You will need: socket head "13", screwdrivers with a flat and cross-shaped blade, pliers.
Note:
The manufacturer recommends replacing the cabin filter every 15,000 km or every year (whichever comes first). Under severe operating conditions, it is regulated to check the filter every 3 months or 6 thousand km of run and replace the filter every 6 months or 12 thousand km.
Replacing the cabin filter on the Nissan Qashqai J10
1. Remove the pedal assembly (see Removing and installing the pedal assembly).

2. Turn out 2 bolts of fastening of the electric drive of management of a gate.
NOTE:

This is how the damper control motor mounting bolts are located.

3. Move the drive away from the work area.

4. Remove the cover.

5. Remove the old Nissan Qashqai filter and replace it with a new one.

6. Install the filter and removed parts in the reverse order of removal.
Source: http://nissan-qashqai.dv13.ru/sistema-otopleniya-kondicionirovaniya-i-ventilyacii-salona/zamena-filtra-postupayushhego-v-salon-vozduxa/