The external wall of the fresh air system is perforated. Can it be replaced?

Find a professional. It is estimated that reinforcement should be replanted to enhance structural stability. Some people say it doesn't matter whether I play or not. The problem is that if many people play, the structure of the whole building will be affected.

2. At present, the fresh air system can be installed without holes. Many of them are non-destructive. It is a direct industrial ffu+ fresh air kit. Because of the mobility of the wind, it is only a matter of time to purify the whole house. It is easy to use and safe.

It is actually very dangerous to install central fresh air system in family residential quarters, punch holes in beams and load-bearing external walls. Because of the property, developers may have to bear security risks. It is still recommended to negotiate with the property, because there are relevant provisions in the general agreement, and the external wall of the building belongs to the owner. Try to play in an inconspicuous place, don't come out too much, and install it on the wall; If negotiation fails, you can try to install the machine in the bathroom, where you can use the air outlet, the air inlet can be placed on the window of the bathroom, and the air outlet is connected to the air duct of the bathroom; Another method is to install it on the balcony and punch holes in the glass.