Questions about Zymbo Silent inverter air conditioner (without outdoor unit) for up to 25m2

Has an inlet and an outlet at the back. So yes, you have to drill 2 holes in the wall behind the appliance to the outside.

This cannot be said exactly, as it depends on several factors, including the outside temperature, the insulation of the room, the thermal load (e.g. solar radiation, electronic devices), etc. Usually, modern air conditioning systems like this one can reduce the temperature to around 16-18° C.

You can select a service partner when placing your order.

Unfortunately, spare parts cannot be obtained from us, you must contact the manufacturer directly.

A hole is necessary so that the air can be transported to the outside. See operating instructions: https://www.kk-klimaanlagen.com/media/pdf/13/b0/6e/Silent.pdf