Whole-home duct cleaning
Dryer vent cleaning
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Sanitizing & deodorizingWhole-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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Before
AfterCommercial Duct Cleaning in Los Angeles, CA
While our Residential Duct Cleaning service is also available, commercial duct cleaning in Los Angeles typically costs between $0.35 and $0.70 per square foot, with most office spaces and retail storefronts running $1,200 to $4,500 depending on building size, duct configuration, and how long it’s been since the last cleaning. Kestrel Air Duct Los Angeles gives you a written price before any work begins, so you’ll know the exact number before our technicians touch a single vent. If you manage a building or run a business anywhere from downtown LA to the Valley, call us at (213) 733-0665 and we’ll schedule a walkthrough.
This is different from residential Air Duct Cleaning in one big way: commercial systems move vastly more air, run longer hours, and serve more people. A restaurant kitchen exhaust, a dental office, a gym, a warehouse with dust-generating operations – each has ductwork that accumulates buildup faster and thicker than any home. We’ve been cleaning commercial systems since 2004 under the Kingswell Guarantee, and that standard applies to every rooftop unit, every branch line, and every register we touch. The written price, the defined arrival window, the clean job site, and the written guarantee – all four hold on commercial jobs, same as residential.
We’re part of the Kingswell family of companies, and our technicians arrive in uniform, background-checked, and equipped with Rotobrush rotary brush systems and Nikro negative-pressure units. The work is methodical. The pricing is fixed before we start. And the guarantee is in writing, not implied.
When You Need Commercial Duct Cleaning
Most commercial clients call us because they’ve noticed one of these specific problems. If any of them sound familiar, the ductwork is usually the place to look:
- Dust settling on desks, shelves, and merchandise within days of cleaning. If your office in Koreatown or your retail space in West Adams films over with dust that fast, the ducts are recirculating particulates back into the occupied space every time the HVAC cycles.
- Staff complaints of stale air, headaches, or allergy symptoms that ease when they leave the building. We hear this most from buildings in older commercial corridors like Broadway or Wilshire, where decades-old ductwork hasn’t been opened in years. What’s in the ducts is moving through the air your team breathes all shift.
- Visible dust or dark streaks around supply registers and ceiling diffusers. Those streaks are the telltale sign of particulate blowback from the duct interior. If the diffuser looks dirty on the outside, the inside is worse.
- Higher HVAC operating costs or units cycling more frequently. When buildup coats the evaporator coil or restricts airflow through branch lines, the system works harder to maintain the same temperature. In Los Angeles, where cooling runs hard from June through October, that restriction shows up on the utility bill fast.
- Odor that persists after routine cleaning efforts. Duct interiors hold whatever has been pulled through them – cooking grease in a restaurant, moisture from a coastal building near the water, dust from a print shop or woodshop. If the smell returns a week after the janitorial crew wipes surfaces, it’s living in the ductwork.
- Tenant turnover in a building you manage. Every new tenant in a commercial space deserves clean ducts on move-in, and every departing tenant leaves behind particles you don’t want the next occupant inheriting.
One more thing worth saying plainly: if you own or manage a food-service business in Los Angeles, routine duct cleaning is not optional – it’s a fire and health-code consideration. Grease-laden vapor deposits inside exhaust ductwork are combustible, and buildup in kitchen exhaust systems is one of the most common sources of restaurant fires. That’s a safety issue, not a comfort issue. Have it cleaned professionally and on a schedule.
Our Commercial Duct Cleaning Process
Here’s exactly how a commercial job with Kestrel Air Duct Los Angeles runs, from the first call to the final walkthrough:
- Walkthrough and assessment. We walk the property with you, identify every rooftop unit, every branch line, and every register that needs attention. We look at access points, system age, and current condition. This is also when we set the arrival window, in writing, for the day of the job.
- Written quote before any work begins. You get a fixed price on paper – or by email – before a single vent is opened. That number does not change at the door. It’s a standing commitment under the Kingswell Guarantee, not a promotional offer. If the scope changes because we find something unexpected, we stop, show you, and agree on the adjustment before proceeding.
- Negative-air containment setup. We connect a Nikro negative-pressure extraction unit to the duct system. In plain terms: the machine pulls air out of the ducts under constant suction, which keeps loosened debris from escaping into your occupied space during the cleaning. Think of it as a surgical field for your air system – what we dislodge goes out, not out into the room.
- Rotary brush agitation. A Rotobrush rotary brush system runs through the main trunks and branch lines, mechanically scrubbing debris off the duct walls. Brush agitation means exactly that: rotating bristles make contact with the duct surface and break up the caked-on layer that vacuum suction alone can’t remove. This is the step that separates a real cleaning from a superficial one.
- HEPA-filtered extraction and register cleaning. With the debris dislodged, the negative-pressure system pulls it all out through Abatement Technologies HEPA filtration, which traps the fine particles so they never re-enter the building. We then clean registers, grilles, and diffusers so what you see matches what we cleaned.
- Before-and-after documentation and written guarantee. We show you what we removed and confirm the system’s condition in writing. Every job carries the 365-Day Done Right Promise: if the work falls short within the guarantee period, we return and make it right at no charge. No fine print, no phone tag – just the guarantee you can point to.
That’s The Kingswell Way: say the price, show up in the window we gave, leave the place cleaner, put the guarantee in writing, come back if it fails. Written into every commercial job we run in Los Angeles.
Commercial Duct Cleaning Pricing in Los Angeles
Here’s what commercial duct cleaning costs in the Los Angeles market, based on the jobs we run across the city:
| Property Type | Typical Size | Price Range |
|---|---|---|
| Small retail storefront or office | 1,000 – 2,000 sq ft | $1,200 – $2,400 |
| Mid-size office or medical suite | 2,000 – 5,000 sq ft | $2,400 – $3,800 |
| Restaurant with kitchen exhaust | Varies widely | $1,800 – $5,000+ depending on hood and duct length |
| Large office floor or light industrial | 5,000 – 15,000 sq ft | $3,800 – $6,500 |
| Warehouse or high-ceiling space | 15,000+ sq ft | $5,500 – $10,000+ |
What actually moves the number? Three things, mostly. First, the number of rooftop units and access points – more units mean more setup time, more containment runs, more labor. Second, how long it’s been since the last cleaning. A building in Hollywood whose ducts haven’t been touched in fifteen years takes longer than one we cleaned three years ago. Third, whether there’s a kitchen exhaust component, which adds specialized equipment and fire-code considerations.
We don’t bid jobs over the phone sight unseen. The right move is a walkthrough, which we do free of charge within the Los Angeles metro area. That’s when you get the written number, and that number is what you pay. No door-step revisions, ever. Call (213) 733-0665 and we’ll get your building on the schedule.
For commercial property owners who want to keep air quality stable between service visits, we also supply filtration from Honeywell and Aprilaire – the kind of media filters and IAQ upgrades that catch particulates as they pass through the return, extending the value of each Return Duct Cleaning. We’ll talk through options during the walkthrough if that’s useful to you.
How Much Does Commercial Duct Cleaning Cost Per Square Foot in Los Angeles?
Commercial duct cleaning in Los Angeles generally runs $0.35 to $0.70 per square foot, though restaurants with kitchen exhaust almost always land higher per foot because of the grease-removal labor involved. Calling around, you’ll see per-vent pricing too, but we quote per job after a walkthrough, not per vent, because per-vent pricing is how you end up with mid-job add-ons. The written quote is the whole quote. Call (213) 733-0665 for a free walkthrough and an exact number.
Is It Cheaper to Clean Commercial Ducts or Replace the System?
Cleaning is significantly cheaper than replacement in every commercial scenario we’ve seen in Los Angeles. A Full System Cleaning runs $1,200 to $6,500 for most spaces, while replacing even a modest commercial duct system starts around $8,000 and climbs past $25,000 for larger layouts. If the ducts are structurally sound – no rust-through, no collapsed sections, no separated joints – cleaning is the rational choice, and it also extends the useful life of the equipment. If we find damage during the walkthrough, we’ll tell you plainly and you can make the call with numbers in hand.
Do You Clean Kitchen Exhaust Ducts?
Yes, we clean commercial kitchen exhaust ductwork including the hoods, branch runs, and rooftop fans. Grease-laden vapor solidifies inside these ducts and becomes fuel, which is why most fire codes require a documented cleaning schedule for any commercial kitchen. We do the cleaning and we give you documentation for your records. The work is done with the same Kingswell Guarantee: written price first, written guarantee after, no surprises in between.
Will Duct Cleaning Disrupt My Business?
Most commercial duct cleaning in Los Angeles can be done after hours or over a weekend, which is how we schedule the majority of our office, retail, and restaurant jobs. If your building operates 24/7, we’ll work section by section with temporary containment so one zone keeps running while another gets cleaned. We’ll agree on the schedule during the walkthrough and put it in the written quote. The work is less disruptive than most facility managers expect, and we leave the space cleaner than we found it – that’s part of The Kingswell Way, not a courtesy.
FAQs – Commercial Duct Cleaning
How often should commercial ducts be cleaned?
Most commercial buildings in Los Angeles should have their ducts cleaned every 3 to 5 years. Restaurants and food-production spaces need kitchen exhaust cleaning every 3 to 12 months depending on cooking volume and fire-code requirements. Buildings near construction zones, busy boulevards, or with heavy occupant turnover often benefit from cleaning on the shorter end of that range. If you don’t know when your building was last cleaned, call us at (213) 733-0665 and we’ll do a walkthrough and give you an honest assessment.
What’s included in the written quote?
The quote covers everything: the rooftop unit access, all main trunks and branch lines, every register and diffuser, containment setup, cleanup afterward, and the written guarantee. No separate fees for travel within Los Angeles, no materials surcharge tucked in later, no per-vent add-ons. The number is fixed before we start, and if we discover something that genuinely changes the scope, we stop and discuss it with you before any additional work proceeds. Call (213) 733-0665 to schedule the free walkthrough that produces your number.
Do you work on buildings with multiple HVAC zones?
Yes. Multi-zone buildings are standard for us, whether it’s a two-zone office in Culver City or a six-unit retail strip in the Valley. We clean each zone as its own system, with containment set up per unit so debris from one zone never migrates into another. Each zone gets its own before-and-after documentation, and the overall quote reflects the total scope from the start, so there’s no ambiguity about what was cleaned and what it cost.
What does the 365-Day Done Right Promise cover on a commercial job?
If anything we cleaned falls short of the standard we documented within 365 days, we return and make it right at no charge. If the work fails again after a repair or a return visit within the guarantee period, you get a second visit free as part of the written guarantee – not as a favor, but as a term of the Kingswell Guarantee on every commercial project. To invoke it, just call us and reference the job. You don’t need a case number or a supervisor’s approval.
Written by Dale Whitmore, Owner at Kestrel Air Duct Los Angeles, serving Los Angeles.