Getting Rid Of Air Conditioner Mold

Mold thrives in damp conditions and often goes unnoticed until it becomes a significant problem. Mold in your air conditioner is a common household issue that not only decreases your HVAC system’s efficiency, but can also have harmful effects on your health.

In this blog post, we’ll help you identify the signs of air conditioner mold growth, as well as provide effective methods for getting rid of it and preventing future occurrences.

By maintaining proper care of your AC unit and being vigilant with these preventative steps, you can enjoy clean air at home while prolonging the life of your cooling system.

Identifying AC mold

To identify air conditioner mold, look for signs of musty odors and visible growth on surfaces such as the evaporator coil and inside air ducts; if you or anyone in your household is experiencing symptoms like sneezing, coughing, or wheezing while indoors that disappear when outside the home.

Need a professional? Contact Anderson Air for the best HVAC services.

Signs of mold growth

Mold in AC units can be quite subtle, making it difficult for homeowners to notice until it has become a major issue. One of the initial signs that mold is growing in your air conditioner is a musty or unpleasant odor coming from the unit when turned on.

Additionally, you might observe dark spots or fuzzy patches on visible parts of your air conditioning system, such as vents, filters, or even surrounding walls and ceilings.

These could indicate the presence of mold colonies developing within hard-to-reach areas like ductwork and coils. If left untreated, these infestations can result in decreased efficiency of your cooling system and pose potential health risks to occupants relying on clean indoor air.

Health risks

Exposure to air conditioner mold can pose serious health risks for you and your family. Mold spores, when inhaled, can cause respiratory problems such as coughing, wheezing, and difficulty breathing.

It can also worsen asthma symptoms and trigger allergies. In severe cases, it may even lead to infections or long-term lung damage. This is why it’s important to identify and remove any mold growth in your AC unit as soon as possible.

How to remove mold in AC units

To remove air conditioner mold, you can clean surfaces with a bleach solution or distilled white vinegar, replace or clean air filters, and hire a professional for severe cases.

Clean surfaces with bleach or distilled water solution

To effectively get rid of AC mold, it’s important to clean the surfaces with a mixture of bleach solution or distilled white vinegar. These two household cleaners are powerful enough to kill spores and stop them from coming back.

Bleach is particularly effective as it can penetrate tough stains caused by mildew and grime that grow in damp environments such as an air conditioning unit. Simply mix three parts water and one part bleach in a spray bottle, then apply it to the area using a cloth or sponge.

Distilled white vinegar also has natural antimicrobial properties that help eradicate mold growth on surfaces.

Regular cleaning of your air conditioning unit with these solutions will go far in preventing future occurrences; however, if you notice severe cases where there is extensive mold in your AC system or ductwork, it’s best to consider hiring professional services for remediation and thorough cleaning ensuring indoor quality for better health outcomes.

Replace or clean air filters

To prevent mold growth in your air conditioner is to regularly replace or clean the air filters. Dirty, clogged filters can trap moisture and debris, encouraging mold spores to grow.

In addition to promoting cleaner indoor air quality, replacing your air filter every 1-3 months can significantly reduce the risk of mold buildup. If you use a reusable filter, be sure to follow manufacturer instructions for proper cleaning and maintenance.

Hire a professional for severe cases

If you notice severe mold growth in your air conditioner or experience persistent health problems, contact a professional. They have specialized equipment and techniques for removing mold safely and effectively.

A professional can also identify any underlying issues with your AC unit that may be contributing to mold growth, such as leaks or inadequate ventilation.

Preventing mold in your air conditioner 

To prevent mold growth, it’s important to regularly clean and maintain your unit, control humidity levels, use mold-resistant materials when possible, and ensure proper ventilation.

Regular cleaning and maintenance

To prevent mold growth in your air conditioner, it’s important to stick to a regular cleaning and maintenance schedule.

This includes regularly wiping down surfaces with a bleach solution or distilled white vinegar, replacing or cleaning air filters regularly, and scheduling professional duct cleaning.

Control humidity levels

Controlling humidity levels is an important aspect of preventing AC mold. Humidity produces the perfect environment for mildew and mold to grow, so it’s essential to keep moisture under control.

The indoor humidity levels should fall between 30 and 50 percent. You can monitor this with a hygrometer, which measures the moisture in the air.

If your home is humid, there are several steps you can take to lower them. For instance, using a dehumidifier can help remove excess moisture from the air and maintain comfortable humidity levels within your home.

Use mold-resistant materials

Another effective way to prevent air conditioner mold is by using mold-resistant materials. When purchasing a new air conditioning unit or renovating your home, look for materials that are specifically designed to resist mold growth, such as antimicrobial coatings and treated fabrics.

For example, some HVAC filters are infused with silver ions which can help inhibit the growth of bacteria and other harmful microorganisms.

Proper ventilation

Proper ventilation is the best way to mold growth in your air conditioning unit. Without adequate airflow, moisture gets trapped inside, creating a breeding ground for mold and mildew.

To ensure proper ventilation, keep the vents and registers clear of obstructions, such as furniture or drapes.


While mold is a common problem many homeowners face, if left untreated, it could potentially  lead to health issues and structural damage. But don’t worry, getting rid of it is easier than you think! By identifying the signs of mold growth and taking action promptly you can prevent future mold buildup and enjoy clean and healthy air conditioning in your home.

Take preventative measures such as controlling humidity levels and using mold-resistant materials. Don’t hesitate to call an HVAC professional if you need assistance.