We noticed the musty smell was worse whenever the furnace kicked on. Turned out there was mold growing in a duct section running through the crawl space. The team cleaned it and helped us figure out where the moisture was coming from.
St. Louis, Missouri
HVAC & Air Duct Mold Remediation in St. Louis, MO
Our IICRC-certified crew handles hvac & air duct mold remediation for St. Louis homes and businesses. Same-day response, we bill your insurance, and free estimates.
IICRC certifiedSame-day responseWe bill insuranceFree estimates
Reviews
Rated 4.9 by St. Louis-area neighbors
We had mold after a slow leak under the sink. They inspected it, explained the plan, and left the space dry and clean.
Our home inspection flagged mold. These folks remediated it and gave us the clearance letter we needed to close.
Our process
Our hvac & air duct mold remediation process in St. Louis, MO
Inspect
We inspect ductwork, register boots, and the air handler for visible mold and moisture sources.
Contain
The system is shut down and sealed off from the rest of the home before cleaning begins.
Remove
We clean mold-affected duct surfaces and remove any materials that can't be adequately cleaned.
Dry
We address the moisture source, whether it's condensation, a leak, or poor ventilation.
Verify
We confirm the system is clean before it's put back into regular use.
Certified & trusted
Standards we work to, carriers we bill
Where we work in St. Louis
St. Louis neighborhoods we cover
Wherever you are in St. Louis, our certified crew can inspect, contain, and remove mold, then dry the structure so it does not return.
HillsdaleUniversity CityPine LawnWellstonUplands ParkWebster GrovesMehlvilleKirkwood
What it costs
HVAC & Air Duct Mold Remediation cost in St. Louis, MO
Every job is different, so here are the typical Missouri ranges we see. These are planning numbers, not a quote.
Small area
$500 to $1,500
A single moldy spot, a closet, or under a sink. We contain it, remove it, and treat the surface.
One room
$1,500 to $3,500
A bathroom, kitchen, or bedroom with mold on a wall or ceiling, plus the moisture source fixed.
Basement, attic, or crawl space
$2,000 to $6,000
Larger areas that need more containment and drying. Common here after spring rain or a slow leak.
Whole-house or severe
$10,000 and up
Mold across several rooms or after major water damage. We work in phases, room by room.
We give free estimates, so the surest way to know your number is to call. Want a ballpark first? Try our instant mold remediation cost calculator. Filing a claim? We bill your carrier directly, so see our mold insurance claims guide.
Local knowledge
HVAC & Air Duct Mold Remediation for St. Louis, MO homes
HVAC & Air Duct Mold Remediation in St. Louis tends to start the same way mold does across City of Saint Louis: heavy rain and seasonal flooding pushing water toward foundations and crawl spaces. When that moisture sits for even a day or two, mold takes hold, and that is when homeowners from Hillsdale, University City, Pine Lawn and the rest of St. Louis call us.
We handle hvac & air duct mold remediation for St. Louis the right way. We find and fix the moisture source first, because mold always returns if the water problem is left behind, then we contain the area and remove the mold safely.
Our team is based in Valley Park, about 30 minutes from our Valley Park base, so we can usually reach a St. Louis home the same day. Our methods follow public guidance from the EPA and the CDC on handling indoor mold safely.
St. Louis specifics
What HVAC & Air Duct Mold Remediation in St. Louis really involves
For a home in this area, hvac & air duct mold remediation starts with finding the moisture, because the water is what feeds the mold. If you have noticed a musty smell or a spreading stain in your home, hvac & air duct mold remediation is worth a call before the damp reaches the framing. Our crew has done HVAC & Air Duct Mold Remediation across City of Saint Louis enough to know how plumbing leaks and poor ventilation moves through these homes. What sets HVAC & Air Duct Mold Remediation apart is where it hides: supply vents, the air handler, and duct interiors, exactly where homeowners rarely look.
Around here, hvac & air duct mold remediation tends to settle into supply vents, the air handler, and duct interiors before anyone in the house notices it. Older and newer homes alike need HVAC & Air Duct Mold Remediation, from the newer builds near Pine Lawn to the oldest ones in town. The reason HVAC & Air Duct Mold Remediation comes up so often here is simple: plumbing leaks and poor ventilation, working on local homes month after month. Most HVAC & Air Duct Mold Remediation jobs in the area trace back to heavy rain and seasonal flooding pushing water toward foundations and crawl spaces, a pattern we see week after week.
When we take on HVAC & Air Duct Mold Remediation, the job takes shape this way:
- HEPA vacuum, clean, and treat the surrounding surfaces
- Stop the water source so the problem does not come back
- Remove moldy material to the IICRC S520 standard
- Dry the structure with commercial equipment until readings normalize
- Inspect the affected area and find the moisture feeding the mold
Since we are only about 30 minutes from our Valley Park base, a call for HVAC & Air Duct Mold Remediation rarely waits long.
Good to know
HVAC & Air Duct Mold Remediation in St. Louis, MO: common questions
How do I know if my ductwork has mold?
A musty smell that gets stronger when the HVAC system runs, or visible growth around vent covers, are the most common signs.
Will you fix the moisture causing the mold?
We identify the moisture source, whether it's condensation, a crawl space leak, or humidity issues, and either address it directly or coordinate with an HVAC technician.
Do I need to replace ductwork with mold in it?
It depends on the material and extent of growth. Metal ductwork can often be cleaned, while some flexible or fiberglass-lined duct may need replacement.
Do I need to leave my St. Louis home during the work?
Usually no. We seal the work area under negative air, so most of the St. Louis home stays livable. For larger jobs we will tell you if it is better to step out for a day.
Can I clean duct mold myself?
Ductwork is hard to access safely and cleaning it without proper containment can push spores through the whole house, so it's best left to a professional crew.
Does a humidifier make duct mold more likely?
It can, since evaporative coolers add significant humidity to the air moving through the ductwork, especially if the system isn't well maintained.
Will my insurance cover hvac & air duct mold remediation in St. Louis?
It depends on the cause. When the mold follows a sudden, covered event, there is often coverage. We bill your carrier directly and document the loss so your St. Louis claim moves.
Do you serve St. Louis?
Yes. We cover all of St. Louis, including Hillsdale, University City, Pine Lawn, and the rest of the St. Louis area. We are based in Valley Park, about 30 minutes from our Valley Park base, and answer our own phone around the clock.
More help in St. Louis
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Talk to a certified team now
Need hvac & air duct mold remediation in St. Louis, MO?
Call our 24/7 line and talk to the certified crew directly. Same-day response, we bill your insurance, and free estimates.