In order to eliminate moisture and avoid mold, should the bathroom open or close after bathing?

 8:55am, 22 May 2025

After the bath ends every day, the bathroom is always filled with moisture. In order to effectively eliminate moisture and avoid mold, should the bathroom door be opened or closed?

The correct answer is to close the bathroom door

In fact, the moisture after washing can be quickly discharged outside the bathroom through the air-changing fan, which is faster and more effective than opening the window.

Some people may open the bathroom door while opening the fan in order to achieve faster change. However, this is actually a wrong way, because opening the door will let the moisture enter the room.

Therefore, the best practice should be to keep the bathroom door closed and turn on the air-changing fan.

Opening the bathroom door affects the efficiency of gas exchange

If the bathroom door is kept open, the humidity will flow into the room, which may cause the gas exchange fan to fail to effectively discharge the moisture outside the household.

This will not only allow the moisture in the bathroom to stay longer, but may also spread the moisture to other parts of the room, such as places that are not easy to notice in the interior of the storage cabinet, and moldy situations will occur.

In addition, like the bathroom door, many people will also be surprised whether they should open the window account when changing, thinking that if the air change fan is turned on under the window, it will allow the dry air outside to enter, which will be more efficient.

However, if the air coming from the window is quickly discharged by the air fan, the air flow in other places will become more difficult. Although the windows can dry quickly, the corners of the bathroom still leave moisture.

Overall, the air change after bathing should be performed with both the door and the window closed.

Why do bacteria have health risks?

Bacteria is a fungus that may begin to grow at home within 24 to 48 hours after exposure to water. Fungi are part of nature, but appearing indoors can be a health problem.

Experts point out that bacteria are related to the occurrence of asthma, asthma, difficulty breathing, and upper respiratory tract symptoms such as sneezing, coughing or nasal congestion. However, researchers are still working to understand the full range of health risks that bacteria can cause.

To some people, these symptoms are caused by allergies to the bacteria themselves, but even people who do not have allergies may have health problems.

In addition, experts believe that bacteria exposure is considered to be one of the causes of "sick building syndrome", a phenomenon that people get sick in specific buildings and cannot clearly explain. Symptoms include headache, fever, cold, fatigue, nausea, skin irritation, colds and coughs. This syndrome is characterized by the symptoms worsen when they are inside the building, and the symptoms improve after leaving the building.

What is the best way to remove bacteria?

Experts suggest that the primary task should be to remove visible germs and damp items.

The specific way is to use an electric fan or dehumidifier to reduce the humidity in the space and to discard sterile or dampened carpets and trays because these items are difficult to clean and dry.

In addition, certain items with bacterial growth can be cleaned with cleansers or bleach.

More importantly, you should find out the source of moisture in your home, because if you only remove bacteria and the moisture is still there, the bacteria will grow again.