Performed inspection on 2 systems: I left additional air filters. I used mighty pump on drain lines. I tested both system and checked for proper operations. I checked the refrigerant pressures and all starting components on the outdoor units. Findings: Upstairs system: I found that the blower wheel was impacted with dirt and is causing the unit not to move as much air as recommended by the manufacturer. I found that the system had a very large amount of black biological growth all inside the hvac system. The evaporator coil was also slightly dirty and had biological growth on it as well. The biological growths needs to be sprayed with a cleaning agent and a double UV light is recommended to prevent the biological growth from spreading throughout the home and causing potential health issues. The system also needs updated flood protection. Mainfloor system: The mainfloor systems blower wheel was also impacted with dirty which reduces the amount of air flow that the unit moves thro