DCM2: AC complete, replaced (2) 16x25x1 filters. Upstairs system is fully functional and operating within manufacturer specifications at this time. Refrigerant pressures and temperatures are appropriate for indoor and outdoor weather conditions. Furnace is 2002 however blower is clean AC is 2019. Main floor/ basement system is operational however blower wheel and evaporator coils are both dirty. Heat exchangers are starting to rust and furnace is from 2002 all warranties have expired on furnace AC and coils is 2017. Spoke with homeowner about options and she decided to have comfort advisor come out Wednesday 10-11am.