Air conditioners have become a necessity during the sweltering summer heat. However, improper usage, especially the common habit of turning off the AC immediately after use, not only reduces its cooling efficiency but also creates an environment conducive to mold growth inside the unit. This can result in an unpleasant odor and pose potential health risks.
According to Dr. Ōtani Yoshio, a Japanese respiratory specialist and author of “Throat Care: Healthy Throat, Strong Immunity,” mold and dust inside air conditioners can be dispersed into the air in the form of spores. Prolonged inhalation of these spores can cause irritation, coughing, allergies, and even respiratory issues. This is why many people experience discomfort or coughing when turning on the AC at the start of the season.
On a technology forum, a user asked, “How can I prevent my air conditioner from getting moldy?” and shared their concern about the automatic air-blowing function not always working after turning off the unit, leading to potential mold issues over time.
The post garnered significant attention from the community. Many members shared their insights on proper AC usage, such as switching to fan mode for 5-10 minutes before turning it off completely, or running the fan continuously for 2-3 days at the end of the season to dry out the evaporator coils and prevent mold buildup.
The fan mode plays a crucial role in preventing mold in air conditioners. By turning on the fan after switching off the cooling function, you dry out the evaporator coils, preventing moisture buildup, which is the primary cause of mold and bacterial growth. This simple step helps mitigate unpleasant odors and reduces the dispersion of harmful agents when the AC is turned on again.
A popular tip shared by many users is to run the fan mode continuously for 1-3 days before discontinuing AC usage for an extended period, especially at the end of summer. This ensures that the entire system is thoroughly dried out.
Several users attested that by following this method, their air conditioners, including brands such as National, Hitachi, and Fujitsu, have remained mold-free and functional even after more than a decade of use.
Additionally, experts recommend regular professional cleaning of the air conditioner every 2-3 years and suggest using a dehumidifier to maintain indoor humidity below 50%, creating an ideal environment to inhibit mold and bacterial growth.
However, most users acknowledge that mold in air conditioners is challenging to avoid without regular cleaning. Therefore, to protect your family’s health and ensure optimal cooling performance, it is imperative to prioritize proper AC maintenance and cleaning.
