Whole-home duct 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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AfterHow Much Does Air Quality & Sanitizing Cost in Santa Clarita?
Air quality and sanitizing services in Santa Clarita typically cost between $195 and $520 for a standard single-family home, with most homeowners paying around $320 for a complete HVAC system sanitizing and air quality treatment. Larger homes with multiple HVAC units, or jobs that include mold remediation or duct sealing, can push the total to $750 or more. These are written-price numbers for this market in 2026, not teaser rates that move once a technician walks through the door.
At Hollis Air Duct Santa Clarita, the price gets written down before any work starts. Roy Castellanos runs our Santa Clarita operation, and the number on that written quote is the number you pay. It’s part of The Garrison Standard that every Hollis location follows: price it in writing, do it by the book, leave the site clean.
Air Quality & Sanitizing Cost Breakdown (2026)
Here’s what people in Santa Clarita actually pay for air quality and sanitizing work in 2026. These ranges cover what we see across Valencia, Canyon Country, Saugus, and Newhall, where home sizes and HVAC setups vary enough to create real spread in pricing.
| Service | Price Range | What’s Included |
|---|---|---|
| Whole-Home Air Quality Assessment | $95 – $180 | Inspection of ductwork, filters, and airflow; written findings |
| HVAC Sanitizing (single unit) | $195 – $350 | Antimicrobial fogging of supply and return plenums, coil cleaning |
| Whole-Home Sanitizing + Duct Cleaning | $350 – $550 | Full negative-air duct cleaning plus sanitizing treatment |
| Dryer Vent Sanitizing + Cleaning | $125 – $225 | Vent run cleaning and sanitizing, lint trap inspection |
| UV Air Purifier Installation | $450 – $900 | UV-C lamp installed in supply plenum, wiring, and performance check |
| Whole-House Media Filter Upgrade | $275 – $500 | Filter housing, MERV 11 – 16 media, static pressure check |
| Duct Sealing (mastic or Aeroseal) | $800 – $2,500 | Sealing leaks in duct runs; price scales with access and duct length |
Those numbers hold for the typical Santa Clarita single-family home, which in 2026 still skews toward 1,800 to 2,800 square feet with one or two HVAC systems. If you want a quick line-item price for the job you’re facing, call (661) 523-0295. We’ll write it down and hand it to you before any equipment comes off the truck.
What Affects Air Quality & Sanitizing Pricing in Santa Clarita
Nobody likes a pricing mystery. Here are the factors that actually move the number, explained the way we’d explain them on a job walk.
- Home size and number of HVAC systems. A 1,400-square-foot condo in Valencia with one rooftop unit costs less to treat than a 3,400-square-foot two-story in Saugus with separate upstairs and downstairs systems. More systems, more time, more material.
- Ductwork condition. Santa Clarita’s dry, dusty summers push a lot of fine particulate through return ducts. If the duct runs haven’t been cleaned in years, the sanitizing step takes longer because there’s more surface film to treat. We see this constantly in older Valencia neighborhoods and throughout Canyon Country.
- Filter type and existing filtration. If your system already runs a quality media filter from Aprilaire or Honeywell, the sanitizing job is more straightforward. If the system has been running a $3 fiberglass filter, we’re dealing with more buildup, and we may recommend a media filter upgrade as part of the treatment.
- Access to the equipment. Attic-mounted air handlers with reasonable access cost less to service than crawlspace or closet installs that require tight work. Some Santa Clarita homes built in the 1980s and 1990s have furnaces shoehorned into closets, and that access friction shows up in the labor line.
- Scope of the sanitizing. A basic coil-and-plenum sanitizing is one thing. Treating the full duct run interior with an antimicrobial fog through the supply registers is another. The second job takes longer and uses more material, and it’s usually the better option if you’re dealing with persistent odors or post-construction dust.
- Mold or moisture findings. Santa Clarita’s summer heat doesn’t create the humidity problems you’d see in coastal markets, but evaporator coils still condense water. If a coil has been growing microbial film, the remediation scope expands, and the price goes up. We’ll show you what we find before we quote anything.
The Garrison Standard exists for exactly this reason. The written price accounts for access, system count, and scope, and it doesn’t move at the door. Roy and his crew write it down, you approve it, and the work starts. If something changes mid-job, we stop and put the change in writing before continuing. No surprise line items.
Hollis Air Duct Santa Clarita Pricing Philosophy
We’re not the cheapest bid in Santa Clarita, and we don’t try to be. We’re the bid with a written price and a 365-Day Done Right Promise behind it. That promise means this: if the sanitizing or air quality work fails within a year, we come back and make it right at no charge. That includes a free second visit, not a negotiated “let’s see what went wrong” follow-up. Everything from our home base in Santa Clarita runs on that standard.
The equipment we use is commercial-grade, not hardware-store gear. Rotary brush systems from Rotobrush, negative-air machines from Nikro, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. A negative-air machine means we’re pulling air out of the ducts while we work, so the dust we dislodge doesn’t blow back into your living room. A rotary brush system means we’re physically agitating the duct walls instead of just blowing air at them. The difference matters, and it’s part of why we put guarantees in writing.
How to Save on Air Quality & Sanitizing
Saving money on this work isn’t about finding the cheapest bid. It’s about not paying twice. Here’s what actually reduces your total cost over time.
- Bundle the sanitizing with duct cleaning. Doing both in one visit costs less than two separate trips, because the setup and equipment staging happen once. A typical whole-home clean-and-sanitize in Santa Clarita runs $350 to $550 bundled, versus paying separately for each.
- Handle two systems at once. If you have separate upstairs and downstairs HVAC units, scheduling both on the same day lowers the overall labor line compared to two separate service calls.
- Upgrade the filter once, properly. A media filter housing from Aprilaire or Honeywell costs more up front than a $3 fiberglass filter. But it does the daily work of keeping coil and duct surfaces cleaner, which means the next sanitizing job goes faster and costs less.
- Get the written estimate before committing. Free estimates mean you know the number before you say yes. Call (661) 523-0295 and we’ll give you a line-item price for your home, your systems, and your scope. Written, before any work starts.
- Don’t pay for a sanitizing you don’t need. If your system was cleaned and treated within the last 18 months and the filters are still in decent shape, you might not need the full treatment. Ask the tech to show you what they’re seeing before approving anything. A disciplined company will show you the evidence, not just tell you about it.
A word on maintenance frequency in Santa Clarita specifically: our dry season runs long, and wildfire smoke from the surrounding Angeles National Forest has made its way into the valley multiple times in the last decade. Homes downwind of those events tend to benefit from a full sanitizing cycle sooner than homes that haven’t faced smoke exposure. If you’re in Stevenson Ranch or along the 14 corridor toward Acton, you’ve likely seen the haze. That particulate settles in ducts and on coils, and it’s worth treating when it does.
Air Quality & Sanitizing in Santa Clarita: What the Work Actually Includes
Before you spend money, know what you’re paying for. A proper Air Quality & Sanitizing in Santa Clarita job isn’t a spray-and-walk. Here’s what a full treatment at Hollis includes.
First, we assess. That means checking your supply and return plenums, the evaporator coil if it’s accessible, the blower wheel, and the filter situation. We’re looking for dust accumulation, moisture signs, microbial growth, and airflow restrictions. The assessment findings get written down and shown to you directly.
Second, we clean what’s cleanable. Coils, blower wheel, drain pan, and duct runs. On duct runs, we use the negative-air method. A Nikro negative-air machine creates negative pressure inside the duct system while a Rotobrush rotary brush agitates the walls. The combination dislodges and extracts, instead of blowing around.
Third, we sanitize. This is an antimicrobial treatment applied to the coil, plenum, and duct interiors. It addresses the microbial film that builds up from condensation and airborne bacteria. The products we use are EPA-registered for HVAC use, and we’ll tell you exactly what’s being applied before it goes in.
Fourth, we verify. Airflow check, static pressure check, and a visual walkthrough of the treated areas. You see the results, not just a verbal summary.
The whole process on a typical Santa Clarita home takes three to five hours. Price is set before we begin. The cleanup is part of the job, not an extra. And if anything about the work doesn’t hold up, the 365-Day Done Right Promise covers it in writing.
When Sanitizing Alone Isn’t Enough
Sometimes air quality problems come from leaks in the duct system, not just buildup on surfaces. If your ducts are pulling dusty attic air into the supply stream, the cleanest coil in the world won’t fix the problem. Duct sealing with mastic, or the Aeroseal process, closes those leaks. In Santa Clarita, duct sealing runs $800 to $2,500 depending on duct length, access, and the sealing method used.
We’ll flag this during the assessment if we see it. The written estimate will separate the sanitizing work from the sealing work, so you know exactly what each line item costs and why it’s being recommended. No bundling games. If you want just the sanitizing and want to think about the sealing, that’s your call, and the quote will show both options clearly.
Why Hollis Air Duct Santa Clarita Writes Prices Down
The most common complaint homeowners have about air quality and duct companies is a price that moves. The estimate says one number, the technician finds “unexpected problems,” and the bill comes in $400 higher. It’s a script, and it works because homeowners feel stuck once the work has already started.
Here’s how our process works instead. You call (661) 523-0295. A live person answers, any time of day. You schedule a free estimate. The technician arrives inside the quoted window, in uniform, with a background check already on file. The assessment happens. The written price gets handed to you. You decide. No pressure, no clock, no “today only” garbage. Roy Castellanos sets that tone for the whole Santa Clarita crew, and it holds on every job.
It’s the way the trade should work. It’s also the way The Garrison Code requires it.
FAQs – Air Quality & Sanitizing Cost
How much does air quality testing cost in Santa Clarita?
Basic air quality assessments in Santa Clarita run $95 to $180, depending on home size and system count. A full assessment with microbial sampling from a third-party lab can run higher, but most homeowners get what they need from a thorough visual and airflow inspection. Call (661) 523-0295 for a free estimate on the assessment scope that fits your home.
Is air duct sanitizing worth the cost?
For most Santa Clarita homes, sanitizing costs between $195 and $550 and is worth it if you’re dealing with persistent odors, post-renovation dust, or a home that’s never had it done. If your ducts are clean and your symptoms are mild, a filter upgrade might address the issue at a lower price point. We’ll tell you which situation you have, in writing, before we quote anything.
How much does whole-house air purifier installation cost?
UV air purifier installation in Santa Clarita runs $450 to $900, including the lamp, wiring, and verification. Media filter upgrades run $275 to $500. Both are more effective than plug-in room purifiers because they treat the air at the system level, not just in one room. Call (661) 523-0295 and we’ll walk you through which option fits your home and budget.
Can you sanitize air ducts the same day?
In most cases, yes. A standard single-system sanitizing in Santa Clarita takes three to five hours, and we can often schedule it same-day or next-day depending on call volume. Emergency sanitizing after a smoke event or water intrusion gets prioritized. Call (661) 523-0295 and we’ll give you an honest window, not a promise we can’t keep.
Is it cheaper to sanitize or replace ductwork?
Sanitizing costs $195 to $550 for a standard home, while full duct replacement in Santa Clarita runs $3,000 to $8,000 depending on access and home size. Most duct systems benefit from cleaning and sanitizing long before replacement is necessary. If your ducts are leaking or collapsing, sealing or replacement is the right call, and we’ll show you the evidence either way.
How often should Santa Clarita homeowners sanitize their ducts?
Every 3 to 5 years for most homes in Santa Clarita, with more frequent treatment after wildfire smoke, significant renovation dust, or a water intrusion event. If you’re in an area that catches smoke from the Angeles National Forest, check your filters more often and ask about sanitizing when you see heavy buildup. The 365-Day Done Right Promise covers the work for a full year, so you’re not paying twice for anything we did wrong.
Key Takeaways
- Typical cost: $195 to $520 for air quality and sanitizing work on a standard Santa Clarita single-family home.
- Bigger jobs: Whole-home sanitizing plus duct cleaning runs $350 to $550; UV purifier installation runs $450 to $900; duct sealing runs $800 to $2,500.
- Price drivers: home size, number of HVAC systems, duct condition, access difficulty, filter type, and any mold or moisture findings.
- Written pricing: Every Hollis job in Santa Clarita gets a written price before work starts. The number doesn’t move at the door.
- Guarantee: The 365-Day Done Right Promise covers every sanitizing and air quality job in writing for a full year. If it fails, we return at no charge, including a free second visit.
Get Your Written Estimate
If you want a real number for your home in Valencia, Saugus, Canyon Country, Newhall, or anywhere else in Santa Clarita, call Hollis Air Duct Santa Clarita at (661) 523-0295. Roy Castellanos and his crew will assess your system, write down the price, and let you decide with the facts in front of you. No pressure, no moving numbers, no nonsense. That’s the standard.
Pricing reflects the Santa Clarita market as of 2026. Hollis Air Duct Santa Clarita offers free estimates – call (661) 523-0295.
Written by Roy Castellanos, Owner at Hollis Air Duct Santa Clarita, serving Santa Clarita since 2004.
What Our Customers Say
"Good job on the ducts. Ran about an hour over the estimate, though they told me early. Air smells cleaner."
- Mike E."Careful with the carpet and furniture. Even wiped down the vent covers before putting them back."
- Leo B."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.