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Protect Your Home from Black Mold on AC Coils

Mold can be a serious problem in any home, especially when it grows on air conditioning (AC) coils. Black mold is the most dangerous type of mold and if left untreated, it can lead to costly damage and health issues for homeowners. It’s important to identify black mold growth early so that proper measures are taken as soon as possible. We will discuss what black mold is, the causes of black mold on AC coils, the signs of black mold on AC coils, prevention tips, and what mold removal services are available in the Orlando Florida area for your AC-based mold issues.

Table of Contents:

What is Black Mold?

Black mold is a type of fungus that can grow in damp, dark places. It is usually black or greenish-black and has a musty odor. The most common types of black mold are Stachybotrys chartarum (also known as “toxic black mold”) and Aspergillus niger. Black mold can cause health problems if it is inhaled or ingested, so it’s important to be aware of its presence in your home.

Definition of Black Mold

Black mold is an umbrella term for several species of fungi that thrive in moist environments with little light and air circulation. These molds produce toxins called mycotoxins which can cause adverse health effects when exposed to humans and your dog, cat or any other pet that shares your home over long periods of time.

Types of Black Mold

The two most common types of black mold are Stachybotrys chartarum (also known as “toxic black mold”) and Aspergillus niger. Both have the potential to cause serious health issues if left unchecked, but S. chartarum tends to be more toxic than A. niger due to its production of higher levels mycotoxins like trichothecenes and atranones which can lead to respiratory illnesses such as asthma or bronchitis when inhaled over long periods time..

Health Effects Of Black Mold

Exposure to high concentrations of these mycotoxins may result in symptoms such as coughing, sneezing, headaches, nausea, skin irritation, eye irritation, fatigue and even neurological disorders depending on the individual’s sensitivity level towards them. In extreme cases where large amounts have been ingested or breathed in for extended periods, there may also be an increased risk for cancer development. Therefore it is important to not only identify any signs early on but also take necessary steps immediately upon discovery.

Black mold can be a serious health hazard if not addressed properly, so it is important to understand what black mold is and how it can affect your home. Knowing the causes of black mold on AC coils can help you take the necessary steps to prevent and remediate any issues with your air conditioner unit.

Causes of Black Mold on AC Coils

Moisture Buildup and Standing Water

Moisture buildup and standing water are the most common causes of black mold growth on air conditioner coils. This can occur when condensation builds up inside the unit due to inadequate ventilation or insulation, or if there are any leaks in the system. If left alone, this moisture can create an ideal environment for mold spores to thrive and spread throughout your home.

Poor Ventilation and Insulation Around the Unit

Poor ventilation and insulation around your air conditioner unit can also lead to black mold growth on its coils. Without proper airflow,  warm air from outside will be drawn into your AC unit and cause condensation to form inside it. Additionally, insufficient insulation will allow cold drafts from outside to enter your home which could result in a temperature difference between indoors and outdoors that encourages mold growth.

Leaking pipes or roofs near your AC unit may also contribute to black mold growth on its coils, as they provide additional sources of moisture for it. Even small amounts of water dripping onto the unit can encourage mold spores to grow quickly, since they need only a tiny amount of water vapor in order to survive and reproduce rapidly within a short period of time.

Mold growth on AC coils is caused by moisture buildup, poor ventilation and insulation, or leaking pipes nearby. To identify black mold on your air conditioner unit, look for visible discoloration of the coils, musty odors coming from the unit, and allergy symptoms after using it. You can also have the same issues with your car, if it’s infested.

Signs of Black Mold on AC Coils

Visible Discoloration on the Coils

One of the most obvious signs of black mold growth on air conditioner coils is visible discoloration. The coil itself may be a dark green or black color, and there may also be patches of white or yellowish-green fuzz growing on it. If you notice any discoloration, it’s important to take action right away as this could indicate that your AC unit has been contaminated with mold spores.

Musty Odor Coming from the Unit

Another sign that your AC unit may be infested with black mold is a musty odor coming from the unit. This smell can often be described as “musty” or “damp” and can linger in the air even when no one is using the air conditioner. It would be easy to compare this smell to that of an old, dank attic or basement. If you notice an unpleasant smell coming from your AC unit, it could mean that there are high levels of mold present.

Allergy Symptoms After Using The Air Conditioner

Lastly, if you start experiencing allergy-like symptoms after using your air conditioner such as sneezing, coughing, watery eyes, or headaches then this could indicate that there is black mold present in your system. Mold spores can easily become airborne and cause allergic reactions when inhaled so if you experience any of these symptoms while running your AC  then it would be wise to get it checked out by a professional immediately for proper diagnosis and treatment options.

It’s important to recognize the signs of black mold on AC coils, as it can cause serious health problems. Taking preventative measures and performing regular maintenance are key in avoiding this problem. Let’s now look at how you can take action to prevent and maintain your air conditioner unit from developing black mold.

Prevention and Maintenance Tips for Avoiding Black Mold on AC Coils

Regularly Clean and Replace Filters in Your Air Conditioner Unit

It is important to regularly clean or replace the filters in your air conditioner unit as this helps to reduce the amount of moisture that can build up inside. This will help prevent mold growth on coils, as well as improve the efficiency of your system. To keep your AC running smoothly, it’s recommended that you change out or clean your filter every month during peak usage times such as summer months when you are using it more often.

Ensure Proper Ventilation and Insulation Around the Unit

Having proper ventilation and insulation around an air conditioning unit is key for preventing black mold from growing on its coils. Make sure there is adequate airflow around all sides of the unit so that warm air does not get trapped near it, which can cause condensation buildup leading to mold growth. Make sure any insulation surrounding the unit is properly sealed off so no moisture can seep through into areas where it shouldn’t be at all.

One of the most common causes of black mold on AC coils is due to leaks or moisture buildup in the system. If you notice any water damage in walls or ceilings near where your AC unit is located, then this could be a sign that there may be a leak somewhere causing excess moisture accumulation nearby which could lead to mold growth on its coils over time if left unchecked. Therefore, it is important to inspect these areas periodically for signs of water damage and have them repaired immediately in order to avoid further issues down the line with black mold growth on your AC units coils.

Regular maintenance and preventative measures can help reduce the risk of black mold growth on AC coils, but it’s important to remember that professional water damage restoration and mold services may be necessary for more serious cases. Let’s take a look at the benefits of hiring professionals for this job.

Professional Water Damage Restoration and Mold Remediation Services for AC Coils

Professional water damage restoration and mold remediation services for air conditioner coils can help homeowners protect their homes from further damage and health risks. These services involve a thorough inspection of the unit, removal of any affected materials, and a professional cleaning to restore the system back to its original state.

Benefits of Professional Services

Professional water damage restoration and mold abatement services provide several benefits over DIY solutions. Professionals have access to specialized equipment that is not available to most homeowners, such as HEPA filters, vacuums, and ozone generators to remove airborne contaminants. Additionally, professionals will be able to identify potential sources of moisture or other problems that may lead to future mold growth.

Steps Involved in Professional Services

The steps involved in professional water damage restoration and mold remediation services typically include an initial assessment by certified technicians who will inspect the area for signs of contamination or structural damage caused by water intrusion. If black mold is found on AC coils, they will then use specialized tools such as HEPA filters to remove it safely without spreading spores into other areas of your home. Afterward, all affected materials must be removed before disinfecting with EPA-approved products designed specifically for this purpose. Finally, new insulation and drywall may need to be installed depending on the extent of the problem before sealing off any remaining openings.

FAQs in Relation to Black Mold on Ac Coils

Is black mold from the AC toxic?

Black mold can be toxic, depending on the type of mold present. The most common type of black mold found in air conditioning systems is Stachybotrys chartarum, which produces toxins that can cause serious health problems when inhaled or ingested. It is important to have a professional inspect and test for any potential black mold growth before attempting to clean it up yourself. If you suspect your AC system has been contaminated with black mold, contact a certified water damage restoration and mold remediation contractor in Orlando, Florida right away for proper assessment and removal.

What kills mold on AC coils?

Mold on AC coils can be killed with a combination of mechanical cleaning and chemical treatments. Mechanical cleaning involves using brushes, vacuums, or air compressors to remove the mold from the surface of the coil. Chemical treatments involve using an EPA-registered antimicrobial product specifically designed for use on HVAC systems. This product is applied directly to the coil and allowed to sit for several minutes before being wiped away. The treatment should be repeated every few months in order to keep mold growth at bay.

What do I do if my AC has black mold?

If you have discovered black mold in your air conditioning system, it is important to take immediate action. The first step is to turn off the AC unit and contact a professional water damage restoration and mold removal contractor. These experts can assess the extent of the problem, determine what caused it, and provide advice on how best to address it. They may also be able to help with repairs or replacement of any damaged components. It is important that all affected areas are properly cleaned and treated so that the mold does not return. If done correctly, this will ensure your home remains safe from further contamination or health risks associated with black mold growth.

Can you get sick from a moldy air conditioner?

Yes, it is possible to get sick from a moldy air conditioner. Mold spores can be released into the air when an AC unit is running and spores can cause respiratory issues such as coughing, sneezing, watery eyes and even asthma attacks in some cases. It is important to have any mold growth on or around your AC unit professionally removed by a qualified contractor as soon as possible to avoid health risks associated with exposure. Additionally, regular maintenance of your AC system should be done annually to prevent future mold growth.


It is important to take proactive steps in preventing black mold on AC coils. Regular maintenance and cleaning of the coils, as well as proper ventilation, can help reduce the risk of mold growth. If you have noticed signs of black mold on your AC coils or suspect that there may be a problem, it is best to contact a professional water damage restoration and mold remediation contractor right away. A professional can assess the situation and provide you with an effective solution for removing any existing black mold from your AC coils.

Are you dealing with black mold on your air conditioning coils in Orlando, Florida? Damage Control 911 is the leading water damage restoration and mold remediation contractor in the area. We have years of experience helping customers restore their homes after a flood or other disaster. Our team can quickly assess the situation, provide an estimate for services needed, and perform all necessary work to remove black mold from AC coils safely and effectively. Contact us today so we can get started on restoring your home!


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