since 2013.