Based on our findings today, it might be time to think about getting a brand new system. Performed 1 system diagnostic for whole home unit. Unit is low on R22. Previous company replaced plenums nd evap coil only, found dirty blower, dirty filter, failed run capacitor Recommendations and low on R22 charge. Due to type of refrigerant would need to replace coil condenser. Custimer requested install supervisor for qoute.