Manufacturer Lennox Model # 14ACXS036 - 230A22 Serial # 1918J06205 Completed two preventative maintenance first system was operating properly customer changed 16x25x1 filter. Performed a amperage readings on blower motor and condenser fan motor both are operating properly. Cleared drain line system is ready for the summer. Trane Model # 4TTR6036B1000AA Serial # 132440HF5F The second unit was going off on low pressure. I charged the system with two pounds of 4-10A and the system was running properly the split temperature was 18 customer changed 16x25x1 filter. Capacitor is rusted but operating properly at this point. Both systems are ready for the summer!