next step, you can learn how to dismantle the fan blower and clean it.
check the cabin filter and clean the fan blower is only a fracton from airocnd servicing.
aircond minor service : flush old oil & gas can refill new gas & oil, replace receiver drier and expansion valve
aircond full service service : including the minor service, open dashboard to take out cooling coil, inspect and clean cooling coil, aircond filter, fan blower etc.
will know much more when i visit azbi centre, right now referring from @cheelam aircond thread, azbi centre fb & experience from previos repair @ autohaus kl.
pic below is how the aircond works :

for more info, checkout @cheelam aircond thread, azbi centre fb, refer to their posts & videos to understand more.
from my understanding, through my experiences as noob car owners, many not aware of car aircond service because of perception of car still new , aircond still cold so aircond still ok, and also some mechanic say to them, no need to service, got problem only come. Until one day their aircond is not in good condition, then only they will come ask why their aircond is not working.
Really good info, man! Thanks for sharing.
Do you have an estimated price quote for the minor and full service for our Saga?