Performed 3 system a/c repair and preventative maintenance. No water safety for basement system. Recommend installing a wet switch on the floor to turn a/c off if water is detected. Neither of the new a/c units have a compressor saver kit. Recommend installing compressor saver hard start kit to prolong the life of the compressor and quiet unit noise during start up. No form of power protection. Recommend installing whole home surge protector to keep electrical components from damage. All three systems are operating properly at this time.