Called out for fallen duct work. Duct work weren’t supported properly and believe cats have got into it. Found failed indoor air uv light from another company, System has 20x29x1 dynamic electronic filters and replaced last filter they had. Gave homeowner information on ordering more so they will be here when we come to service. Checked refrigerant pressures, temperatures, air flow, zone, air purification upgrades and electronic components, Drain and pump have been flushed .