HVAC Biofilm: What Is It and How to Remove It

Any blockage in your HVAC will result in poor air distribution throughout your home. When this happens, your rooms will have unequal cooling. It can also force your HVAC system to use more energy to cool your living spaces.

Biofilm is a contaminant that forms inside the HVAC system, causing air blockage. It specifically infests the evaporator coils and condenser pan. If left unattended, it can pollute your indoor air and cause respiratory issues.

In this post, local AC repair specialist Mechanical Technologies shares more information about HVAC biofilm and how to deal with it.

How Does Biofilm Form?

Biofilm can grow in the shaded and wet areas inside HVAC units. This means your HVAC’s protective casing, chassis, condensate pans, evaporator coils, and fans can be contaminated with biofilm. Unfortunately, HVAC systems cannot be completely dry due to the evaporating and condensing processes that allow them to cool spaces. 

To address this issue, manufacturers now apply antimicrobial coating on their HVAC components. However, biofilm colonies can become resistant to this coating over time. That’s why regular HVAC cleaning must be done to prevent these contaminants from spreading.

How Do I Remove Biofilm?

Detergents can be used to remove biofilm. Make sure to hire an air conditioner service provider since they use detergent with fungistatic or bacteriostatic features and pressurized water to force the biofilm colonies out. They also use EPA-approved antimicrobial chemicals to add a protective coating to your HVAC system and eliminate any microbes.

In severe cases, HVAC specialists will use corrosive chemicals to remove the stubborn biofilm that’s already at its dispersal stage. This stage is the most dangerous because they produce spores that could affect your indoor air quality. Unfortunately, corrosive chemicals used to remove biofilm can also degrade the aluminum coils in your HVAC unit. Make sure to discuss the pros and cons with your contractor.

Have your unit regularly maintained and cleaned to prevent biofilm growth in your HVAC system. Mechanical Technologies has the expertise to provide you with quality HVAC cleaning and air duct cleaning services. Call us at (915) 544-1550 or fill out this contact form for a free consultation.