Based on our findings today, it might be time to think about getting a brand new system. Today we performed two system home care. Flushed and treated drain lines, replaced all filters, cleaned fuel rails and flame sensors. Inspected all electrical components and connections took amp draws on all motors. Inspected all heat exchangers with digital camera found failed heat exchanger on main level tagged furnace unsafe and showed client findings. Ac units use r22 refrigerant that is obsolete and has been mandated by the federal government. All equipment is 20 years old and needs to be updated scheduled install supervisor to give options on updating. Left all equipment operational second level furnace could fail at anytime.