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 Miami?
Air quality testing and sanitizing in Miami typically runs between $295 and $795 for a standard single-family home, with whole-house duct sanitizing and air quality treatment averaging $325 to $650. Homes over 2,500 square feet, or properties with significant mold, dust, or odor issues, can push the total to $900 or more. The exact figure depends on square footage, how many HVAC units serve the home, and whether you’re treating ducts only or the full living space.
Several months of the year, Miami’s humidity sits above 70 percent. That’s the number that matters when you’re talking about air quality, because it means your ductwork is a condensation magnet. Moisture collects on cool metal surfaces inside the vents, and that moisture feeds the exact things you don’t want circulating through your house. Our technicians see it in Kendall and Coral Gables the same way we see it in Hialeah: humid air moves through the return, cools, and leaves behind a film that builds up over years, not months.
Air Quality & Sanitizing Cost Breakdown (2026)
Here’s what Miami homeowners can expect to pay in 2026, based on the scope of work and the size of the property:
| Service | Typical Miami Price Range | What It Includes |
|---|---|---|
| Whole-home air quality inspection & testing | $195 – $395 | Visual duct inspection, humidity reading, particulate sampling, written findings |
| Duct sanitizing (up to 10 vents) | $275 – $425 | EPA-registered antimicrobial fogging of supply and return ducts |
| Duct sanitizing (11 – 20 vents) | $350 – $550 | Same treatment, larger distribution, longer fog time |
| Full air quality & sanitizing package (up to 2,000 sq ft) | $425 – $650 | Complete duct cleaning, sanitizing fog, coil treatment, and filter replacement |
| Full package (2,000 – 3,500 sq ft) | $550 – $795 | Everything above plus longer run time and additional sanitizing solution volume |
| Whole-home UV or HEPA filtration add-on | $250 – $650 installed | Honeywell or Aprilaire media filter cabinet; UV lamp where applicable |
| Odor treatment (smoke, pet, cooking) | $150 – $350 add-on | Targeted sanitizing fog plus optional charcoal media refresh |
Those are the honest numbers. A three-bedroom ranch in Westchester with eleven vents and one air handler should land right around $450 to $550 for a full sanitizing treatment. A two-story home in Pinecrest with two AC units and eighteen vents will likely fall between $650 and $800. We write the exact price down before we start, so there’s no door-step revision.
Homes with a single HVAC system are cheaper to treat than homes with two. Duct layout matters too: Miami’s older mid-century homes often have tight attic clearances and shorter runs, which is actually faster to sanitize than newer builds with long flex-duct spreads. And if the coil hasn’t been cleaned in years, that adds time and product, because you can’t sanitize effectively around a coil caked with eight years of dust and biofilm.
What Affects Air Quality & Sanitizing Pricing in Miami
No two air quality jobs price out the same, but the variables are consistent. Here’s what moves the number:
- Square footage and vent count. More vents mean more fogging time and more sanitizing solution. A 1,200-square-foot condo in Brickell has six to eight vents. A 3,000-square-foot home in Coral Gables can have 18 to 22. That difference alone can move the price by $150 to $300.
- Number of HVAC systems. Two air handlers means twice the coil treatment and twice the duct runs. Miami homes built before 1980 often have one unit retrofitted; newer homes in Doral and Kendall frequently run two separate systems. Each additional unit typically adds $125 to $200.
- Condition of the ducts and coil. If the coil looks like a felt blanket, sanitizing takes longer and uses more product. Our techs use Rotobrush rotary brush systems to dislodge the debris at the duct wall, then Nikro negative-pressure units pull contaminants out while Abatement Technologies HEPA filtration keeps loosened particles from re-entering the living space. That’s a slower process than fogging alone, and it’s the difference between a $325 job and a $600 job.
- Mold or moisture findings. Miami’s humidity means mold spores are always present in the air column. If testing confirms active mold growth inside the ducts or on the coil, the sanitizing protocol changes. The EPA-registered antimicrobial we fog has to dwell longer, and sometimes a second pass is required. That can add $100 to $250 to the final cost.
- Odor severity. Pet odor, tobacco residue, and cooking grease bond to the duct walls and the filter media. Sanitizing alone won’t always pull those compounds out; a charcoal or carbon media refresh adds another layer, typically $75 to $150 depending on how many filters the home uses.
- Access difficulty. Florida attics in August are brutal, and some Miami homes have furnace closets in tight interior spaces. If the air handler is in a cramped utility closet rather than a garage or attic, expect the job to take an extra 30 to 45 minutes. We don’t surcharge for that, but it does affect how long the job takes, which matters if you’re comparing estimates by what’s included rather than just the bottom line.
How the Sanitizing Process Works (and Why It’s More Than a Spray Bottle)
The phrase “air quality sanitizing” gets thrown around a lot, so let’s be plain about what it actually involves. When we sanitize a home’s air system in Miami, we’re not just walking around with a can of disinfectant spray. The work happens at the duct level, where the air you breathe is actually conditioned.
We start with negative-air extraction, which is the trade term for hooking a large vacuum unit to the duct system so that anything knocked loose gets pulled out of the house rather than blown into it. The Nikro unit sits at the main trunk while a HEPA-filtered Abatement Technologies scrubber runs in the room. Then the Rotobrush rotary brush agitation works the duct walls, dislodging the dust, dander, and biofilm that plain suction can’t pull. Once the mechanical cleaning is done, the sanitizing fog goes in. That fog is an EPA-registered antimicrobial that treats the interior surfaces of the ducts and the coil. The final step is a filter replacement with a Honeywell, Aprilaire, or Guardsman media depending on what the system calls for.
That’s the whole sequence. It’s mechanical removal first, sanitizing second. Anyone offering “sanitizing” without cleaning first is putting product on top of dirt. That’s a waste of money in a humid city like Miami, because the underlying layer becomes a substrate for regrowth within weeks.
What the 365-Day Done Right Promise Covers
Every job we do in Miami runs under the Kingswell Guarantee, which means four things, all in writing. First, you get a written price before any work begins. That price doesn’t change at the door. Second, you get a defined arrival window, and our techs show up in it. Third, the job site is left cleaner than we found it. Fourth, the work itself carries the 365-Day Done Right Promise: if the sanitizing fails within a year, we return and make it right at no charge.
What counts as a failure? Visible mold regrowth in treated ducts, a return of the specific odor we were hired to eliminate, or a documented air quality issue traced to the treated system. To invoke the promise, you call us, describe the issue, and we schedule the return visit. There’s no arbitration, no claim form, no runaround. The Kingswell Way values code governs every visit: say the price, show up in the window we gave, leave the place cleaner, put the guarantee in writing, come back if it fails. That fifth part, the return visit, is what separates a written guarantee from a marketing slogan.
How to Save on Air Quality & Sanitizing in Miami
Sanitizing is an investment in the air your family breathes every day, but there are legitimate ways to keep the cost down without cutting corners:
- Bundle sanitizing with a full home duct cleaning. The sanitizing fog works best on clean surfaces. If the ducts are still loaded with dust, you’re paying for product that can’t reach the duct wall. A combined cleaning-and-sanitizing appointment costs less than doing them separately six months apart.
- Replace or upgrade your filter at the same time. A quality Honeywell or Aprilaire media filter traps more particulate between visits, which means the sanitizing effect lasts longer. The filter itself is $35 to $90 depending on MERV rating, and it protects the investment you just made in the ducts.
- Address moisture issues at the source. If your AC condensate line is backing up or the drain pan is overflowing, sanitizing is a temporary fix at best. Fix the moisture first, then sanitize. It’ll last longer, and you won’t be paying for a second treatment in eight months.
- Schedule in the shoulder season. Miami doesn’t really have a slow season for HVAC, but there’s a real difference between calling in July when every unit in Dade County is running full blast and calling in November or February, when scheduling is more flexible and our techs can spend more time on the job without rushing to the next emergency call.
- Ask for a written estimate before committing. Our Air Quality & Sanitizing in Miami estimates are always free, and the figure we write down is the figure you pay. If you’re comparing quotes, ask each company what’s included in the sanitizing package: is it fog only, or mechanical cleaning first? Is the filter included? Is the coil treated? The cheapest number on a phone call is often not the cheapest number on the invoice.
If you want a firm number for your specific home, call (850) 779-9240. We’ll ask about square footage, vent count, and what’s going on with your air, and we’ll give you a written price you can hold us to.
FAQs – Air Quality & Sanitizing Cost
How much does air duct sanitizing cost in Miami?
Air duct sanitizing in Miami runs $275 to $550 for most homes, depending on vent count and the size of the system. A home with up to 10 vents typically costs $275 to $425, while homes with 11 to 20 vents land between $350 and $550. The price includes the EPA-registered antimicrobial fog and the labor to run it through the full duct system. For an exact price on your home, call (850) 779-9240 and we’ll give you a written estimate free.
Is air quality testing worth the cost in Miami?
Air quality testing in Miami costs $195 to $395 when done as a standalone service, and it’s worth the money if you’re dealing with persistent allergies, unexplained odors, or visible dust buildup around the vents. Testing tells you what you’re actually dealing with: mold spores, dust mites, pet dander, or just a filter that hasn’t been changed in two years. Without testing, you’re guessing, and guessing usually means paying for the wrong fix.
How often should I sanitize my air ducts in Miami’s climate?
In Miami’s humid climate, most homes benefit from duct sanitizing every two to three years, though homes with pets, smokers, or residents with respiratory conditions may want annual treatment. The humidity accelerates biological growth inside the ducts, so the interval is shorter than in drier climates like Phoenix or Las Vegas. A good indicator it’s time: you can see dust at the vent registers even after you’ve just dusted, or the house smells musty when the AC kicks on.
Is it cheaper to sanitize or replace the ducts?
Sanitizing costs $275 to $795 for a typical Miami home, while duct replacement runs $3,000 to $7,000 depending on the size of the house and how much drywall has to be opened up. Sanitizing is almost always the cheaper first step, and it’s often all that’s needed if the ducts are structurally sound. Replacement only makes sense if the ducts are physically deteriorated: crushed runs, separated joints, or holes that let attic air into the system.
Can you come today for air quality sanitizing?
We answer calls with a live person 24/7, and in many Miami neighborhoods we can schedule sanitizing within one to three business days, with same-day slots available during certain times of year. Call (850) 779-9240 and tell us what’s going on with your air. We’ll check the schedule and give you a real answer, not a voicemail queue.
Get a Written Price Before You Decide
If you’ve read this far, you probably want a number you can actually work with. Here’s how to get one: call (850) 779-9240, tell us the square footage, the number of vents, and what you’re experiencing. We’ll give you a written price over the phone or by email before we ever send a technician to your door. That price includes the Kingswell Guarantee, the 365-Day Done Right Promise, and the background-checked, uniformed techs who do the work with Rotobrush, Nikro, and Abatement Technologies equipment. No door-step revisions, no gone-after-the-invoice disappearances. Just the price, in writing, before the work starts.
Written by Dale Whitmore, Owner at Kestrel Air Duct Miami, serving Miami since 2004 under the Kingswell Guarantee.
Pricing reflects the Miami market as of 2026. Kestrel Air Duct Miami offers free estimates – call (850) 779-9240.
What Our Customers Say
"Straightforward and fair. They didn't try to upsell me on a bunch of add ons like the last company that quoted me. Just did the ducts and the dryer vent and left."
- Devon Pratt"Set up an appointment for the whole house plus the dryer line. They called the morning of to confirm, showed up in the window, and showed me pictures of the gunk they pulled out. Worth it."
- Terrence Boyd"Booked them because our old HVAC guy mentioned the ducts were filthy. Quote on the phone matched the invoice to the dollar. Polite crew, laid down mats, in and out in about two hours."
- Hannah Kim