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Mold & Moisture After a Storm · Mobile, AL

Mold and Moisture After a Storm: Dehumidification and Duct Cleaning for Water-Damaged Homes

A Gulf Coast house that took water has about 48 to 72 hours before mold starts, and the clock runs faster in September heat with the power out. Our indoor air quality team sets up drying, cleans and seals the ductwork the water reached, and installs the whole-home dehumidification and filtration that keeps the house healthy after the remediation crew leaves. Mobile and Baldwin County.

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The 72-Hour Window

Why Drying Has to Start Before the Adjuster Arrives

Mold does not wait for the claim. Wet drywall, carpet pad, cabinet bases and the insulation around the air handler start growing within two to three days at Mobile humidity, and once it is in the ductwork the system spreads it to every room each time the blower runs. Policies require you to prevent further damage, so drying is not just allowed before the adjuster comes, it is expected; photograph everything first and keep the receipts.

Drying a house without power is the Gulf Coast problem. Opening the windows helps only when the outdoor air is drier than the inside, which in late summer is rarely before dawn. A generator running a dehumidifier and a few air movers does more in a day than open windows do in a week. We help you set that up, and we tell you when the AC can safely take over the job.

If you see downed lines, smell burning or hear buzzing, stay away, keep people and pets clear, and call 911 or the power company first. Then call us.

Call (251) 680-7500
Professional Systems technician cleaning a supply duct with a rotary brush and vacuum after flooding in Mobile, AL
What We Do

Indoor Air Quality Services for Storm-Damaged Homes

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Moisture assessment

Humidity and moisture readings room by room and inside the duct system, so the drying plan targets what is actually wet instead of the whole house.

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Temporary dehumidification and air scrubbing

Commercial dehumidifiers and HEPA air scrubbers set up and sized for the space while the structure dries, run from utility or generator power.

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Duct cleaning and sanitizing

Sheet-metal ducts the water reached are cleaned with rotary brushes and negative-air vacuum, then sanitized. Flex duct and duct board that got wet are replaced; they cannot be cleaned.

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Duct sealing

Joints that separated when ducts floated or were crushed are re-sealed, so the system is not pulling crawlspace air into the house for the next ten years.

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Whole-home dehumidifier

A ducted dehumidifier on the air handler holds the house at 45 to 50 percent humidity year-round, which is what keeps mold from coming back after the drying is done.

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Filtration and UV

Media filtration and a UV light at the coil for a system that has been through a flood, so what the blower moves is clean.

How It Goes

From Wet House to Dry Air

1

Call and describe the water

How much, where, whether the air handler and ducts got wet, and whether the house has power. We bring the right equipment.

2

Assess and set up drying

Moisture readings, drying equipment placed and sized, and a plan for what runs on the generator if the power is out.

3

HVAC check before the AC runs

The air handler, coil and ducts inspected so the system is not spreading spores. A wet air handler is dried or replaced first.

4

Clean, seal, replace

Metal ducts cleaned and sanitized, wet flex duct and duct board replaced, joints sealed.

5

Keep it dry

Whole-home dehumidifier, filtration and UV installed so the house holds at a safe humidity after the remediation crew leaves.

House took water? Call before the 72 hours are up.

Drying equipment, a safe-to-run check on the AC, and duct cleaning where the water reached, coordinated with your remediation crew.

Run the AC or Not?

The Question Every Flooded Household Asks

The air conditioner is the best dehumidifier in the house, which is why the instinct is to run it the moment power returns. If the air handler and the ducts stayed dry, do it: set it a few degrees lower than normal and let it pull moisture. If the air handler took water, or the ducts flooded, running it pushes wet, spore-laden air through every room and shorts the board on the way. That system gets inspected and dried, or replaced, before the thermostat is touched.

When in doubt, call. A technician can tell you in an hour whether the system is safe to run, and if it is not, temporary dehumidification carries the house until it is. The musty smell at the vents after a storm is not something a new filter fixes; it is the sign the ducts need cleaning.

Drying Without Power

How to Dry a House When the Grid Is Still Down

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Run the dehumidifier on the generator

A portable generator through a proper inlet runs a commercial dehumidifier and two air movers all day. That is the highest-value load in the house until the power returns.

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Get the wet material out

Carpet pad, soaked drywall below the waterline, wet insulation and cardboard. Drying equipment cannot keep up with a room full of wet material.

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Open up only when the outside air is drier

Early morning on a dry day, yes; a humid afternoon, no. Opening the house to 80 percent outdoor humidity adds water to the walls.

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Keep the AC off until it is checked

If the air handler or ducts got wet, running the system spreads it. If they stayed dry, the AC becomes the best drying tool you own the moment power returns.

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Photograph and write it down

Dates, readings, what was removed and what was run. The claim needs it, and so does the remediation crew when they arrive.

Professional Systems technician installing a whole-home dehumidifier on an air handler after storm water damage in Mobile, AL
After the Remediation Crew Leaves

Keeping a Gulf Coast House Dry for Good

Remediation companies dry the structure and leave. What they do not do is change the fact that a Mobile home sits in 70 to 80 percent outdoor humidity for eight months a year, with an air conditioner that often short-cycles and leaves the air damp. That is why mold comes back a year after the storm in houses that were dried properly.

A whole-home dehumidifier on the air handler, a sealed duct system and real filtration are the fix, and the weeks after a storm, when the walls are open and the ductwork is already being worked on, are the cheapest time to add them. We work alongside your remediation and rebuilding contractors so the drying, the HVAC repair and the air-quality work happen in the right order.

Reviews

What Gulf Coast Homeowners Say After the Storm

★★★★★

"A storm came through and messed up the electric in our house. We got a quote quickly and they got us up and running fast! The guys did a great job and even helped us save money."

— Devan H., Google review
★★★★★

"Came home late afternoon to find my power off. I called after hours and Robby was over in 15 min. It was a bad circuit breaker. From the time I saw I had no power til the time I had power back on was around 30 min. Amazing. Super nice guys as well."

— Gary S., Google review
★★★★★

"They diagnosed a power issue that other companies weren't able to. The technician was extremely knowledgeable and professional, and explained everything very well. Also, I called them at 8 at night and got a human being on the phone!"

— Laura B., Google review

Read More Reviews

Questions & Answers

Mold and Moisture After a Storm: Questions

How fast does mold start after a flood?

At Gulf Coast humidity, about 48 to 72 hours on wet drywall, carpet pad and insulation, faster in summer heat with no power. Drying has to start before the adjuster comes; photograph everything first and keep receipts for the equipment and the fuel.

Should I run the AC after the house flooded?

If the air handler and ducts stayed dry, yes; it is the best dehumidifier you own. If the air handler or ducts got wet, no, until they have been inspected and dried or replaced. Running a wet system spreads spores through the house and damages the equipment.

Can flooded ductwork be cleaned?

Sheet-metal ducts, yes: cleaned, sanitized and resealed. Flex duct and fiberglass duct board that got wet are replaced; the material holds the moisture and the growth.

What does a musty smell from the vents mean?

Moisture in the ducts, the air handler or the coil, often with growth already started. A filter does not fix it. The system needs to be inspected and the ducts cleaned.

Do I need a whole-home dehumidifier after a storm?

If the house was dried properly it is not required, but it is the single most effective way to keep mold from returning in a Mobile home that lives at 75 percent outdoor humidity. The weeks after a storm are the cheapest time to add one.

Do you do mold remediation?

We handle the HVAC and air-quality side: drying equipment, duct cleaning and sealing, dehumidification, filtration and UV. Structural remediation and mold removal from walls and framing are done by remediation contractors, and we work alongside them.

Something we didn't cover? See our full FAQ page or call (251) 680-7500.

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Related Services

Hurricane & Storm Damage Services

Everything we repair after a storm, electrical and HVAC.

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Indoor Air Quality Services

Dehumidifiers, duct cleaning, filtration and UV for Gulf Coast homes.

Indoor air quality

Flooded or Saltwater-Submerged HVAC

When the air handler or the ducts were under water.

Flooded HVAC

Post-Hurricane HVAC Inspection

Whether the system is safe to run before you turn it on.

HVAC inspection
Storm Response

Wet House, Musty Vents? Get It Dry Before Mold Decides for You.

Moisture assessment, drying equipment, duct cleaning and whole-home dehumidification from Mobile's indoor air quality team, working alongside your remediation crew.

Call (251) 680-7500   Request Storm Service