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Home » Ideas » Home improvement » Preventing and Cleaning Black Mould in Air Conditioner: Tips to Know

Preventing and Cleaning Black Mould in Air Conditioner: Tips to Know

Addressing the black mould issue in air conditioners
Happy JastaBy Happy JastaMarch 5, 2024Updated:March 13, 20244 Mins Read
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Air conditioners are common in every household and they are directly related to indoor air quality of the house, which makes their maintenance essential. Regular health checkup and maintenance of the air conditioning unit helps prevent the accumulation of airborne dust and dirt leading to the breeding of mould in it.

The growth of black mould in the air conditioner can happen when the unit goes unattended for several months. Once the mould has accumulated, with the air circulated by the AC, it can cause various mild and severe health risks while also leading to reduced efficiency and structural damage to the unit. It becomes imperative then to carry out preventive and fixing methods to avoid the set in of black mould and cleanup the air conditioner if the mould has made its way into it.

Spotting Black Mould Growth

The first signs of your air conditioner gathering mould and mildew may not necessarily be visual. A musty odor in the room, where the wall or window AC sits, is the primary signal of mould presence. When you notice the first sign (through foul odor or visually) get to checking the AC coils, filters, ducts, vents, AC drain line and even the apparent signs of black mould breeding on the exterior. Mould thrives in moist and humid environment, so, AC is a perfect condition for it to grow. If you spot black or greenish-black growth outside or within the air conditioner, immediate action may be required.  

Cleaning Black Mould Buildup

When you have discovered mould growth in your air conditioner, spring into action right away. Your effort must start at getting ready to clean it thoroughly, but before you get your hands dirty, make sure you have turned off the unit. Wear protective gear such as gloves, goggles and a mask for safety against dirt and mould.

Now when you are all prepared; take the AC unit apart for cleaning. If you’re not sure of how to unscrew the grille, top and back cabinet housing, and filter, you can refer to the owner’s manual of the AC or seek professional assistance. If you’re DIYing, you can use a solution of water and vinegar or a commercial mold cleaner to scrub away the visible mold growth. A small brush can be used to access and clean hard-to-reach spots. When you have thoroughly cleaned the mould, you should rinse the surface well with water. Be extra sure of not dripping wires in water. Now, allow the air conditioning unit to dry completely before reinstalling the unit and starting it again.

Also Read: How to Choose the Right Air Conditioner

Preventing Black Mould Regrowth

We can’t stress enough on the fact that regular maintenance and cleanliness are the key to preventing the buildup of black mould in air conditioning units. Routinely servicing the air conditioner can help reduce the risk of mould growth, which would involve cleaning or replacing the air filters every one to three months, depending on the frequency of use. Additionally, an annual check-up must be carried out to inspect and clean the coils and drainage system.

When the AC is not regularly used, periodic check-up is necessary before usage. This may include visual inspection of the exterior and a necessary check of the airflow. Proper airflow is the first defense against mould buildup so keep an eye on your air conditioner’s drainage system. A clean air route will help prevent water accumulation, which serves as a breeding ground for the mould spores.

Indoor humidity has been seen as a major contributor to mould buildup. As a prevention option, ensure adequate ventilation in bathrooms and kitchens which are areas prone to moisture. You can also include a dehumidifier alongside your air conditioning unit. This will assist in maintaining optimal humidity levels – ideally between 30 percent and 50 percent, so as to ensure the air conditioner is not overly humid and is lesser prone to mould set in.

Final Word

There should be no delay in addressing the black mould in air conditioner as it can mar the health of your indoor air. You can follow the abovementioned steps and incorporate preventative measures to keep your air conditioning unit mould free and working efficiently throughout the year.

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Happy Jasta
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Happy is a detail-oriented content writer who has been exploring topics like furniture design, smart home technology, camper trailers, and home décor for over seven years. He is a native of the Himalayas and a graduate of Himachal Pradesh University. Beyond writing, he enjoys web research, SEO, and Instagram marketing. When not writing, you can cross him on a hike or find him immersed in Pahari music.

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