checked with condo board, they themselves recommended to take second opinion.
the components are all owned by the unit owners.The mgmt mentioned that they facilitate maintenance - the seasonal filter change - as a courtesy for all.
The system itself hasn't had any issues...cools and heats perfect controlled by NEST thermostat (i suppose that doesn't matter)
from the looks, the pan looks bad but everything else can be cleaned perhaps, insulation replaced + suggested epoxy for pan
with one of us out of job..spending 3k is not ideal for our finances as of now