What Does It Really Cost to Treat Mold in Your HVAC? (And How to Avoid the Scams)
In the Charleston, SC area we treat HVAC mold at a flat $50 per vent, posted right here.
How much does it cost to treat mold in your HVAC?
In the Charleston, SC area we treat HVAC mold at a flat $50 per vent, posted right here. A typical 10 to 15 vent home runs $500 to $750, with a $399 minimum. Conventional HVAC mold removal is priced at $2,000 to $10,000 nationally. The per-vent fix comes first.
Marine veteran owned · EPA-registered antimicrobial · Flat $50 per vent · $399 minimum · 12-month guarantee · No upsell
The honest answer depends on what the job actually is. Plain duct cleaning, per-vent antimicrobial treatment, and full structural remediation are three different scopes sold under similar names, and that is exactly how the price ranges get so wide. Here is the whole picture in one table, with Greg’s real number at the top.
| Job | Price | What it is |
|---|---|---|
| Bactronix per-vent treatment | $50 per vent | Clean and antimicrobial-treat the whole system, per supply vent. Our price, on this page. |
| Typical 10 to 15 vent home | $500 to $750 | The usual whole-system Bactronix ticket, treated and guaranteed. |
| Standard duct cleaning | $25 to $50 per vent (about $389 whole job) | Dust removal only, no antimicrobial treatment. National estimate, Charleston SC area. |
| Conventional HVAC-system mold removal | $2,000 to $10,000 | Mold removal inside the HVAC system, the band most companies quote. National estimate, Charleston SC area. |
| Whole-home mold remediation | $1,200 to $3,750+ | Tear-out and containment for structural mold. National estimate, Charleston SC area. |
Scope note: the $2,000 to $10,000 figure is for mold removal in an HVAC system, not plain duct cleaning. Standard per-vent duct cleaning runs $25 to $50 per vent and about $389 for the whole job nationally. We keep those scopes separate so you are never quoted a remediation price for a treatment job. Sources: HomeGuide 2026, This Old House 2026, Angi 2026.
Flat $50 Per Vent
12-Month Guarantee
EPA-Registered Product
Marine-Owned
See your exact price in 30 seconds.
Enter your vent count. No email wall, no callback to get a quote.
Why are the quotes so different, from $99 to $20,000?
Homeowners tell the same story over and over. One company says ninety-nine dollars. The next says six hundred. A mold remediation company quotes twenty thousand. Same house, wildly different numbers (real homeowner quotes, AnandTech and r/FirstTimeHomeBuyer threads).
Nobody has to be lying for that to happen. They are pricing different jobs and not telling you which one. A $99 special is usually a quick dust vacuum that skips sanitation entirely. A $20,000 quote is full structural remediation with tear-out and containment, which is real work for advanced structural mold, but it is not what a musty vent needs on day one. Our $50-per-vent antimicrobial treatment sits deliberately in the middle: clean the system, treat the source, before the mold ever earns a five-figure quote.
What are the common duct-cleaning scams to watch for?
There are three you will see again and again, flagged by Angi and Today’s Homeowner (Angi 2026; Today’s Homeowner 2026):
- The coupon that balloons. A too-cheap headline price ($89, sometimes less) that turns into several hundred dollars once the tech is in your attic and “finds a problem.”
- The fake before-and-after. Stock photos of black, filthy ducts shown as if they came from your house, to justify an upsell. The image is not your system.
- The on-the-spot mold scare. A salesperson points a flashlight, declares dangerous mold, and quotes thousands while standing in your hallway, with no testing.
One local review captures the result: “I paid this company a lot of money to clean my ducts and remove the mold around the vents. They did not remove any mold. Total rip off” (BBB Charleston, 1-star, 2024). That is the experience we are built against.
Count your vents, multiply by $50, and that is the number.
Why do you charge a flat $50 per vent with the price on the page?
The single biggest fear in the reviews is bait-and-switch, and a posted flat price is the antidote. Count your vents, multiply by $50, and that is the number. A flat rate carries no commission, so no one has a reason to inflate it. A typical 10 to 15 vent home is $500 to $750, treated and guaranteed for 12 months.
There is no coupon that balloons here and no attic “finding” waiting to double the ticket. You see the exact math on this page before you ever pick up the phone, and the vent count is verified at your door before work starts.
What is included in the $399 minimum job, and what isn’t?
The $399 minimum covers a full system treatment on a smaller home, every supply and return vent, the coil, drain pan, blower, and air handler, cleaned and treated with an EPA-registered antimicrobial, plus the 12-month guarantee. On a larger home you are back to the flat $50 per vent.
It does not include structural mold remediation, drywall tear-out, or crawlspace work. If we open up your system and find advanced structural mold that needs a true remediation, we tell you straight and we do not pretend a treatment will fix it. The dryer-vent add-on is a separate $99 if you want it.
How do I know you’ll treat the mold and not just spray and leave?
Because spraying biocide over dirty ducts is exactly what the EPA cautions against, and it is why other companies’ treatments do not hold (EPA, Should You Have the Air Ducts in Your Home Cleaned). We clean the system first, find the moisture that is feeding the mold, then apply the antimicrobial to its label. If the treated mold returns inside 12 months, we come back and re-treat it at no charge.
Greg Busang was a Marine before he owned this company. The job gets done the way he says it will, or a crew is back out to make it right, and that accountability is the whole reason the price can sit on the page.
Where we treat, and the page that closes it.
We start in our own backyard: Cane Bay, Nexton, Carnes Crossroads, Summerville, Goose Creek, Moncks Corner, plus the wider Charleston Lowcountry.
If the musty smell is what brought you here, the full fix lives on the main page: HVAC mold treatment for $50 a vent. Selling or buying in Cane Bay or Summerville? See mold treatment in Cane Bay and mold treatment in Summerville.
Questions price-shoppers ask us.
Basic Info
How much does it cost to remove mold from air ducts?
In the Charleston, SC area, Bactronix treats mold in your HVAC at a flat $50 per vent, so a typical 10 to 15 vent home runs $500 to $750, with a $399 minimum. Conventional HVAC-system mold removal is priced at $2,000 to $10,000 nationally (HomeGuide 2026; This Old House 2026). The per-vent treatment is the early, affordable option.
Why are the quotes so different, from $99 to $20,000?
Because they are different jobs sold under similar names. A $99 special is usually a dust vacuum that skips sanitation. A four or five figure quote is full structural mold remediation with tear-out and containment. Our $50-per-vent antimicrobial treatment sits in between, cleaning and treating the system before mold spreads into the structure. The price is on the page so you compare like for like.
What are the common duct-cleaning scams to watch for?
The classics are a too-cheap coupon that balloons at the door, fake before-and-after photos, and a salesperson who finds alarming mold and quotes thousands on the spot. Angi and Today’s Homeowner both flag the bait-and-switch pattern (Angi 2026; Today’s Homeowner 2026). Our answer is one flat $50-per-vent price posted here, no coupon bait, no commission upsell.
Service Info
Why do you charge a flat $50 per vent with the price on the page?
Because the single biggest fear in the reviews is bait-and-switch, and a posted flat price kills it. You count your vents, multiply by $50, and that is the number. Greg Busang owns the company and sets that rate himself, and his crews are paid to treat vents, not to sell, so nobody at your door has a commission riding on a bigger ticket. A typical 10 to 15 vent home is $500 to $750, treated and guaranteed for 12 months.
What is included in the $399 minimum job, and what isn’t?
The $399 minimum covers a full system treatment on a smaller home: every supply and return vent, the coil, drain pan, blower, and air handler, cleaned and treated with an EPA-registered antimicrobial, plus the 12-month guarantee. It does not include structural mold remediation, drywall tear-out, or crawlspace work. The dryer-vent add-on is a separate $99 if you want it.
How do I know you’ll treat the mold and not just spray and leave?
Because spraying biocide over dirty ducts is exactly what the EPA cautions against, and it is why other companies’ treatments do not hold. We clean the system first, find the moisture that is feeding the mold, then apply the antimicrobial to its label. If the treated mold returns inside 12 months, we come back and re-treat it at no charge.
Book your treatment.
Pick your slot. The invoice will match the calculator, and nothing is due at booking.
Rather talk it through first? Call 843-282-7777.
Marine veteran owned. EPA-registered products. Flat $50 per vent. $399 minimum. 12-month guarantee. No upsell.