Came out for a two system inspection. Found that both systems haven’t been maintenance for over three years. Both systems has dirty, evaporator coils, as well as dirty blower motors. We found out both systems had completely impacted filters causing airflow issues. This explains why the blower wheel and evaporator coils are dirty. We found that the upstairs system did not have TE flood protection, this can lead to catastrophic ceiling damage. We also found that the drain line upstairs is on the verge of clogging, and this will cause water to back up into the drain pan and possible overflow. The downstairs unit is servicing apart of the upstairs and part of the basement. The customer wants to have that unit service other areas in the basement. We will need to install one return duct and two supply ducts to heat and cool the basement. We checked both outdoor units and they were working according to specifications. These units are r410a systems that are both 2021. The Systems are mechanica