Understanding Mold

Molds are part of the natural environment. Molds are fungi that can be found anywhere – inside or outside – throughout the year. About 1,000 species of mold can be found in the United States, with more than 100,000 known species worldwide.

When excessive moisture or water accumulates indoors, mold growth often will occur, particularly if the moisture problem remains uncorrected. While it is impossible to eliminate all molds and mold spores, controlling moisture can control indoor mold growth.  Molds are usually not a problem unless mold spores land on a damp spot and begin growing. They digest whatever they land on in order to survive. There are molds that grow on wood, paper, carpet, foods and insulation, while other molds feed on the everyday dust and dirt.

Since mold requires water to grow, it is important to investigate the source of the moisture to prevent mold growth.

Hazards of Mold in Your Ductwork

Ventilation systems are designed to distribute a recirculate air within a home.  If mold growth is within the ventilation system, or near an air intake, mold spores can be spread throughout a home.

“Toxic mold syndrome” remains controversial and unproven, but experts agree that it’s best to limit exposure to molds.  The most likely adverse reaction to mold is a respiratory allergic reaction in mold-sensitive people. These reactions are similar to other respiratory allergies, causing sneezing, watery eyes, nasal discharge and congestion.

Cleaning Air Ducts

Consider having the air ducts in your home cleaned if there visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system.

There are several important points to understand concerning mold detection in heating and cooling systems:

• Many sections of your heating and cooling system may not be accessible for a visible inspection, so ask the service provider to show you any mold they say exists.
• You should be aware that although a substance may look like mold, a positive determination of whether it is mold or not can be made only by an expert and may require laboratory analysis for final confirmation.
• If you have insulated air ducts and the insulation gets wet or moldy it cannot be effectively cleaned and should be removed and replaced.
• If the conditions causing the mold growth in the first place are not corrected, mold growth will recur.

What makes Humid Climates Uncomfortable?

Humid climates have a high amount of water vapor in the air.  When it’s hot, high humidity makes people feel hotter because it reduces the ability to evaporate moisture from the skin.  In humid climates, becoming comfortable means going into a conditioned space.

Potential for Mold Growth

While mold spores are in every region and every climate, mold growth is highly dependent on the amount of humidity.  Mold growth typically occurs when an environment reaches a relative humidity of 60 percent or greater in a 72 hour span.  If mold is found within your home or workplace remediate the problem immediately, mold spores can be distributed throughout the home or building through the HVAC system impacting indoor air quality.

Air Conditioning in Humid Climates

Air conditioning coils serve a very important role in regulating temperature and humidity in humid climates.  As air passes through the evaporative coil of the air conditioner, heat and moisture are removed from the air.  To a degree, the lower the humidity level, the more comfortable you will feel at a given temperature.

Air Duct Cleaning and HVAC Maintenance

Overtime foreign debris is drawn into the evaporative coils and fan blower of the air conditioning system, gradually decreasing air flow and energy efficiency.  Maintaining HVAC system, will keep your cooling and heating components operation at peak energy efficiency, and prevent potential indoor air quality problems.  Yearly air conditioner inspections and routine air duct cleaning with assure maximum efficiency.

Ductworks, Inc. and National Jewish Health Featured On FOX 31 / KDVR: Martino TV

Consumer advocate Tom Martino featured the Family Air Kit®, an allergen and mold Test Kit,  developed by National Jewish Health that tests for substances that can cause allergic and asthmatic reactions.

Tom Martino and  Paula Haddock interviewed Jeffery Nathanson, the Executive Director of Business Development and Eddy Frisk, of Ductworks, Inc. to discuss the benefits of the Family Air Kit®

The Family Air Kit® is a cost effective and accurate means of testing the indoor air quality of your home or business.   The Family Air Kit® tests the longitudinal effect of dust in the home.

Ductworks, Inc. and National Jewish Health provide a comprehensive approach to controlling symptoms for people who suffer from allergies and asthma.

Ask Your HVAC Maintenance Technician

The next time you have your heating or air conditioning unit maintained, ask the technicians opinion about your air duct cleaning needs. Since they are not trying to sell you their cleaning services you will likely get an honest answer.

Inspect Your Air Ducts

Inspecting the condition of the air ducts is relatively simple.  The best place to inspect the condition of the air ducts is at the trunk line.  The trunk line is the large rectangular air duct attached to the furnace, extending overhead across the basement area.  Locate a vent register on the trunk line, and remove it with a screw driver.  Look inside the trunk line with a flashlight and mirror, or take a snapshot with a digital camera.  The trunk line is the central part of the heating and cooing system and will be the best indicator of the systems cleanliness.

1. Potential health effects and symptoms associated with mold exposures include allergic reactions, asthma, and other respiratory complaints.
2. There is no practical way to eliminate all mold and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.
3. If mold is a problem in your home or school, you must clean up the mold and eliminate sources of moisture.
4. Fix the source of the water problem or leak to prevent mold growth.
5. Reduce indoor humidity (to 30-60% ) to decrease mold growth by: venting bathrooms, dryers, and other moisture-generating sources to the outside; using air conditioners and de-humidifiers; increasing ventilation; and using exhaust fans whenever cooking, dishwashing, and cleaning.
6. Clean and dry any damp or wet building materials and furnishings within 24-48 hours to prevent mold growth.
7. Clean mold off hard surfaces with water and detergent, and dry completely. Absorbent materials such as ceiling tiles, that are moldy, may need to be replaced.
8. Prevent condensation: Reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.
9. In areas where there is a perpetual moisture problem, do not install carpeting (i.e., by drinking fountains, by classroom sinks, or on concrete floors with leaks or frequent condensation).
10. Molds can be found almost anywhere; they can grow on virtually any substance, providing moisture is present. There are molds that can grow on wood, paper, carpet, and foods.

Source: EPA