Do you need a water tray outside the air conditioner?

Need. For the air conditioner installed upstairs, it is necessary to install a water tray for the outdoor unit of the air conditioner, because the outdoor unit of the air conditioner will produce a lot of water vapor during use, which will eventually condense into water. If the water tray is not installed, the water will flow downwards and leak downstairs, which will bring a lot of inconvenience to people and easily lead to disputes between neighbors.