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6 Types Of Mold That Infest Your Duct System

One of the biggest issues homeowners often face when it comes to air quality and the maintenance of their homes is mold growth. Mold is a dangerous organism that is not easily detectable, and that can cause serious harm to people living in a house. The difficulty in detecting mold is due to the fact that they appear in sizes and places difficult to see. And once they have started growing, they spread very quickly and remedying it becomes very difficult.

Mold often grows in wet and dark spaces. In a house that has a room where the temperature is lower than in other temperatures, there are high chances to see mold appear in the lower temperature room. That is why mold growth is more often seen in the cold seasons. That does not mean that you can’t have mold during the summer. Homes with air conditioning systems might also have a mold problem during the summer.

A home with an air conditioner and duct systems often makes it easy for mold to grow and develop in the house. The work of the air conditioner is to provide cool air through a condensation method, making it one of the units that keep the highest levels of moisture for a long time in the house. This moisture level is very favorable to mold growth and makes it very difficult to control.

5 Star Air is a company that aims to provide residents of our city and state with the best air ducts service and guarantee the cleanliness of the air you breathe. That is why we decided to help you handle mold issues more effectively. To do so, we should first start by talking about the various mold types found in your ducts and vents.



Acremonium is a very toxic type of mold that you can find in moist areas of the house. This mold often grows next to humidifiers, coils,  drainpipes and window sealants. They start very little as a tiny moist and grow into powdery airborne elements that can easily travel through the house. Exposing yourself to acremonium is very dangerous. It could cause serious health issues such as immune system disorder and other organ failures. In the worst case, acremonium can cause cancer or brain damage. It is one of the most dangerous types of mold in a house. You can recognize acremonium by its orange color. 



Alternaria is a rapidly spreading mold that, if not treated quickly, can become a burden difficult to control for the homeowner. As with all other molds, it grows in moist and damp places. People often encounter them in bathrooms, next to showers, bathtubs, and places with leaking water. Alternaria is also one of the most common types of mold in buildings – residential and commercial. The health threat they come with is asthma, like diseases and allergies.   



Aureobasidium is a mold species that is found mostly in homes with wallpapers and wooden surfaces. If you look behind your wallpaper and see a mold with a pink, brown or black color, there are chances your home is dealing with an Aureobasidium mold infestation. If an Aureobasidium mold stays for a long time in your home, it will start darkening till it reaches a dark brown color. The symptoms of aureobasidium on human health include eyes, nails and skin infections.



Fusarium is an allergenic and toxigenic mold that grows in homes and buildings that have known water damages. They can grow on practically every material in your home. Therefore, it is usual to find them on carpeting, behind wallpapers and wooden materials. Fusarium mold is pink, white or reddish in color and is also known as the red mold. If exposed to Fusarium, symptoms you will get include sore throat, running nose, sneezing, and itchy eyes. If you do not treat the problem quickly, the mold can cause more serious health issues such as bone infection, nervous system damage, brain abscess and internal hemorrhage.



Among the most dangerous types of mold, Stachybotrys is one that will top the list. This black mold is one of the most toxic types of mold. It is an allergenic mold that can also cause kidney and liver illnesses. Stachybotrys grow on the surface with cellulose such as wood, paper cardboard, wicker and hay. The best way to identify Stachybotrys is by examining the mold’s color. 



This is a rare type of mold that often grows in homes and buildings that have experienced water damage and in air vents. That is why you will commonly see this mold growing in kitchens and bathrooms. The worst thing about Ulocladium is the difficulty of removing them.


All the species of mold listed above are harmful. Some are even extremely dangerous and can cause great harm to your health and that of your family. That is why you should always check your home for mold and contact a mold remedial service to remove any mold you find.

The good news today is that there is a way to prevent mold growth in your home. By performing regular air duct cleaning, you can reduce the amount of mold in your house by more than half. However, you will need to get qualified professionals to perform the duct cleaning service to have it done properly.


5 Star Air – Air Duct Cleaning and Dryer Vent Cleaning Services

One of the main places in your homes where mold builds up is your dryer vents and air ducts. At 5 Star Air, we offer to prevent mold from growing in those areas of your home with our professional air duct and dryer cleaning service. Our team of duct cleaning experts has all the tools and equipment necessary to perform high-quality duct system cleaning services. 

You can hire our experts any day. Our customer service works 24/7, and our customer service representatives are at your service to help you book technicians and answer any questions you may have. 

To have a quote and schedule an appointment with one of our experts, contact us today at (800) 686 50 38 or leave us a message online. You will not have to wait long to improve your indoor air quality.


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