1, ventilation shaft is used for ventilation and exhaust of the whole building. Once there is a problem with the wall, it is easy to have a scene of bad smell, and even in your own home, you can smell the smell of other people's toilets, which is really unacceptable.
2. Usually, an upper exhaust fan is installed in the ventilation shaft, which can exhaust the odor to the atmosphere well. However, because the ventilation shaft of the exhaust pipe in the bathroom needs to maintain negative pressure and the bedroom needs to maintain positive pressure, once the exhaust fan fails, there will be odor.
3. Many owners' kitchens and bathrooms face the ventilation shaft, and the noise at home will be amplified through the ventilation shaft. Cooking on the fourth floor, 1 the owner of the building can hear it at home, and the noise is quite loud.