Performed 1 system diagnostic for no heat for the main unit. Found heat strip kit burned and electrical wiring loose in the cabinet, failed run cap, dirty blower, whip and disconnect will need to be replace. Unit is 12 years old. Due to age of system and systems being out of warranty recommend replacement instead of repair. Upstairs unit is the same age. Could consider replacing both to get under warranty. Based on our findings today, it might be time to think about getting a brand new system.