Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
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 Dallas?
Air quality and sanitizing for a typical single-family home in Dallas runs between $295 and $750 in 2026, with most homeowners paying around $450. The range depends on home size, the sanitizing method used, and whether duct cleaning is bundled in. Hollis Air Duct Dallas writes the price down before any work starts, so the number you’re quoted is the number you pay.
Air Quality & Sanitizing Cost Breakdown (2026)
Here’s the line-item pricing we see across the Dallas market, from East Dallas to Plano to Richardson. These are the ranges we quote and the ranges our competitors quote for comparable work.
| Service | Typical Dallas Price Range | What’s Included |
|---|---|---|
| Whole-home air duct sanitizing | $295 – $450 | EPA-registered sanitizer applied through the full duct system after cleaning |
| Duct cleaning + sanitizing bundle | $450 – $750 | Rotary brush or negative-air cleaning, then sanitizer fog through all supply and return ducts |
| Dryer vent sanitizing add-on | $75 – $125 | Kills mold spores and bacteria inside the dryer vent line |
| UV light installation (per unit) | $650 – $1,200 | In-duct UV-C system installed at the air handler or plenum |
| Whole-home air purification system | $850 – $1,800 | Professional installation of a Honeywell or Aprilaire purification unit at the HVAC system |
| Standalone sanitizing (no duct cleaning) | $250 – $400 | Sanitizer fog through ducts without mechanical cleaning first |
For a 2,000 square foot home in Dallas, the most common job we do is the duct cleaning and sanitizing bundle at $450 to $650. Homes with two HVAC systems, like many two-story homes in Preston Hollow or Lake Highlands, land on the higher end because both systems have to be treated separately. One thing to know: if a company quotes you $99 for “whole-home air sanitizing” in Dallas, that price is a foot in the door, not the final bill. We don’t do business that way.
What Affects Air Quality & Sanitizing Pricing in Dallas
Here’s what actually moves the number up or down. These aren’t guesswork factors, they’re the same ones we apply when we build a written quote.
- Square footage and duct footage. A 1,200 square foot condo in Uptown has roughly 60 to 80 linear feet of ductwork. A 3,500 square foot home in Frisco has 250 feet or more. More duct length means more sanitizer, more labor time, and a higher price.
- Number of HVAC systems. Dallas homes built before 1990 often have one system. Homes built since 2005, especially two-story homes, frequently have two. Each air handler and plenum has to be treated individually.
- Duct condition. Older Dallas homes, especially those built in the 1960s and 1970s in areas like Casa View or Lochwood, often have fiberglass duct board or badly deteriorated flex duct. Sanitizing works best after a full mechanical cleaning, and heavily soiled ducts take longer to clean first.
- Contaminant type. If we’re treating mold spores from a past water leak, the job is straightforward. If we’re treating odors from tobacco smoke or pet dander that’s been baked into the ducts for 15 Dallas summers, the sanitizer has to dwell longer and we may need a second pass.
- Access difficulty. Attic-mounted air handlers in Dallas get brutally hot in summer, and cramped mechanical closets slow the work down. If we need to cut an additional access point because there isn’t one, that’s a line item on the written quote, not a surprise at the door.
- Sanitizer type. Basic EPA-registered sanitizers cost less per gallon. Hospital-grade or botanical sanitizers with longer residual action cost more. We’ll tell you what we’re using and why before we spray anything.
Air Quality & Sanitizing Costs: Dallas vs. Nearby Cities
Pricing across North Texas is fairly consistent, with some variation. Here’s what we see when comparing Dallas to surrounding markets.
- Dallas proper: $295 – $750. The baseline market, with the widest range because housing stock ranges from 1920s bungalows in Winnetka Heights to brand-new builds in north Dallas.
- Plano and Frisco: $350 – $800. Larger average home sizes and more two-system houses push prices slightly higher.
- Garland and Mesquite: $275 – $650. Older housing stock, more single-system homes, but often dirtier ducts due to decades of dust and Dallas humidity.
- Irving and Richardson: $300 – $700. Mid-range, with a mix of older and newer homes.
If you’re comparing quotes from a Dallas contractor and a national franchise, ask both for a written price. The national franchises often quote a base price and then add per-vent charges, “mold treatments,” and equipment fees once the technician walks the house. Our price is written before we start and doesn’t move.
What Exactly Is Air Quality & Sanitizing?
Sanitizing isn’t the same as cleaning. Here’s the distinction in plain terms. Duct cleaning removes the physical debris: dust, pet hair, drywall dust, construction debris, the things you can see and feel. Sanitizing goes after what you can’t see: mold spores, bacteria, and odor-causing organisms that cling to the inside of the ducts.
We apply sanitizer using a fogger that pushes a fine mist through the entire duct system. The sanitizer is EPA-registered for use inside air ducts. After the fog settles, the inside of the ductwork carries far fewer live organisms than before. That’s the whole job in plain terms.
When we combine sanitizing with our Air Quality & Sanitizing in Dallas service, the cleaning happens first, then the sanitizer fog goes through. Doing it in that order matters. Spraying sanitizer onto a layer of dust doesn’t reach the duct surface, and the sanitizer burns itself out on the dust instead of doing its job.
How the Hollis Air Duct Dallas Process Works
We run every job the same way, no matter the size of the house. The process is built into The Garrison Code, the operational standard that governs how our technicians behave on a job: arrive inside the quoted window, price in writing before work starts, do the work by the book, and leave the site clean.
- Walkthrough and written quote. We look at your air handler, your duct layout, your returns, and access points. We write the price down on paper. That’s the price. It doesn’t change.
- Mechanical cleaning. If the job includes cleaning, we use a Rotobrush rotary brush system for the ducts and a Nikro negative-air machine to keep dust from blowing back into the living space. The negative-air machine creates vacuum pressure inside the duct so loosened debris goes into our containment system, not your furniture.
- Sanitizer application. We run the sanitizer fog through both the supply and return sides of the system. The fog reaches the full duct run, including hard-to-reach branches.
- Post-treatment walkthrough. We show you what we did, answer any questions, and leave the site as clean or cleaner than we found it.
Every Hollis Air Duct Dallas technician is background-checked and uniformed. You know who’s coming into your house before they arrive, and the person who shows up is the person assigned to your job.
Does Sanitizing Actually Help with Dallas Allergies?
Dallas is one of the worst allergy cities in the country. Cedar from the Hill Country hits in January. Oak pollen in March. Ragweed in the fall. Grass pollen all summer. What most people don’t realize is that your HVAC system recirculates indoor air through the same ducts all day, and those ducts can hold allergens long after the outdoor pollen count drops.
Sanitizing doesn’t stop outdoor pollen from coming in. But it does reduce the load of what’s already inside your ductwork: pollen that settled there, dust mites, pet dander, mold spores from Dallas humidity, and bacteria that feed on all of it. For a homeowner who’s already running a good filtration system, sanitizing is the next step in cutting indoor allergen load.
We install filtration products from Honeywell and Aprilaire, and we’ll tell you honestly whether sanitizing or better filtration is the better first move for your house. Sometimes it’s both. We’ll tell you what you need and what you don’t, because a written price means nothing if it’s for the wrong work.
How to Save on Air Quality & Sanitizing in Dallas
Smart savings come from doing things in the right order, not from cutting corners. Here’s what actually reduces your total bill.
- Bundle cleaning and sanitizing. The combined service costs less than booking them separately because we only set up the containment equipment once. You’ll typically save $75 to $150 compared to two separate visits.
- Change your filters before calling. A clogged filter starves the system and traps moisture, which makes mold and bacteria more likely. If your filter is clean, sanitizing lasts longer, and you won’t need a return visit.
- Book during the milder months. Dallas HVAC contractors are slammed from May through September and during the first cold snap in November. Booking in February, March, or October often gets you more scheduling flexibility and sometimes a lower rate.
- Treat all ducts at once. Sanitizing a single branch or a single return doesn’t work long-term. Air moves through the whole system. Treating everything once is cheaper than partial treatments that don’t solve the problem.
- Ask about the residual effect. Some sanitizers keep working for weeks after application. Others neutralize on contact and stop. We’ll tell you which one we’re using and how long it lasts, so you’re not paying for a “premium” sanitizer that doesn’t perform better than the standard option.
We offer free estimates on every job. Call (361) 309-6223, describe your home size, the number of systems, and what you’re dealing with, and we’ll give you a written price range before we ever step inside.
FAQs – Air Quality & Sanitizing Cost
How much does air duct sanitizing cost in Dallas?
Standalone duct sanitizing in Dallas runs $250 to $400, while a full duct cleaning plus sanitizing bundle runs $450 to $750 for a typical single-family home. The price depends on duct footage, number of HVAC systems, and whether the ducts need mechanical cleaning first. Call (361) 309-6223 for a written quote specific to your home.
Is air duct sanitizing worth the money?
For most Dallas homeowners, yes. If your ducts haven’t been cleaned in over three years, or if you’ve had a water leak, pets, or a smoker in the house, sanitizing kills the mold spores and bacteria that cleaning alone leaves behind. The average $450 to $650 bundle price is in line with what most Dallas homeowners pay for one service call from an HVAC contractor, and the effect lasts months longer than cleaning alone.
How long does air duct sanitizing last?
Most EPA-registered duct sanitizers provide active protection for 30 to 90 days, but the practical effect on odor and microbial load can last 12 to 18 months in a clean system with good filtration. If your ducts are clean and your filters are changed regularly, the sanitizing effect lasts much longer than if the ductwork is actively collecting dust. Call (361) 309-6223 and we’ll tell you what’s realistic for your home.
Can you sanitize air ducts without cleaning them first?
You can, but it’s not effective. Sanitizer applied to a dust-covered duct surface doesn’t reach the actual duct material, and the sanitizer gets consumed by the dust instead of killing organisms. The right order is mechanical cleaning first, then sanitizing. We won’t sell you a standalone sanitizing treatment if your ducts are visibly dirty because it won’t do what you’re paying for.
What does a UV light system cost to install in Dallas?
UV-C light installation in Dallas runs $650 to $1,200 per unit, with whole-home purification systems from Honeywell or Aprilaire running $850 to $1,800. UV lights work continuously to kill mold and bacteria on the coil and in the air stream, but they’re a supplement to cleaning and sanitizing, not a replacement. Call (361) 309-6223 for a written quote tailored to your HVAC setup.
Does the 365-Day Done Right Promise cover sanitizing?
Yes. Every air quality and sanitizing job we do in Dallas is covered in writing for a full year under the 365-Day Done Right Promise. If the work fails within that year, we return and make it right at no charge, including a free second visit. That’s not a verbal promise. It’s on the written quote before we start.
Why Dallas Homeowners Choose Hollis Air Duct Dallas
Hollis Air Duct Dallas is part of the Garrison Partners family, with roots going back to 2004. Roy Castellanos leads the Dallas operation. We don’t compete on teaser pricing or flashy ads. We compete on one thing: doing the job the way it’s supposed to be done, every time, with no surprises.
That means the price is written before work starts. The technician is background-checked and uniformed. The equipment is the same professional-grade gear commercial crews use: Rotobrush rotary brush systems for mechanical cleaning, Nikro negative-air machines for containment, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. And phones are answered by a live person 24 hours a day, 7 days a week. Not a voicemail queue, not a callback service. A person.
If you want a clear answer about what air quality and sanitizing will cost in your Dallas home, call us. You’ll get a written price and a straight explanation of what we’ll do, in plain terms, before you spend a dollar. Visit our home page to see the full range of services we offer in the Dallas market.
Get a Free Written Estimate in Dallas
Every estimate from Hollis Air Duct Dallas is free, and every quote is written down before any work starts. If you’re in Dallas, Plano, Frisco, Richardson, Garland, Irving, or anywhere in the metro, call (361) 309-6223 and describe your home size, the number of HVAC systems, and what you’re dealing with. We’ll give you a written price range on the spot. No pressure, no door-to-door surprises, no price that moves after we arrive.
Pricing reflects the Dallas market as of 2026. Hollis Air Duct Dallas offers free estimates – call (361) 309-6223.
Written by Roy Castellanos, Owner at Hollis Air Duct Dallas, serving the Dallas metro since 2004.
What Our Customers Say
"Pet hair all through the returns. The crew pulled out a whole bag of it. Smell is gone."
- Ana G."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H."Crew arrived in uniform at the exact time promised. Covered the floors, cleaned all the supply and return vents, and brushed out the main trunk. Vet-owned, and it shows in the discipline."
- Duane S.