Mold and Duct Cleaning

Indoor Air Quality Professionals

Can air ducts become

contaminated with mold?

Yes. Air duct systems can become

contaminated with mold. Duct systems

may be constructed of bare sheet metal,

sheet metal with fibrous glass insulation

on the exterior, or sheet metal with an

internal fibrous glass liner, or they may

be made entirely of fibrous glass. Bare

sheet metal systems and sheet metal

with exterior fibrous glass insulation can

be cleaned and disinfected. If water

damaged, ductwork made of sheet metal

with an internal fibrous glass liner or

made entirely of fibrous glass will often

need to be removed and discarded.

Ductwork in difficult-to-reach locations

may have to be abandoned. Our remediation services Include full duct cleaning services.


Call: 877-932-7177

 for duct cleaning services in

VA, MD and DC


How to Prevent Duct Contamination

Whether or not you decide to have the air ducts in your home cleaned, committing to a good preventive maintenance program is essential to minimize duct contamination.

To prevent dirt from entering the system:

To prevent ducts from becoming wet:

Moisture should not be present in ducts. Controlling moisture is the most effective way to prevent biological growth in air ducts.

Moisture can enter the duct system through leaks or if the system has been improperly installed or serviced. Research suggests that condensation (which occurs when a surface temperature is lower than the dew point temperature of the surrounding air) on or near cooling coils of air conditioning units is a major factor in moisture contamination of the system. The presence of condensation or high relative humidity is an important indicator of the potential for mold growth on any type of duct. Controlling moisture can often be difficult and if you suspect a problem you should contact a professional to analyze the condition.

Indoor Air Quality USA is a website for Acquired Home Services Inc.

Phone: 877-932-7177   /   Email:

Fax: 703-754-1216

Use the highest efficiency air filter recommended by the manufacturer of your heating and cooling system.

Change filters regularly.

If your filters become clogged, change them more frequently.

Be sure you do not have any missing filters and that air cannot bypass filters through gaps around the filter holder.

When having your heating and cooling system maintained or checked for other reasons, be sure to ask the service provider to clean cooling coils and drain pans.

During construction or renovation work that produces dust in your home, seal off supply and return registers and do not operate the heating and cooling system until after cleaning up the dust.

Remove dust and vacuum your home regularly. (Use a high efficiency vacuum (HEPA) cleaner or the highest efficiency filter bags your vacuum cleaner can take. Vacuuming can increase the amount of dust in the air during and after vacuuming as well as in your ducts).

If your heating system includes in-duct humidification equipment, be sure to operate and maintain the humidifier strictly as recommended by the manufacturer.