Performed 2 system heating diagnostics. Upstairs: 2013 Trane system had a failed condenser fan motor and a bad contactor. With the homeowners permission I replaced the motor and contactor. The system was operating at the end of service call. I checked the capacitor and refrigerant pressures (good). The blower motor, compressor were operating. The system had raised the upstairs by 10 degrees when I left. The strip heat was operating properly (21 amps). I emailed estimate for new pan safety switch (flood protection). The drain line had good slope. The condenser fan motor and compressor were pulling proper amount of amps. I replaced the air filter for the customer is using his air filter. Mainfloor: sysyem is from 1994 Rheem unit. system had a melted wire going to the compressor on the AC. system. AC system runs on r22 refrigerant which is obsolete. The heat exchangers were rusted by the burner box and appear to be compromised(see pictures). The igniter was bad (I ohmed it out/OL). Th