Renewed 2 Comfort Club Membership plans and completed 2 heating preventative maintenance checks. Checked the safety and operations. Found the upstairs furnace 25-years-old operating at this time but in poor condition due to its age and worn parts. The system was dirty and had a badly rusted heat exchanger. Found the downstairs 16-year-old Trane heating system operating with a worn motor and a dirty blower assembly. The flue pipe was not up to code. Both systems' water safety was not up to code.