What should I do if I buy a facade and the property is not allowed to install an exhaust fan?

You can discuss with the property. The use of a small exhaust fan is about 20-30W, which is very quiet and will not disturb others.

This small ventilator can be installed on the window glass, but rubber strip should be installed to avoid big vibration and noise.

You can also install a touch switch, which can delay 20-30 minutes. If you press it, you don't have to worry about it. It will automatically turn off when the time comes. This switch is insulated.

Please don't touch the delay switch, which is non-isolated. There is water in the bathroom, which will get an electric shock and be dangerous. Touch the delay switch. We use the CAHOP brand, and the quality is very good. We've been at home for five years and it hasn't broken down. The manufacturer is Zhongshan Switching Appliance.