Upstairs Bosch unit: delta T of 33F. Suction line temp 140F with an outdoor ambient of 62F. Indoor 63F. Heat kit working. Checked aux pan for water. Brushed out drain trap. Tested aux pan switch and SS2. System is functioning normally Downstairs Bosch: 10 ppm CO, 11% O2. Filter will need to be changed. Burners are clean. Inspected blower and inducer. Gas valve falls to 0 ppm on shutdown. Tested condensate pump. System set to 40 degree lockout for back up heat. System is functioning normally.