Performed spring maintenance on 10 units. 5 RTU’s, 1 mini split, 4 split systems. Rtu 1-4 have low condenser fan motor capacitors. I have quoted to repair House 1 has low dual capacitor for compressor House 4 has pitted contactor in condenser. I have submitted replacement referrals for split systems on house 1&4. I recommend replacement because of age and units run on phased out r-22 refrigerant Rtu #2: system is low on r22 due to possible refrigerant leak. Adding r22 refrigerant will be necessary for the unit to run properly (also adding leak seal, AC renew and dye should be added with missing refrigerant). System has a burnt contactor that should be replaced, outdoor unit has an old hard start kit that is old and needs to be replaced to help start the compressor. The compressor in the unit was pulling close to its maximum allowable amps and compressor may fail in the near future. Tech also found a failing due capacitor that should be replaced (per manufactures recommendations).