Most of these add-on bidets can be easily installed according to the instructions, which will take you only 15 minutes. However, for some with hot water connections, you should ask a plumber for help. In addition, for those that run on electricity, you need to design an additional power source in the bathroom to help the bidet work. This will be an important part of the preparation, because the bathroom is very wet, so if you do not do this part carefully it will be very dangerous.