"Called at 9 PM after finding black mold in our basement. They were here the next morning, walked us through everything, and the air smelled fresh again within days."
HVAC and ductwork mold cleaning
HVAC and ductwork mold cleaning in Minneapolis
Mold in your ductwork spreads spores through the whole house. Proper HVAC decontamination in Minneapolis — negative-air, HEPA, safe cleaners.
- 24/7 emergency response
- IICRC certified team
- Licensed & fully insured
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Mold on an AC coil or inside a supply plenum does not stay in the basement. When the blower starts, spores can move through the supply ducts to bedrooms, living rooms, and finished lower levels.
Where HVAC mold starts in Minneapolis homes
We see this most often in forced-air systems in older Minneapolis houses, from 1920s stucco homes in Longfellow to 1950s ramblers near Nokomis. The furnace may be newer, but the duct layout, basement moisture, and add-on parts can still cause trouble.
A backed-up AC drain pan is a common source. If the condensate line plugs with slime or rust, water sits under the evaporator coil and feeds growth on the coil cabinet and insulation. A bypass humidifier can do the same thing if it runs too high all winter. We often find a wet, crusted humidifier pad that should have been changed before heating season.
A dirty coil adds fuel. Dust, pet hair, and cottonwood seed from spring can stick to the wet coil face. Once that layer stays damp, mold has a place to grow and the blower can push odor and spores into the house.
What proper HVAC mold decontamination includes
Real HVAC mold cleaning starts with the source, not with a coupon duct cleaning. We inspect the coil cabinet, supply plenum, return trunk, drain pan, condensate line, humidifier, and the first runs off the plenum. If we see active growth, the system is shut down before cleaning starts.
The work area around the furnace or air handler is contained, then put under negative air with HEPA filtration. Registers are controlled so debris is not blown into rooms on Lake Street, Johnson Street, or anywhere else we are working. We use HEPA vacuuming on accessible duct surfaces, the blower compartment, plenum, and return areas.
The evaporator coil and drain pan are cleaned with products made for HVAC equipment. If a biocide is needed, it must be EPA-registered and labeled for that use. Humidifier pads are replaced, drain lines are cleared, and we verify that water leaves the pan before the system goes back on.
Why a basic duct cleaner can miss the mold problem
A duct-cleaning truck can remove loose dust. That is not the same as mold remediation inside an HVAC system. If the company brushes ducts and sprays a fragrance while the coil is still dirty, the wet source is still there. The odor may fade for a week, then come back when the AC runs.
Be careful with anyone who sells mold work without containment around the equipment, negative air, HEPA vacuuming, and coil access. Spinning brushes can shake growth loose inside lined ductboard, old flex duct, or a return chase that uses wall cavities. Without control, that material can move into bedrooms and the main floor.
Good work has a clear order. Find the moisture source, protect the house, clean the contaminated HVAC parts, treat only where the label allows, replace bad pads or insulation, then run the system and check airflow and drainage. That is the difference with hvac mold cleaning minneapolis homeowners should expect.
Our Process
How we remove mold safely, in 4 steps
No guesswork. No upsells. A clear, certified process from first call to final clearance test.
1. Call or Request Quote
Tell us what you're seeing. We respond in 15 minutes or less, 24/7.
2. Free On-Site Inspection
A certified technician inspects, tests, and identifies the source.
3. Containment & Removal
We seal off the area, remove contaminated materials, and HEPA scrub the air.
4. Clearance & Warranty
Final air test confirms safe air quality. Workmanship warranty included.
Real Minneapolis Jobs
Before & after
Local homes, real results. Every job documented with photos, lab reports, and clearance testing.
Basement drywall, South Minneapolis
Heavy mold removed and surface restored after spring flooding.
Attic sheathing, Edina
Ventilation issue corrected, sheathing treated and sealed.
5-Star Reviews
Trusted across the Twin Cities
4.9from 380+ local homeowners
"Honest pricing and no scare tactics. Other companies wanted $8k, these guys did the job properly for less than half that and showed me the lab results."
"We had attic mold from an old roof leak. The team handled insurance paperwork and the workmanship warranty gave us real peace of mind selling the house."
Service Area
Serving Minneapolis & the Twin Cities Metro
Locally owned. Same-day response across the metro, no out-of-state subcontractors, ever.
FAQ
Common questions, straight answers
Can mold in my furnace ducts spread through the whole house?+
Yes. If growth is in the supply plenum, blower cabinet, or on the AC coil, the blower can move spores to every room tied to that system. We see this in Minneapolis homes with one furnace serving both main-floor bedrooms and finished basements.
Why does my house smell musty when the AC turns on?+
A dirty evaporator coil, wet drain pan, or plugged condensate line can cause that smell. In spring and summer, cottonwood seed and dust stick to the damp coil, then mold grows in the coil cabinet. Cleaning the ducts alone will not fix that source.
Is duct cleaning enough if I have mold in my HVAC system?+
Usually no. Duct cleaning may remove loose dust, but HVAC mold decontamination also addresses the coil, drain pan, blower area, humidifier pad, and plenum. It should include containment, negative air, HEPA vacuuming, and an EPA-registered biocide when the label fits the job.
Can my whole-house humidifier cause mold in the ducts?+
Yes. Bypass humidifiers can add too much moisture if they are left high during a Minneapolis winter, mainly when outdoor temps drop below zero. A clogged or old humidifier pad can also stay wet and feed growth near the supply plenum.
Not sure where to start? Most homeowners book a mold inspection first, then move into full mold remediation once we know the scope. Want prices first? See Minneapolis mold removal cost. Specialty scopes like crawl space mold removal are common in older homes. Neighborhood pages like East Richfield, Richfield mold removal walk through what we see block by block. Suburb work starts with Minneapolis homeowners.
Browse the site
Everything we cover for Minneapolis homeowners
Pricing by job type, neighborhood-specific pages, and specialty scopes. Pick what looks like your situation.
Pricing
2026 Minneapolis mold pricing guides
Neighborhoods
Minneapolis neighborhood mold removal
- Nokomis
- Northeast Minneapolis
- Powderhorn
- Linden Hills
- Camden
- Uptown
- Kenwood
- Longfellow
- Whittier
- Loring Park
- Marcy-Holmes
- Como
- Prospect Park
- Seward
- Cedar-Riverside
- Bryn Mawr
- Fulton
- Kingfield
- Standish-Ericsson
- Windom
- Highland Park, St. Paul
- Mac-Groveland, St. Paul
- Como (St. Paul), St. Paul
- Morningside, Edina
- Country Club, Edina
- Cahill, Edina
- Elmwood, St. Louis Park
- Fern Hill, St. Louis Park
- Browndale, St. Louis Park
- East Richfield, Richfield
- West Richfield, Richfield
- Central Richfield, Richfield
- East Bloomington, Bloomington
- West Bloomington, Bloomington
- Oxboro, Bloomington
- The Preserve, Eden Prairie
- Hidden Ponds, Eden Prairie
- Bearpath, Eden Prairie
- Glen Lake, Minnetonka
- Groveland, Minnetonka
- Burwell, Minnetonka
- Bass Lake, Plymouth
- Parkers Lake, Plymouth
- Medicine Lake, Plymouth
- Arbor Lakes, Maple Grove
- Rush Creek, Maple Grove
- Weaver Lake, Maple Grove
- Cedar Grove, Eagan
- Lexington-Diffley, Eagan
- Central Park, Eagan
- Heart of the City, Burnsville
- Sunset Pond, Burnsville
- Southcross, Burnsville
- Powers Lake, Woodbury
- Wedgewood, Woodbury
- Stonemill Farms, Woodbury
- Central Park, Roseville
- Owasso, Roseville
- Langton Lake, Roseville
Specialty jobs
Specialty mold services in Minneapolis
Mold won't wait. Neither do we.
Call now for a free inspection. A certified Minneapolis technician will be at your door, often the same day.